PressureGuard Installation Manual - Fleet Air

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Installation Index PressureGuard System Overview ........................................................ 2 Tools and Equipment ........................................................................... 3 Kit Contents .......................................................................................... 4 Tandem Axle Assembly Drawing ........................................................ 6 Step 1 - Pressure Protection Valve (PPV) ............................................ 7 Step 2 - Pressure Regulator Assembly ................................................ 10 Step 3 - Wheel Preparation ................................................................. 11 Step 4 - Axle Preparation .................................................................... 14 Step 5 - Axle Air Line Installation ....................................................... 17 Step 6 - Axle Vent Installation ............................................................ 20 Step 7 - Spindle Plug Installation ....................................................... 22 Step 8 - Connecting Air Lines to Regulator Assembly ...................... 25 Block Diagram - Air Flow Hook Up .................................................... 26 Step 9 - Hubcap / Rotating Shaft Installation .................................... 27 Step 10 - Connecting Air Hoses to the Tires ...................................... 32 Step 11 - Low Pressure Warning Light Installation ........................... 33 Block Diagram-Electrical Schematic ................................................... 36 Step 12 - Pressurize System and Check for Leaks .............................. 37 Troubleshooting Guide ....................................................................... 38 1
PressureGuard System Overview Warning! Before proceeding with the installation: Wear approved eye protection at all times. Chock tires to prevent the trailer from moving during installation. Stay clear and release all positive pressure from the air brake tank. The PressureGuard System routes air from the trailer’s air brake tank through the axle, by way of tubing, to the hubcaps and then to the tires. The system is designed to maintain tire pressure at a factory preset level. • If a sudden drop in air pressure occurs (below 70 PSI), the Pressure Protection Valve will shut off the system to prevent air loss from the air brake tank. • Check valves incorporated in the braided air hoses maintain air pressure in the remaining tires in the event of a tire blowout or air leak. • A trailer mounted warning light will illuminate to alert the driver of a significant air leak. (Below 80 PSI or 100 PSI depending on system pressure setting.) • Aluminum hubcaps on oil applications feature a see- through Polycarbonate window for easy checking of the oil level and a fill plug for fluid adjustment. • The trailers wheel ends are vented through spindle plugs into the axle and out the top of the axles, not through the hubcaps. • The hardened rotating shafts, bushings and seals are warranted for 3 years or 500,000 miles providing years of maintenance free service. The major components of the system consist of: Pressure protection valve Pressure regulