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Spicer ® TIMS<br />

(Tire Inflation and Monitor System)<br />

for Trailers<br />

<strong>Installation</strong> <strong>Guide</strong><br />

AXIG-0025<br />

October 2007


Warnings and Cautions<br />

Warnings and Cautions<br />

The descriptions and specifications contained in this service<br />

publication are current at the time of printing.<br />

<strong>Dana</strong> <strong>Corporation</strong> reserves the right to discontinue or modify<br />

its models and/or procedures and to change specifications at<br />

any time without notice.<br />

Any reference to brand name in this publication is made as an<br />

example of the types of tools and materials recommended for<br />

use and should not be considered an endorsement. Equivalents<br />

may be used.<br />

IMPORTANT NOTICE<br />

This symbol is used throughout this<br />

manual to call attention to procedures<br />

where carelessness or failure to follow<br />

specific instructions may result in<br />

personal injury and/or component<br />

damage.<br />

Departure from the instructions, choice<br />

of tools, materials and recommended<br />

parts mentioned in this publication<br />

may jeopardize the personal safety<br />

of the service technician or vehicle<br />

operator.<br />

WARNING: Failure to follow indicated<br />

procedures creates a high risk of personal<br />

injury to the servicing technician.<br />

CAUTION: Failure to follow indicated<br />

procedures may cause component<br />

damage or malfunction.<br />

IMPORTANT: Highly recommended<br />

procedures for proper service of this unit.<br />

Note: Additional service information not<br />

covered in the service procedures.<br />

Tip: Helpful removal and installation<br />

procedures to aid in the service of this unit.<br />

Always use genuine Spicer replacement parts.<br />

This device complies with part 15 of the FCC rules and with<br />

RSS-210 of Industry Canada. Operation is subject to the following<br />

conditions: (1) This device may not cause harmful<br />

interference, and (2) this device must accept any interference<br />

received, including interference that may cause undesired<br />

operation.<br />

Every effort has been made to ensure the accuracy of all information<br />

in this guide. However, <strong>Dana</strong> Commercial Vehicle<br />

Systems Division makes no expressed or implied warranty<br />

or representation based on the enclosed information.<br />

Any errors or omissions may be reported to:<br />

Marketing Services<br />

<strong>Dana</strong> Commercial Vehicle Systems Division<br />

P.O. Box 321<br />

Toledo, Ohio 43697-0321


Table of Contents<br />

General Information<br />

About this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . .1<br />

Product Family . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1<br />

Importance of Maintaining Proper<br />

Tire Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2<br />

System Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . .2<br />

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3<br />

Data Logging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3<br />

System Specifications . . . . . . . . . . . . . . . . . . . . . . . .3<br />

Component Weights . . . . . . . . . . . . . . . . . . . . . . . . . .3<br />

Operation<br />

System Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . .4<br />

Manually Checking Tire Pressure . . . . . . . . . . . . . . . .4<br />

Warning Lamp Description . . . . . . . . . . . . . . . . . . . .5<br />

Two Seconds On at Power-Up . . . . . . . . . . . . . . . . . .5<br />

Multiple Flashes at Power-Up . . . . . . . . . . . . . . . . . . .5<br />

Lamp on Continuously . . . . . . . . . . . . . . . . . . . . . . . .5<br />

How the System Operates . . . . . . . . . . . . . . . . . . . . .5<br />

Component Description . . . . . . . . . . . . . . . . . . . . . . .6<br />

Tire Hose (with integral check valve) . . . . . . . . . . . . .6<br />

Rotary Joint (RJ) . . . . . . . . . . . . . . . . . . . . . . . . . . . .6<br />

Manifold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6<br />

Electronic Control Unit (ECU) . . . . . . . . . . . . . . . . . . .6<br />

Controller Assembly . . . . . . . . . . . . . . . . . . . . . . . . . .6<br />

Tire Maintenance System Components . . . . . . . . . . .7<br />

System Setup<br />

Setting Tire Pressure Target . . . . . . . . . . . . . . . . . . 27<br />

System Learn Method . . . . . . . . . . . . . . . . . . . . . . . 27<br />

Troubleshooting Learn Mode . . . . . . . . . . . . . . . . . . 28<br />

Service Tool Method . . . . . . . . . . . . . . . . . . . . . . . . 28<br />

Troubleshooting<br />

Troubleshooting Introduction . . . . . . . . . . . . . . . . . 29<br />

Blink Code Diagnostics . . . . . . . . . . . . . . . . . . . . . . 29<br />

Blink Code Description . . . . . . . . . . . . . . . . . . . . . . 29<br />

Warning Lamp Status Chart<br />

(Normal Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30<br />

Warning Lamp Status Chart<br />

(Program Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . 30<br />

Glossary<br />

Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32<br />

Appendix<br />

Tire Maintenance System Performance<br />

at 100 psig . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33<br />

Tire Maintenance System Schematic . . . . . . . . . . . . 34<br />

Connector Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35<br />

Table of Contents<br />

<strong>Installation</strong><br />

<strong>Installation</strong> Materials and Supplies . . . . . . . . . . . . . . .8<br />

<strong>Installation</strong> Introduction . . . . . . . . . . . . . . . . . . . . . . .8<br />

Axle Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9<br />

Component <strong>Installation</strong> . . . . . . . . . . . . . . . . . . . . . .10<br />

Axle Hose <strong>Installation</strong> . . . . . . . . . . . . . . . . . . . . . . . .11<br />

Spindle Plug <strong>Installation</strong> . . . . . . . . . . . . . . . . . . . . .12<br />

Spindle Plug, Plug Driver, and Rubber<br />

Collar Identification Chart . . . . . . . . . . . . . . . . . . . . .13<br />

Rotary Joint Assembly . . . . . . . . . . . . . . . . . . . . . . .14<br />

<strong>Installation</strong> of Rotary Joint . . . . . . . . . . . . . . . . . . . .14<br />

Hubcap Assembly . . . . . . . . . . . . . . . . . . . . . . . . . .16<br />

Controller Assembly <strong>Installation</strong> . . . . . . . . . . . . . . .17<br />

Wiring Harness <strong>Installation</strong> . . . . . . . . . . . . . . . . . . .18<br />

Axle Vent <strong>Installation</strong> . . . . . . . . . . . . . . . . . . . . . . . .19<br />

Control Line <strong>Installation</strong> . . . . . . . . . . . . . . . . . . . . . .19<br />

Additional Axles . . . . . . . . . . . . . . . . . . . . . . . . . . . .19<br />

Tire Hose <strong>Installation</strong> . . . . . . . . . . . . . . . . . . . . . . . .24<br />

Configuration, Clocking, and<br />

Tire Hose Selection Chart . . . . . . . . . . . . . . . . . . . . .25<br />

Label Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . .26


General Information<br />

General Information<br />

About this Manual<br />

This manual is provided to support the Spicer® Tire<br />

Maintenance System. The manual provides the following<br />

information:<br />

• General Information<br />

• Operation<br />

• Components<br />

• <strong>Installation</strong><br />

• System Set-up<br />

• Glossary<br />

Additional information on the Spicer® Tire Maintenance<br />

System is available in the following publications:<br />

•Operator Instructions (ACDR-0003)<br />

•Troubleshooting and Service (AXTS-0025)<br />

Product Family<br />

Spicer’s® Tire Maintenance System is one of a family<br />

of tire pressure management products that improve the productivity<br />

of commercial vehicles. Spicer’s® family of<br />

tire pressure management products include:<br />

• Tire Maintenance System–This system senses<br />

when one or more tires are below the desired cold<br />

pressure setting and reinflates the tires to the<br />

desired setting. The system alerts the vehicle operator,<br />

via a warning lamp, when tires are significantly<br />

below the desired pressure.<br />

• Mobility Systems–These systems are used in military<br />

and on/off-highway commercial applications.<br />

Spicer’s® mobility systems are capable of<br />

controlling tire pressure over a wide range of operating<br />

conditions. In addition to providing the benefits<br />

of the systems described above, these systems can<br />

lower tire pressure significantly to maximize the area<br />

of the tire footprint and greatly improve vehicle<br />

mobility under soft surface conditions.<br />

1


General Information<br />

Importance of Maintaining Proper Tire<br />

Pressure<br />

Maintaining proper tire pressures can result in significant<br />

benefits for owners as well as operators. Tires are second<br />

only to fuel as a maintenance cost. They account for the<br />

majority of road failures, primarily as a result of underinflation.<br />

Tires represent a fleet’s number one labor maintenance<br />

cost, contributing to over half of the total maintenance dollars<br />

spent.<br />

System Overview<br />

The Spicer Tire Maintenance System is designed to<br />

automatically inflate tires that are below their cold tire pressure<br />

setting using compressed air from the brake supply tank.<br />

Air seals and hoses remain non-pressurized when the system<br />

is not actively checking or inflating the tires. A warning lamp<br />

will turn on when one or more tire pressure(s) is low by 10%<br />

or more. The lamp will not turn on for minimal inflation<br />

requirements of less than 10%, thus avoiding operator distraction<br />

when no action is required.<br />

If a tire is low, the remaining tires are protected from pressure<br />

loss by integral check-valves located in each tire hose. In<br />

addition, should system or tire maintenance be required (i.e.<br />

leaky tire resulting in excessive inflation), the lamp will flash<br />

multiple times at power-up indicating service is required.<br />

General Information<br />

Under Inflation Over Inflation Normal Inflation<br />

218UX005<br />

2


General Information<br />

Features<br />

• Lamp on when tires 10% low (programmable)<br />

• Checks tire pressure every 10 minutes<br />

• Non-pressurized lines and seals when not inflating<br />

• Warning lamp on only when service is required (not<br />

every inflation)<br />

• Does not pressurize axle tube (prevents contamination<br />

of air seals)<br />

• Seal and line leaks will not pressurize wheel ends<br />

• No venting at wheel end prevents contamination<br />

from entering hubcap<br />

• Check-valves located in tire hoses<br />

• Industry standard data link (SAE J1587) for communications<br />

and service<br />

• Historical information retained through power-ups<br />

• Leaky tire detection<br />

• Automatic pressure target learn mode<br />

• Serviceable filter at manifold keeps lines and seals<br />

clean<br />

• System detects and logs service code if no supply air<br />

for greater than 24 hours<br />

Data Logging<br />

• Active and historical service codes (clear after 50<br />

resets without reoccurrence)<br />

• Count of inflation events<br />

• Total inflation time<br />

• Total hold time (pressurized)<br />

• Count of power resets<br />

• Total powered time<br />

• Inflation time histogram data<br />

• Pressure below target histogram data<br />

System Specifications<br />

• Tire pressure setting range: 80–125 psi<br />

• Pressure sensor accuracy: +/- 1%<br />

• Pressure resolution: 0.5 psi<br />

• Pressure protection valve: 80 +/- 5 psi<br />

• Pressure check interval: 10 minutes<br />

• Power requirement (at 12 VDC):<br />


Operation<br />

Operation<br />

System Operation<br />

Manually Checking Tire Pressure<br />

To ensure that the system is functioning, the operator should<br />

verify that a 2 second warning lamp bulb check occurs when<br />

the unit is powered. The system is powered from the “blue<br />

circuit” on the 7 pin trailer connector.<br />

Once powered, the brake supply tank must be charged before<br />

the system will operate. The system will then pressurize the<br />

lines and measure the tire pressure. If one or more tires are<br />

low, the system automatically inflates the low tire(s) to the<br />

cold tire pressure setting. The remaining tires are protected<br />

from pressure loss by check-valves located in each tire hose.<br />

If one or more tires are low by 10% or more, the warning<br />

lamp will turn on and remain on until the tire(s) are reinflated.<br />

Once the tires are at the proper pressure, the seals and hoses<br />

will be depressurized, preventing unnecessary wear on the<br />

seals. The system rechecks tire pressure every 10 minutes by<br />

momentarily pressurizing the lines and measuring tire pressure<br />

as described above.<br />

If the warning lamp flashes multiple times on powerup, the<br />

system has stored a service code and may be unable to properly<br />

check or maintain tire pressure. The operator should<br />

manually check tire pressures to ensure that it is safe to operate<br />

the vehicle and should seek service at the next opportunity.<br />

If the warning lamp remains on, the system is attempting to<br />

inflate the tires but may not be able to adequately maintain<br />

proper tire pressure. The operator should stop and check the<br />

tires to determine if it is safe to continue to operate the vehicle<br />

and should seek service at the next opportunity.<br />

WARNING: To prevent injury, always wear eye protection<br />

when maintaining or servicing the vehicle.<br />

Note: Check valves in the tire hoses prevent tire pressure loss<br />

when a tire hose is removed. You may, however, experience<br />

air flow at the open line and a low tire indication on<br />

the warning lamp if the tire hose is disconnected and the<br />

system is powered.<br />

To manually check tire pressure:<br />

• Disconnect tire hose from tee or straight fitting at<br />

hubcap, or disconnect from valve stem.<br />

• Use a conventional gage to measure tire pressure at<br />

hose end or at valve stem. See illustration below.<br />

• Reattach and firmly hand-tighten tire hose.<br />

CAUTION: Do not overtighten tire hose or the seal may<br />

be damaged! Ensure tire hoses are not stretched or<br />

rubbing on the wheel!<br />

Tire Pressure<br />

Gage<br />

Tire Hose<br />

Operation<br />

CAUTION: All hoses must be connected for system to<br />

operate properly. If any of the hoses are removed or<br />

damaged, the system cannot inflate any low tire(s).<br />

218UX046<br />

4


Operation<br />

Warning Lamp Description<br />

Two Seconds On at Power-Up<br />

This is a system verification and warning lamp bulb check. If<br />

there is no bulb check at power-up, the system may not be<br />

functioning. Verify proper power is applied to the system.<br />

Note: The maintenance system utilizes the trailer’s blue circuit<br />

for power. Some early model tractors do not power this<br />

circuit resulting in no power to the system.<br />

Multiple Flashes at Power-Up<br />

If the warning lamp flashes multiple times on power-up, the<br />

system has stored a service code. A service code indicates the<br />

need for tire or system maintenance. If this occurs, the system<br />

may be unable to properly check or maintain tire pressure.<br />

Verify that all tires are inflated properly, and have the<br />

system serviced at the next opportunity.<br />

Note: Only active service codes will cause the warning lamp<br />

to blink multiple times at power up.<br />

How the System Operates<br />

The system checks the tire pressures on a ten-minute interval.<br />

To measure the tire pressure, the system charges the air lines<br />

with a series of pulses. If the line pressure has not increased<br />

to the target tire pressure after a specified period of time, the<br />

system will begin to inflate the low tire(s). If the measured tire<br />

pressure is 10% or more below the target tire pressure, the<br />

warning lamp will illuminate while the system is inflating the<br />

tire(s) to inform the driver of a potential tire leak. Once the target<br />

tire pressure is achieved, the system performs an additional<br />

check to verify that the control lines have depressurized<br />

and turns off the lamp.<br />

To prevent air from leaking while the control lines are not<br />

pressurized, there is a check valve (no spring valve core) in<br />

each of the tire hoses.<br />

If the warning lamp is on, the driver should check all the tires<br />

for damage and take corrective actions if applicable.<br />

Lamp on Continuously<br />

The lamp will light if the measured pressure of one or more<br />

tires is 10% or more below the cold pressure setting. The<br />

lamp will remain on until the tires are reinflated to the proper<br />

tire pressure. If the lamp is on, the operator should stop the<br />

vehicle and check the tires for damage.<br />

Under some conditions of normal operation, you may find<br />

that the warning lamp illuminates when no visible damage is<br />

apparent. This may be due to changes in ambient temperature<br />

while the trailer is idle. When the system is first powered on a<br />

trailer at a temperature significantly lower than when previously<br />

operated, cooling of the tires may result in a drop of<br />

pressure below 10% of the target pressure, thus illuminating<br />

the lamp.<br />

Refer to the Tire Maintenance System Performance at 100<br />

psig on page 33 for examples of temperature effects on tire<br />

pressure. In addition, the lamp may turn on solid as the result<br />

of a significant air line leak, the system failing to depressurize,<br />

or because a new ECU has not had a target programmed yet.<br />

CAUTION: Extended periods of use with the lamp illuminated<br />

may decrease the life of the rotary air seals.<br />

Typical<br />

Trailer Mounted<br />

TMS Warning Light<br />

218UX006<br />

5


Components<br />

Component Description<br />

Tire Hose (with integral check valve)<br />

• Provides an air passage from the hubcap tee or<br />

straight fitting to the tire.<br />

• Integral check valves in the tire hoses allow the air<br />

lines and seals to remain non-pressurized when the<br />

system is not checking or inflating the tires.<br />

• No modification to the standard valve stem or core is<br />

required.<br />

Rotary Joint (RJ)<br />

• Provides a means to allow the air to flow from a nonrotating<br />

axle spindle to the rotating hubcap.<br />

• The RJ is composed of seals and bearings. The air<br />

seal prevents leakage from the rotating shaft and the<br />

oil seal guards against contamination.<br />

• Provides a vent for air pressure in the hubcap during<br />

normal use and in the event of rotary joint damage.<br />

• Under normal operation, the RJ will be nonpressurized<br />

for the majority of the time.<br />

Manifold<br />

• Solenoids control the flow of air to tires.<br />

• Pressure sensor reads tire pressure.<br />

• Serviceable inlet filter reduces contamination from<br />

the air source.<br />

Electronic Control Unit (ECU)<br />

• Controls the manifold to read and maintain tire pressures.<br />

• Performs a lamp check to inform the driver that the<br />

system is powered and operational.<br />

• Turns on the warning lamp when the measured tire<br />

pressure drops more than 10% (typical value) below<br />

the target pressure.<br />

• Detects faults and displays service codes via the<br />

warning lamp.<br />

• Provides on-board diagnostic support over a industry<br />

standard SAE J1708/J1587 communication interface.<br />

• Provides diagnostics support via blink-codes.<br />

• Stores historical data for future use.<br />

Components<br />

Controller Assembly<br />

• Manifold<br />

• ECU<br />

• Mounting bracket<br />

6


Components<br />

Tire Maintenance System Components<br />

TMS Warning Lamp<br />

Diagnostic Port<br />

Main Power Harness<br />

To ABS<br />

Controller Assembly<br />

Hubcap & Hose Assembly<br />

Mounting<br />

Bracket<br />

ECU<br />

Pressure<br />

Sensor<br />

Hose<br />

Assembly<br />

"T" Fitting<br />

Check<br />

Valve<br />

Check<br />

Valve<br />

Hose<br />

Assembly<br />

Manifold<br />

Rotary Joint<br />

218UX002<br />

7


<strong>Installation</strong><br />

<strong>Installation</strong><br />

<strong>Installation</strong> Materials and Supplies<br />

<strong>Installation</strong> Introduction<br />

In addition to hardware provided by <strong>Dana</strong>, the installer shall<br />

provide the following:<br />

• Hubcaps, unless pre-installed on dressed axle.<br />

• Pressure protection valve.<br />

• Spindle plug driver and handle, unless plugs are<br />

already installed in axle.<br />

• Air lines and fittings.<br />

• Warning lamp and wire.<br />

• 115 psi shop air or PC/hand-held tool to set tire<br />

pressure target.<br />

• Optional J560 to 5-pin extension harness if trailer is<br />

pre-ABS.<br />

• Controller assembly mounting bolts.<br />

Identify the bullet item below that describes the condition of<br />

the trailer axles and proceed as directed.<br />

• If the maintenance system hardware is already<br />

installed on a fully dressed axle, skip to Controller<br />

Assembly <strong>Installation</strong>.<br />

• If tire maintenance system axle hose and spindle<br />

plugs are already installed on the axle, skip to Rotary<br />

Joint Assembly.<br />

• If the axles have been pre-drilled, but no hardware<br />

has been installed, skip to Component <strong>Installation</strong>.<br />

• For retrofit installations start with the following procedures.<br />

<strong>Installation</strong><br />

8


<strong>Installation</strong><br />

Axle Preparation<br />

The following describes the procedure for preparing a trailer<br />

axle for system installation.<br />

The Spicer Tire Maintenance System is designed to be<br />

used on trailer axles with hollow tapered (D22 series) or hollow<br />

parallel (P22 series) spindles with inside diameter<br />

machined to a minimum depth of 1.0". Some trailer axles have<br />

a solid web inside the spindle under the inner bearing that<br />

may be modified to allow for a hose to be routed through the<br />

obstruction. Consult with the axle manufacturer for approval<br />

to modify the axle before installation of the <strong>Dana</strong> Spicer Tire<br />

Maintenance System.<br />

The Spicer Tire Maintenance System does not require<br />

the removal of the wheel assemblies. However, the tires must<br />

be blocked and the trailer supported to prevent movement<br />

during installation.<br />

WARNING: Block all wheels before beginning this<br />

installation procedure. Never work under a vehicle supported<br />

by a jack.<br />

1. Block tires to keep the trailer from moving.<br />

D22-Style<br />

Tapered Spindle<br />

OR<br />

218UX008<br />

P22-Style<br />

Parallel Spindle<br />

218UX007<br />

CAUTION: Do not weld on axles with hoses installed as<br />

hoses may be damaged.<br />

Note: The Maintenance System cannot be installed on solid<br />

spindle trailer axles.<br />

Note: The Maintenance System is not compatible with Axilok<br />

or cotter pin locked spindle nuts. Use of the 3-piece jam<br />

nut system with the maintenance system is recommended.<br />

Pro-Torque nuts may require use of an optional<br />

hubcap spacer.<br />

2. If the trailer is equipped with an air suspension system,<br />

deflate the air springs or support the trailer<br />

frame to prevent settling during installation.<br />

3. If the wheel end is oil lubricated, drain the oil from<br />

the hubcap and discard.<br />

4. Remove the hubcap bolts and hubcap.<br />

5. Remove the spindle plug from the end of the spindle.<br />

6. Inspect spindle plug bore and remove any burrs or<br />

sealant.<br />

7. Check the inside of the spindle to insure that there is<br />

a passage through the axle to allow installation of the<br />

air line.<br />

8. Locate the three 1/4" pipe plugs on the top of the<br />

axle tube near the center and remove. If the axle was<br />

not prepared at the factory with the three 1/4" pipe<br />

thread holes, proceed to step 10.<br />

9. Proceed to the Component <strong>Installation</strong> section.<br />

9


<strong>Installation</strong><br />

Note: Follow the axle manufacturer’s recommendations for<br />

the location and process to modify axle. Failure to follow<br />

the recommendations may reduce the life or load carrying<br />

capacity of the trailer.<br />

Note: On Hendrickson axle/suspensions, only drill in window<br />

area (consult manufacturer for details).<br />

10. On the top of the axle under the trailer, locate the<br />

center and mark. From the center mark just created,<br />

measure to the left and right an equal distance of<br />

13-1/2" or greater (within suspension brackets) and<br />

mark.<br />

11. Drill and tap 1/4" NPT holes in axle beam to prepare<br />

for component installation.<br />

• Mount drilling fixture on trailer axle in proper<br />

location (13.5" from center and at 12:00).<br />

• Install the 1/2" x 1/2" long drill bushing in the<br />

fixture.<br />

• Install the 3/16 x 3/4" long drill bushing in the<br />

first bushing.<br />

• Drill though the axle tube with a 3/16" boron<br />

steel drill bit. Do not exceed 300 RPM.<br />

Note: Cutting oil is recommended.<br />

Note: A lever may be necessary to produce enough force to<br />

cut the material. Reduce force on lever before the bit<br />

goes through to prevent breaking the bit.<br />

• Remove the 3/16" and 1/2" drill bushings from<br />

the fixture.<br />

• Install the 7/16 x 1/2" long drill bushing in the<br />

fixture.<br />

• Drill through the axle tube with a 7/16" boron<br />

steel drill bit. Do not exceed 300 RPM.<br />

• Remove fixture and ream hole with a tapered<br />

reamer for a 1/4" tapered pipe.<br />

• Reinstall fixture and install tapping bushing.<br />

• Tap hole with a 1/4" male pipe tap.<br />

• Clean debris from the axle generated during the<br />

drilling and tapping operations. Check the size<br />

of the threads created.<br />

12. Proceed to the Component <strong>Installation</strong> section.<br />

Component <strong>Installation</strong><br />

Refer to the following assembly procedures to complete the<br />

installation of the Spicer Tire Maintenance System.<br />

Component installation procedures include:<br />

• Axle Hose <strong>Installation</strong><br />

• Spindle Plug <strong>Installation</strong><br />

• Rotary Joint Assembly and <strong>Installation</strong> of Rotary<br />

Joint<br />

• Hubcap Assembly<br />

• Controller Assembly<br />

• Wiring Harness <strong>Installation</strong><br />

• Axle Vent and Control Line <strong>Installation</strong><br />

• Tire Hose <strong>Installation</strong><br />

<strong>Installation</strong><br />

10


<strong>Installation</strong><br />

Axle Hose <strong>Installation</strong><br />

1. In the left 1/4" pipe hole located on the top of the axle<br />

tube, route the small covered end of the metal<br />

braided hose into the axle.<br />

Note: Make sure that the braided hose heads toward the spindle<br />

end.<br />

2. Making sure that the hose is going toward the correct<br />

wheel end, continue feeding the metallic covered<br />

hose into the trailer axle until the small end of the<br />

hose exits the spindle end.<br />

3. Thread the large adapter end of the axle hose assembly<br />

into the axle and tighten to 20 lbs. ft. (27.1 N•m).<br />

4. Remove protective coverings from end of the axle<br />

hose assembly and blow air through it to remove any<br />

debris.<br />

5. Repeat steps 1 through 4 for the opposite side of the<br />

axle.<br />

Hose Routing in Axle<br />

Route<br />

Braided Hose<br />

Into Axle<br />

Route<br />

Braided Hose<br />

Into Axle<br />

D22-Style<br />

Spindle<br />

OR<br />

P22-Style<br />

Spindle<br />

218UX009<br />

Thread Adapter<br />

Into Axle<br />

Thread Adapter<br />

Into Axle<br />

D22-Style<br />

Spindle<br />

OR<br />

P22-Style<br />

Spindle<br />

218UX010<br />

11


<strong>Installation</strong><br />

Spindle Plug <strong>Installation</strong><br />

1. Route the end of the left axle hose assembly through<br />

the center of the left spindle plug assembly.<br />

2. With the breather hole of the spindle plug assembly<br />

located in the 12 o’clock position, place the plug<br />

assembly at the spindle end.<br />

3. Route the braided hose assembly through the slot in<br />

the end of the plug driver and press the plug into the<br />

spindle until the driver bottoms on the end of the<br />

spindle.<br />

Note: The driver regulates the correct installation depth.<br />

4. Repeat steps 1 through 3 for the right side of the<br />

axle.<br />

Spindle Plug<br />

with Small Hole and "Flat"<br />

at 12 O'Clock Position<br />

D22 Spindle<br />

D22-Style<br />

Spindle<br />

Braided<br />

Hose<br />

<strong>Installation</strong><br />

Plug<br />

Driver Handle<br />

Plug<br />

Driver<br />

P22 Spindle<br />

P22-Style<br />

Spindle<br />

Braided<br />

Hose<br />

Spindle Plug<br />

with Small Hole and "Flat"<br />

at 12 O'Clock Position<br />

Plug<br />

Driver Handle<br />

Plug<br />

Driver<br />

218UX011<br />

12


<strong>Installation</strong><br />

Spindle Plug, Plug Driver, and Rubber Collar Identification Chart<br />

Model<br />

Spindle<br />

Identification*<br />

Spindle<br />

Plug<br />

Plug<br />

Driver**<br />

Rubber<br />

Collar<br />

D22 (Tapered) 1.750" 676397 676461 676364<br />

P22 (Parallel) 2.500" 676385 676462 676347<br />

P22 (Parallel) 2.753" 676447 676463 676448<br />

*NOTE: A minimum bore depth of 1.0" required.<br />

**NOTE: Use standard drive handle (ex: Kent Moore J-8092) with appropriate plug driver.<br />

13


<strong>Installation</strong><br />

Rotary Joint Assembly<br />

Install rotary joint in appropriate rubber collar. See the Spindle<br />

Plug, Plug Driver, and Rubber Collar Identification Chart on<br />

page 13. Take care to align the “TOP” breather groove on the<br />

rubber collar with the flat on the rotary joint.<br />

CAUTION: Install the rubber collar onto the outboard<br />

side of the rotary joint such that the label and part<br />

number face out.<br />

<strong>Installation</strong> of Rotary Joint<br />

Note: Install hubs and drums according to manufacturers<br />

specifications before installing the rotary joint assemblies.<br />

1. Place the stepless ear clamp onto the axle hose<br />

assembly end sticking out of the end of the spindle.<br />

2. Slide the smooth barbed end of the rotary joint<br />

assembly into the end of the axle hose assembly<br />

until the hose bottoms on the rotary joint’s body.<br />

Back<br />

Vie w<br />

"Top"<br />

Notch<br />

Flat<br />

"Top" Notch<br />

3. Using a crimping tool (Oetiker® pliers), squeeze the<br />

clamp to tighten the hose to the rotary joint.<br />

4. Check the orientation of the breather grooves in rubber<br />

collar to insure the top one aligns itself with flat<br />

on the rotary joint body. Orient the flat on the rotary<br />

joint body (located near the clamp) to the 12 o’clock<br />

position and press the rotary joint assembly into the<br />

spindle bore. The assembly is seated when the outer<br />

edge is almost flush with the end of the spindle.<br />

<strong>Installation</strong><br />

T<br />

O<br />

P<br />

"Top"<br />

Note: For ease of installation, apply lubricant (grease or<br />

oil) to inside bore of axle spindle prior to installing rotary<br />

joint assembly.<br />

Fr ont<br />

View<br />

Press ONLY Here<br />

When Inserting<br />

Into Axle End<br />

CAUTION: Do not push on brass colored air tube when<br />

inserting rotary joint assembly into spindle. Carefully<br />

push only on face of rotary joint where it meets the<br />

rubber collar.<br />

IMPORTANT:<br />

Rubber Collar<br />

Fits As Shown<br />

T<br />

O<br />

P<br />

Face of Rotary Joint is<br />

Behind the Lip of the<br />

Mounting Cylinder<br />

5. After assembly, verify proper installation by grasping<br />

the brass colored tube at the center of the rotary joint.<br />

Using fingers only, pull firmly outward on the joint<br />

assembly. A properly installed and seated rotary joint<br />

will not be removed with hand pressure alone.<br />

T<br />

O<br />

P<br />

Grasp brass colored<br />

tube at center as<br />

illustrated<br />

Pull firmly straight out<br />

to verify proper<br />

installation<br />

14


<strong>Installation</strong><br />

Braided<br />

Hose<br />

Crimping<br />

Tool<br />

Rotary Joint<br />

Assembly<br />

Position<br />

"Flat"<br />

on Top<br />

Spindle<br />

Assemble Parts<br />

and Crimp<br />

218UX012<br />

Braided<br />

Hose<br />

Spindle<br />

218UX013<br />

15


<strong>Installation</strong><br />

Hubcap Assembly<br />

1. Place hubcap gasket over rotary joint’s exit tube and<br />

bulkhead adapter.<br />

2. Lubricate o-ring on the rotary joint’s bulkhead<br />

adapter.<br />

3. From the inside, insert the bulkhead adapter through<br />

the hole in the hubcap marked “Air.” Be sure to align<br />

the flat on the bulkhead adapter to the flat inside the<br />

hubcap. Attach the jam nut and hand tighten. When<br />

properly seated, the top of the bulkhead adapter will<br />

be flush with the top of the jam nut.<br />

Braided<br />

Hose<br />

<strong>Installation</strong><br />

Nut<br />

Hubcap<br />

Spindle<br />

218UX014<br />

CAUTION: If wheels are installed, refer to Tire Hose <strong>Installation</strong><br />

on page 24 and Configuration, Clocking, and<br />

Tire Hose Selection Chart on page 25 to determine correct<br />

“clocking” of hubcap. Wheel must be properly “clocked”<br />

to hubcap to prevent hoses rubbing on the wheel. Failure to<br />

properly “clock” hubcap may result in hose failure.<br />

4. Align the hubcap and gasket and install the 6 bolts.<br />

Torque to the values listed in the Torque Values Chart<br />

per manufacturers recommendations.<br />

5. Torque the rotary joint's jam nut to 10-12 lbs. ft.<br />

6. Install lubricant in wheel end to the correct level.<br />

Torque Values Chart<br />

Hub Material Bolt Grade Bolt Size Torque<br />

Iron 5 5/16-18 16-19 lbs. ft.<br />

Iron 8 5/16-18 22-27 lbs. ft.<br />

Aluminum 5 & 8 5/16-18 10-12 lbs. ft.<br />

CAUTION: Use of Pro-Torque spindle nuts may require<br />

a hubcap spacer to prevent interference.<br />

16


<strong>Installation</strong><br />

Controller Assembly <strong>Installation</strong><br />

1. Locate the controller assembly such that it can conveniently<br />

connect to the brake supply tank.<br />

2. Drill two holes on 4" centers to accommodate the<br />

mounting bracket. Attach the controller assembly<br />

with two 5/16" fasteners. See illustration below.<br />

CAUTION: The controller assembly must be mounted<br />

vertically with ECU connector down to prevent damage.<br />

See illustration below.<br />

CAUTION: Do not weld on bracket without first removing<br />

both ECU & Manifold from the bracket.<br />

CAUTION: Cover Controller Assembly prior to painting<br />

or undercoating trailer to prevent plugging of manifold<br />

and ECU vents.<br />

Cross<br />

Member<br />

5/16"<br />

Mounting<br />

Bolts<br />

218UX028<br />

17


<strong>Installation</strong><br />

Wiring Harness <strong>Installation</strong><br />

1. Plug the Power Input connector side of <strong>Dana</strong>'s Tire<br />

Maintenance System harness into the 5 pin Packard<br />

connector coming from the J560 interface. See illustration<br />

below.<br />

2. Plug the cable from the ABS wire harness into the 5-<br />

pin Packard ABS connector on the Tire Maintenance<br />

System harness.<br />

3. Route the harness to connect to the ECU, Manifold,<br />

and Pressure Sensor located on the maintenance<br />

controller assembly.<br />

4. Mount the diagnostic connector to the side of the<br />

trailer, typically in front of the tires. For slider applications,<br />

make sure to allow for adequate movement<br />

of the slider.<br />

5. Mount the lamp on the front corner or side of the<br />

trailer within view of the operators side view mirror.<br />

On applications with tractors utilizing large wind fairings,<br />

locating the lamp near the left rear wheels (near<br />

the ABS warning lamp) may be preferred. Connect<br />

one side of the lamp to ground.<br />

6. Route the lamp power wire (16 AWG minimum) and<br />

connect to the 0.156" female bullet connector of the<br />

Tire Maintenance System harness.<br />

7. Secure harness as required.<br />

Note: For pre-ABS equipped trailer retrofits, a power harness<br />

is also available. When using this harness, cut the cable<br />

length as required and connect to the vehicle power at<br />

the SAE J560 connector.<br />

J560<br />

5 Pin<br />

Packard<br />

Power Input<br />

5 Pin<br />

Packard<br />

To<br />

ABS<br />

Male Bullet<br />

Warning Lamp<br />

Warning<br />

Lamp<br />

Male<br />

Bullet<br />

Provided<br />

by Trailer<br />

Manufacturer<br />

Valve<br />

Pressure<br />

Sensor<br />

1587<br />

Diagnostic<br />

Provided<br />

by <strong>Dana</strong><br />

<strong>Installation</strong><br />

ECU<br />

To ABS<br />

218UX016<br />

18


<strong>Installation</strong><br />

Axle Vent <strong>Installation</strong><br />

1. Install a 1/4" NPT male to 3/8" NTA fitting in the 1/4"<br />

pipe thread located on the axle for venting.<br />

2. Run 3/8" OD Nylon Air Brake Tubing to the frame and<br />

position the end facing down to prevent contamination.<br />

See illustration below.<br />

3. Secure tubing as required.<br />

Vent Fitting<br />

1/4" NTP to 3/8"<br />

Nylon Tubing<br />

Adapter<br />

Trailer Frame Rail<br />

Front of Trailer<br />

Axle Vent Hose<br />

(minimum 3/8" OD<br />

nylon air brake tubing)<br />

Trailer<br />

Axle<br />

CAUTION: Position the end of the vent tube down to<br />

prevent contamination of the axle.<br />

Control Line <strong>Installation</strong><br />

A pressure protection value (PPV) is recommended between<br />

the trailer air supply tank and the Tire Maintenance System<br />

controller assembly. An existing suspension PPV can also be<br />

used to supply air to the suspension as well as the Tire Maintenance<br />

System.<br />

Proper Tire Maintenance System operation requires correct<br />

air line diameters and lengths. The following diagrams show<br />

air brake tubing lengths and sizes and associated fittings<br />

required to complete the system installation.<br />

CAUTION: To prevent twisting air line inside axle when<br />

tightening fittings to the axle hose fitting, use a wrench<br />

to hold the axle hose fitting.<br />

CAUTION: Proper Tire Maintenance System operation<br />

requires correct air line diameters and lengths. <strong>Installation</strong><br />

sizes and lengths must be within limits shown.<br />

CAUTION: Proper Tire Maintenance System operation<br />

requires correct air line connections. All junctions of<br />

two or more 1/4" lines MUST “upsize” to 3/8" line for<br />

adequate flow.<br />

CAUTION: To prevent contamination of the Tire Maintenance<br />

System, do not install fitting on the bottom of<br />

the air supply tank.<br />

Additional Axles<br />

For systems with 3 or 4 axles, observe the installation requirements<br />

as shown in the following diagrams. Extend the main 3/<br />

8" run as necessary. However, all total line lengths must still<br />

remain within the limits listed on the diagrams.<br />

CAUTION: Failure to properly install axle vent may<br />

result in wheel end pressurization and/or water ingestion<br />

which could cause wheel end failure.<br />

19


<strong>Installation</strong><br />

Typical Maintenance System Plumbing - 3/8” and 1/4” Lines with Junction Manifold<br />

A<br />

J<br />

D<br />

Supply<br />

Tank<br />

E<br />

A<br />

G<br />

F<br />

IN<br />

OUT<br />

Controller<br />

Assembly<br />

Front<br />

B<br />

C<br />

D<br />

OR<br />

B<br />

H<br />

Plug<br />

D<br />

<strong>Installation</strong><br />

J<br />

To<br />

Additional<br />

Axles<br />

A<br />

Item Description<br />

A Air Line<br />

B Air Line<br />

C Air Line<br />

D Axle Connector<br />

E Pressure Protection<br />

Valve<br />

F Controller In Fitting<br />

G Controller Out Fitting<br />

H Junction Manifold<br />

J Axle Vent Fitting<br />

3/8" OD Nylon Air Brake Tubing: any length<br />

3/8" OD Nylon Air Brake Tubing: 0-8 feet total<br />

1/4" OD Nylon Air Brake Tubing: 6-50 feet total<br />

1/8" NPT male to 1/4" NTA<br />

NPT to 3/8" NTA<br />

3/8" NPT male to 3/8" NTA<br />

3/8" NPT male to 3/8" NTA<br />

3/8" NTA inlet, 1/4" NTA outlets<br />

1/4" NPT male to 3/8" NTA<br />

NTA = Nylon Tubing Adapter<br />

218UX004<br />

20


<strong>Installation</strong><br />

Typical Maintenance System Plumbing - 3/8” and 1/4” Lines without Junction Manifold<br />

A<br />

J<br />

D<br />

C<br />

Supply<br />

Tank<br />

C<br />

I<br />

E<br />

A<br />

Front<br />

B<br />

F<br />

IN<br />

Controller<br />

Assembly<br />

G<br />

OUT<br />

C<br />

B<br />

I<br />

C<br />

D<br />

J<br />

A<br />

Item Description<br />

A Air Line<br />

B Air Line<br />

C Air Line<br />

D Axle Connector<br />

E Pressure Protection<br />

Valve<br />

F Controller In Fitting<br />

G Controller Out Fitting<br />

I Tee(s)<br />

J Axle Vent Fitting<br />

3/8" OD Nylon Air Brake Tubing: any length<br />

3/8" OD Nylon Air Brake Tubing: 0-8 feet total<br />

1/4" OD Nylon Air Brake Tubing: 6-50 feet total<br />

1/8" NPT male to 1/4" NTA<br />

NPT to 3/8" NTA<br />

3/8" NPT male to 3/8" NTA<br />

run tee: 3/8" NPT male, 3/8" NTA, 3/8" NTA<br />

3/8" NTA inlet, 1/4" NTA outlets<br />

1/4" NPT male to 3/8" NTA<br />

NTA = Nylon Tubing Adapter<br />

218UX041<br />

21


<strong>Installation</strong><br />

Typical Maintenance System Plumbing - 3/8” Lines Only<br />

A<br />

J<br />

D<br />

B<br />

I<br />

B<br />

Supply<br />

Tank<br />

A<br />

E<br />

Front<br />

G<br />

F<br />

IN<br />

OUT<br />

Controller<br />

Assembly<br />

B<br />

I<br />

D<br />

B<br />

<strong>Installation</strong><br />

J<br />

A<br />

Item Description<br />

A Air Line<br />

B Air Line<br />

D Axle Connector<br />

E Pressure Protection<br />

Valve<br />

F Controller In Fitting<br />

G Controller Out Fitting<br />

I Tee(s)<br />

J Axle Vent Fitting<br />

3/8" OD Nylon Air Brake Tubing: any length<br />

3/8" OD Nylon Air Brake Tubing: 3-30 feet total<br />

1/8" NPT male to 3/8" NTA<br />

NPT to 3/8" NTA<br />

3/8" NPT male to 3/8" NTA<br />

run tee: 3/8" NPT male, 3/8" NTA, 3/8" NTA<br />

3/8" NTA inlet, 3/8" NTA outlets<br />

1/4" NPT male to 3/8" NTA<br />

NTA = Nylon Tubing Adapter<br />

218UX040<br />

22


<strong>Installation</strong><br />

Typical Maintenance System Plumbing - Single Axle with 1/4" or 3/8" Lines<br />

Supply<br />

Tank<br />

A<br />

E<br />

Front<br />

F<br />

IN<br />

OUT<br />

Controller<br />

Assembly<br />

B<br />

G<br />

D<br />

J<br />

A<br />

Item Description<br />

A Air Line<br />

B Air Line<br />

D Axle Connector<br />

E Pressure Protection<br />

Valve<br />

F Controller In Fitting<br />

G Controller Out Fitting<br />

J Axle Vent Fitting<br />

3/8" OD Nylon Air Brake Tubing: any length<br />

3/8" OD Nylon Air Brake Tubing: 4-30 feet total OR 1/4" OD Nylon air Brake Tubing: 8-50 feet total<br />

1/8" NPT male to 3/8" or 1/4" NTA<br />

(depends on axle hose fitting and air line B)<br />

NPT to 3/8" NTA<br />

3/8" NPT male to 3/8" NTA<br />

NTA = Nylon Tubing Adapter<br />

run tee: 3/8" NPT male, 3/8" NTA, 3/8" NTA OR<br />

run tee: 3/8" NPT male, 1/4" NTA, 1/4" NTA (depends on air line B)<br />

1/4" NPT male to 3/8" NTA<br />

218UX042<br />

23


<strong>Installation</strong><br />

Tire Hose <strong>Installation</strong><br />

1. Position the hubcap and wheel so the hoses will not<br />

stretch or rub on the wheel. See the Configuration,<br />

Clocking , and Tire Hose Selection Chart on page 25.<br />

CAUTION: Wheel must be properly “clocked” to hubcap<br />

to prevent hoses rubbing on the wheel. Failure to<br />

do so may result in hose failure.<br />

2. Screw the inverted flare nut on the tire hose tee fitting<br />

into the rotary joint’s bulkhead adapter and<br />

tighten finger tight. Tighten with a wrench an additional<br />

1/4 turn. See illustration below.<br />

3. Attach tire hose and check valve assemblies to the<br />

tee fitting.<br />

4. Install tire hoses on the tire valves and tighten with<br />

fingers.<br />

5. Tighten the tee or straight fitting to the tire hoses.<br />

CAUTION: Using a wrench or pliers to tighten the tire<br />

hose to the valve stem, tee, or straight fitting may<br />

damage the gasket causing a leak or decreased performance.<br />

Straight Fitting<br />

for Singles<br />

<strong>Installation</strong><br />

Check<br />

Valve<br />

OR<br />

Outer Wheel Hose<br />

Assembly<br />

Check<br />

Valve<br />

"T" Fitting<br />

For Duals<br />

Inner Wheel Hose<br />

Assembly<br />

218UX047<br />

24


<strong>Installation</strong><br />

Configuration, Clocking, and Tire Hose Selection Chart<br />

Clock "A"<br />

5-Hole or 5-Spoked<br />

Wheel <strong>Installation</strong><br />

(17.5" or 22.5" Wheel)<br />

Clock "B"<br />

5-Hole or 5-Spoked<br />

Wheel <strong>Installation</strong><br />

(19.5" or 24.5" Wheel)<br />

Clock "C"<br />

2-Hole or 4/6 Spoked<br />

Wheel <strong>Installation</strong><br />

(any size wheel)<br />

Wheel Size Hole Config Hose – Inner Hose – Outer Clock<br />

2 5 676481 676388 676482 676387<br />

17.5 X X X C<br />

17.5 X X X A<br />

19.5 X X X C<br />

19.5 X X X B<br />

22.5 X X X C<br />

22.5 X X X A<br />

24.5 X X X C<br />

24.5 X X X B<br />

Single n/a n/a X n/a n/a n/a n/a<br />

25


<strong>Installation</strong><br />

Label Locations<br />

1. Install the Tire Monitor System label at either the left<br />

front or the left rear side of the trailer.<br />

2. Install the Check Tires label near the warning lamp at<br />

the left front of the trailer.<br />

Place at Easily Visible Location<br />

Place at Easily<br />

Visible Location<br />

Near Warning Lamp<br />

<strong>Installation</strong><br />

Controller<br />

Assembly<br />

218UX038<br />

26


System Set-up<br />

Setting Tire Pressure Target<br />

After completing the installation, the system’s tire pressure<br />

target must be set before using the trailer. On power-up, the<br />

lamp will remain on as an indication that the target pressure<br />

has not been set.<br />

There are two methods for setting the system’s tire pressure<br />

target:<br />

• System Learn Method – all tire pressures are set to<br />

the cold tire pressure setting and the system reads<br />

the tire pressure target<br />

• Service Tool Method – a service tool (PC-based or<br />

hand-held) is used to “download” the target over the<br />

data link.<br />

Short Pins A and E<br />

and Release 3 Times<br />

to Enter Learn Mode<br />

F B<br />

A<br />

E<br />

D<br />

C<br />

218UX017<br />

System Learn Method<br />

In order to set the target tire pressure using this method, all<br />

the tires must be verified to be at the target pressure for an<br />

accurate setting. Use the procedure in How to Manually Check<br />

Tire Pressures to measure and set the cold tire target pressure<br />

for all tires.<br />

1. Apply 12 volt power to the trailer at the SAE J560<br />

connector.<br />

2. Provide adequate pressure to the brake supply tank.<br />

(Minimum of desired tire target pressure +5 psi or<br />

90 psi, whichever is greater.) Note: Older systems<br />

with ECU P/N 676351 require a minimum supply of<br />

110 psi to program.<br />

3. Remove the weather cap from the diagnostic connector.<br />

Short pins “A” and “E” in the following<br />

sequence: short the pins three times, maintaining<br />

the short for approximately 1 second on and waiting<br />

1 second off. The pins to be shorted can be easily<br />

identified by the interconnecting slot in the shell,<br />

allowing convenient use of a coin or screwdriver tip<br />

to short the pins together.<br />

4. Upon entering learn mode, the warning lamp will<br />

turn on for 2 seconds twice and will then flash once<br />

every 10 seconds to acknowledge that the learn<br />

mode is active.<br />

5. The system will pressurize the air lines for several<br />

seconds, and then wait for the pressure to stabilize.<br />

6. The tire pressure read will be stored as the target<br />

pressure. Once the target pressure is established,<br />

the warning lamp will turn ON continuous for 5 seconds<br />

and then flash out the target pressure. For<br />

example, if the tire pressure is 102 psi, the light will<br />

turn ON continuous for 5 seconds and then flash 1<br />

time, pause and then flash 10 more times, pause and<br />

then flash 2 more times (0 is represented by 10<br />

flashes). If the value flashed is lower than the desired<br />

target pressure, verify that all the tires are set to the<br />

proper pressure and that no line leaks are present.<br />

7. After the system has determined the target pressure,<br />

it will remain pressurized for up to 2 minutes (or<br />

until power is cycled). During this time, a manual<br />

check for air leaks should be made.<br />

If a line leak is detected, the system will not pro<br />

gram a target pressure and warning lamp will turn<br />

on solid. If this occurs, correct the leak(s) and then<br />

set all tires to the target pressure and conduct the<br />

learn sequence again.<br />

Note: The system is only pressurized for two minutes following<br />

the attempted target learn. A leak will only be<br />

audible during this time.<br />

27


System Set-up<br />

Troubleshooting Learn Mode<br />

Several faults may cause the system not to learn the target.<br />

The following is a list of the most common occurrences.<br />

CAUTION: Use of a battery charger as the power supply<br />

may result in the system not functioning properly.<br />

Condition Possible Causes<br />

Lamp does not illuminate during power-up<br />

System remains in learn mode (Lamp flashes once every<br />

10 seconds)<br />

The lamp remains illuminated after the learn mode<br />

The system reads the tire pressure low<br />

Poor electrical connection, power below 9 volts, or burned out lamp<br />

Supply pressure is below 90 psi minimum<br />

A fault has occurred, refer to the blink code diagnostics or PC tool<br />

Air leaks, supply pressure too low, air line leaks, kinked or restricted<br />

supply line, or not plumbed per installation guidelines.<br />

Service Tool Method<br />

When using a PC or other supported service tool connected to<br />

the diagnostic port, follow the instructions included with the<br />

service tool.<br />

1. Apply 12 volt power to the trailer at the SAE J560<br />

connector.<br />

2. Enter the desired cold temperature tire pressure target<br />

into the ECU using the service tool and then<br />

remove power from the trailer.<br />

3. Reapply power and verify proper operation by selecting<br />

the manual operation mode in the Diagnostic<br />

Tool. Select pressure check and hold to check for<br />

leaks in the system.<br />

4. Watch for a drop in manifold pressure and listen for<br />

any audible leaks. If a leak is found, take corrective<br />

actions.<br />

5. If any faults have occurred during programming,<br />

clear all historical faults.<br />

System Set-up<br />

28


Troubleshooting<br />

Troubleshooting<br />

Troubleshooting Introduction<br />

The system identifies certain conditions and reports them via<br />

the trailer mounted warning lamp. In normal mode, the operator<br />

is informed whenever a tire is low enough to require service<br />

(typically 10%) or there is a fault in the system. For<br />

troubleshooting, additional information can be obtained either<br />

through blink-codes, or through use of service tools connected<br />

to the diagnostic connector.<br />

Blink Code Diagnostics<br />

Blink codes provide a means to determine what service codes<br />

exist without requiring any special tools. Apply power to system.<br />

To activate blink-codes, remove the weather cap from the<br />

diagnostic connector and electrically short pins "A" and "E"<br />

together until warning lamp changes state (approximately 5<br />

seconds). The pins to be shorted can be easily identified by<br />

the interconnecting slot in the shell, allowing convenient use<br />

of a coin or screwdriver tip to short the pins together. The<br />

warning lamp will turn on for 5 seconds upon entering the<br />

diagnostics mode, and will then flash a 2 digit service code.<br />

See the Warning Lamp Status Chart (Diagnostic Mode) for<br />

service code descriptions. Should more than one fault exist,<br />

there will be a 2 second pause between each flash sequence.<br />

If no faults are present or all the faults have been flashed, the<br />

system will flash a code 5-5.<br />

It is not necessary to short the diagnostic connector to obtain<br />

blink-codes when a service tool is used for troubleshooting.<br />

Follow the instructions included with the service tool.<br />

Blink Code Description<br />

Low Tire - Low tire pressure is indicated by a solid warning<br />

lamp. This service code will be set when one or more tire<br />

pressures drops a predetermined amount (typically 10%)<br />

below the target pressure. Inspect the tires to verify there is<br />

no tire damage. This fault can also be set as a result of a large<br />

line leak.<br />

System Fault - A system fault is set when a problem has been<br />

detected with the system. System service codes include<br />

memory reset, internal atmospheric sensor fault, or other<br />

pneumatic faults.<br />

Code 5-5 - This indicates the end of the service code list. If<br />

this is the only code received, then no service codes exist.<br />

Short Pins A and E Until Lamp<br />

Changes State (approximately 5 seconds)<br />

and Release to Access Blink Codes<br />

F B<br />

A<br />

E<br />

D<br />

C<br />

218UX034<br />

29


Troubleshooting<br />

Warning Lamp Status Chart (Normal<br />

Mode)<br />

Warning Lamp Status<br />

ECU in Normal Operating Mode<br />

System Condition<br />

Troubleshooting<br />

2 seconds ON at power-up* Normal operation (lamp check)<br />

Multiple flashes at power-up<br />

Continuous ON<br />

Active service code stored in ECU<br />

Low pressure in one or more tires<br />

Substantial air line leak<br />

Failure to depressurize the system<br />

No tire pressure target programmed (new ECU)<br />

Note: If the vehicle is powered and the supply air tank pressure is not at a minimum of 90 psi the system will not check or<br />

inflate the tires.<br />

*Note: The maintenance system utilizes the trailer's blue circuit for power. Some early model tractors do not power this circuit<br />

resulting in no power to the system.<br />

218UX023<br />

Warning Lamp Status Chart (Program<br />

Mode)<br />

ECU in Learn Mode<br />

Warning Lamp Status<br />

System Condition<br />

2 seconds ON twice when learn mode is selected Acknowledges that the learn mode has been<br />

activated<br />

1/2 second ON every 10 seconds<br />

Learn mode active - inadequate supply<br />

pressure to determine tire pressure target<br />

5 seconds ON, then multiple 1/2 second ON Acknowledges that a tire pressure target has<br />

flashes separated by 2 seconds OFF<br />

been determined by the ECU (each series of<br />

flashes represents 1 digit of new tire pressure<br />

target - example: 9 flashes, 2 sec. pause,<br />

5 flashes = target of 95 psig) Note: a zero is<br />

indicated by 10 flashes.<br />

218UX024<br />

30


Troubleshooting<br />

ECU in Diagnostic Mode (Blink Codes)*<br />

1st Digit 2nd Digit Description Possible Causes<br />

1 Leaking tire** Repeated inflates of a slow leak in tire or wheel<br />

assembly<br />

1<br />

2 Tire pressure low** Tire pressure more than 10% (typical) below target pressure;<br />

Significant air line leak or hose disconnected<br />

4<br />

5<br />

2 1<br />

Line leak<br />

Supply pressure<br />

low<br />

6 Maximum inflate time<br />

Air line is leaking between manifold and wheel-end;<br />

Very low tire<br />

Supply pressure inadequate to check tire pressures for greater<br />

than 24 hours<br />

System has been continuously inflating for over 2 hours but<br />

has not reached target<br />

7 System vent failure System unable to depressurize air lines. Check valve or manifold<br />

contamination. Pressure sensor ground wire disconnected.<br />

Pressure target out of<br />

range<br />

Programmed tire pressure target is outside allowable<br />

range (80-125 psig)<br />

1 ECU memory failure Faulty ECU (possible lost historical data)<br />

Atmospheric reading System defaults to 14.5 psi reference pressure<br />

2<br />

failure<br />

4<br />

3 No target pressure New installation-target pressure must be programmed<br />

4 No sensor signal Pressure sensor wiring disconnected or faulty<br />

5 Low voltage Trailer supply voltage too low for normal operation<br />

End of service code<br />

5 5<br />

listing<br />

1 Lamp-open circuit Disconnected or faulty wire harness, lamp or ECU<br />

2 Lamp-short circuit Faulty wire harness, lamp or ECU<br />

6 3 Solenoid 1-open circuit Disconnected or faulty wire harness, solenoid or ECU<br />

4 Solenoid 1-short circuit Faulty wire harness, solenoid or ECU<br />

5 Solenoid 2-open circuit Disconnected or faulty wire harness, solenoid or ECU<br />

6 Solenoid-2-short circuit Faulty wire harness, solenoid or ECU<br />

*Note: The warning lamp will turn ON continuously for 5 seconds when entering the diagnostic mode.<br />

The lamp will then flash any active two-digit blink codes.<br />

**Note: Following repair of the leaking tire, check all other tires manually for correct tire pressure. If the<br />

system has been maintaining pressure in a leaking tire for an extended period of time, the other tires<br />

may now be slightly above target pressure.<br />

31


Glossary<br />

Glossary<br />

Spicer®<br />

Tire Maintenance System<br />

Manifold<br />

Electronic Control Unit (ECU)<br />

Rotary Joint<br />

Target Pressure<br />

A system that maintains the pressure of selected tires and activates a warning to alert the<br />

vehicle operator if the pressure drops by more than 10%.<br />

Receives signals from the Electronic Control Unit (ECU) and directs air flow to either<br />

maintain or inflate the tires to keep them at their target pressure.<br />

The ECU is programmed with the target pressure and directs the manifold to supply air to<br />

the tires when needed. A significant drop in tire pressure causes the ECU to light the<br />

warning lamp.<br />

Rotary air seal assembly that allows air transfer from wheel end to tire(s) while vehicle is<br />

in motion. Only pressurized while system is checking tire pressure or inflating.<br />

The desired cold temperature tire pressure for the tires.<br />

Glossary<br />

32


Appendix<br />

Tire Maintenance System Performance at 100 psig<br />

AMBIENT TEMPERATURE AT WHICH THE TIRE PRESSURE IS SET TO THE TARGET PRESSURE<br />

-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120<br />

-40 100 97 95 92 90 88 86 84 82 80 78 76 74 73 71 70 68<br />

-30 103 100 97 95 93 90 88 86 84 82 80 78 77 75 73 72 70<br />

-20 105 103 100 97 95 93 90 88 86 84 82 81 79 77 75 74 72<br />

-10 108 105 103 100 98 95 93 91 89 86 85 83 81 79 77 76 74<br />

0 111 108 105 103 100 98 95 93 91 89 87 85 83 81 79 78 76<br />

10 114 111 108 105 102 100 98 95 93 91 89 87 85 83 82 80 78<br />

20 116 113 110 108 105 102 100 98 95 93 91 89 87 85 84 82 80<br />

30 119 116 113 110 107 105 102 100 98 95 93 91 89 87 86 84 82<br />

40 122 119 116 113 110 107 105 102 100 98 96 94 91 90 88 86 84<br />

50 125 121 118 115 112 110 107 105 102 100 98 96 94 92 90 88 86<br />

60 127 124 121 118 115 112 110 107 150 102 100 98 96 94 92 90 88<br />

70 130 127 123 120 117 115 112 109 107 105 102 100 98 96 94 92 90<br />

80 133 129 126 123 120 117 114 112 109 107 104 102 100 98 96 94 92<br />

90 136 132 129 126 122 120 117 114 111 109 107 104 102 100 98 96 94<br />

100 138 135 131 128 125 122 119 116 114 111 109 106 104 102 100 98 96<br />

110 141 137 134 131 127 124 122 119 116 114 111 109 106 104 102 100 98<br />

120 144 140 137 133 130 127 124 121 118 116 113 111 109 106 104 102 100<br />

Target Pressure: 100 psi<br />

218UX019<br />

120<br />

TIRE PRESSURE VS. TEMPERATURE<br />

110<br />

100<br />

90<br />

80<br />

Drops to 90 psig at 20˚ F:<br />

Warning lamp goes on<br />

Set 100 PSIG at 70˚ F<br />

Pressure (PSIG)<br />

70<br />

60<br />

50<br />

40<br />

30<br />

20<br />

10<br />

0<br />

-40°<br />

-30° -20° -10° 0° 10° 20° 30° 40° 50° 60° 70° 80° 90° 100° 110° 120°<br />

Temperature (F)<br />

218UX018<br />

33


Appendix<br />

Tire Maintenance System Schematic<br />

Additional Harness Required for Non-ABS Trailers<br />

E<br />

B<br />

A<br />

C<br />

D<br />

A<br />

B<br />

C<br />

D<br />

E<br />

To<br />

Maintanance<br />

System Harness<br />

Power<br />

Ground<br />

J560 Blue<br />

J560 White<br />

1<br />

7<br />

SAE J560 Trailer Connector<br />

(Viewed from Back Side)<br />

E<br />

C B<br />

D A<br />

From<br />

SAE J560<br />

A<br />

B<br />

C<br />

D<br />

E<br />

Note: All connector views are shown<br />

looking into the harness connector<br />

unless otherwise noted.<br />

Note: Older systems have pressure<br />

sensor ground (Pin A) spliced to<br />

harness ground (ECU Pin 7) and not<br />

connected to ECU Pin 2.<br />

Female<br />

Bullet<br />

Connector<br />

Stop Light Power<br />

Power<br />

ABS Trailer Warning Lamp<br />

Ground<br />

OEM Supplied<br />

Trailer-Mounted<br />

Warning Light<br />

Ground<br />

Supply<br />

Signal<br />

A<br />

B<br />

C<br />

D<br />

E<br />

A<br />

B<br />

C<br />

E<br />

B<br />

A<br />

To<br />

ABS ECU<br />

B<br />

C<br />

A<br />

C<br />

D<br />

Pressure<br />

Sensor<br />

Appendix<br />

Supply Solenoid<br />

Switched Ignition<br />

Control Solenoid<br />

A<br />

B<br />

C<br />

A<br />

B<br />

C<br />

1<br />

2<br />

3<br />

4<br />

5<br />

6<br />

ECU<br />

Connector<br />

12<br />

11<br />

10<br />

9<br />

8<br />

7<br />

1<br />

Pressure Sensor Supply<br />

Pressure Sensor Ground<br />

2<br />

Switched Ignition<br />

3<br />

SAE J1587 (+)<br />

4<br />

SAE J1587 (-)<br />

5<br />

Pressure Sensor Signal<br />

6<br />

Ground<br />

7<br />

Supply Solenoid<br />

8<br />

Spare Input<br />

9<br />

Optional<br />

Warning Lamp<br />

10<br />

Control Solenoid<br />

11<br />

Fault Output<br />

12<br />

Optional<br />

A<br />

B<br />

C<br />

D<br />

E<br />

F<br />

Manifold<br />

Solenoids<br />

F B<br />

E<br />

A<br />

D<br />

C<br />

Diagnostic<br />

Connector<br />

218UX001<br />

34


Appendix<br />

Connector Chart<br />

Component<br />

Harness Connector<br />

Shell<br />

Harness Terminal Wire Seal Lock Plug<br />

Electronic Control Unit Deutsch Socket Deutsch Deutsch<br />

DTM06-12SA Deutsch WM-12S 0413-204-2005<br />

1062-20-0122<br />

__<br />

Warning Lamp<br />

Female<br />

Bullet Connector<br />

__ __ __ __<br />

To SAE J560<br />

__ __ __ __ __<br />

To ABS<br />

__ __ __ __ __<br />

Service Tool Data Link Deutsch Deutsch<br />

Deutsch 0460-204-12141<br />

114017<br />

HD10-6-12P-L<br />

__<br />

__<br />

Manifold Solenoids<br />

Packard<br />

12110293<br />

Packard<br />

12048074<br />

__<br />

Secondary Lock<br />

Packard<br />

12052845<br />

__<br />

Manifold<br />

Pressure Sensor<br />

Packard<br />

12065287<br />

Packard<br />

12103881<br />

__<br />

__<br />

__<br />

218UX020<br />

35


For <strong>Dana</strong> spec‘ing Aftermarket or service Group assistance, call 1.800.621.8084 or visit our website at www.spicerparts.com<br />

PO Box 321<br />

Toledo, Ohio 43697-0321<br />

<strong>Dana</strong> Warehouse Commercial Distributor: Vehicle 1.800.621.8084<br />

Products Group<br />

3939 OE Technology Dealers: 1.877.777.5360<br />

Drive<br />

Maumee, Ohio, USA 43537<br />

www.spicerparts.com<br />

www.dana.com<br />

AXIG-0025 Printed in U.S.A.<br />

Copyright <strong>Dana</strong> Limited, 2012.<br />

All rights reserved. <strong>Dana</strong> Limited.

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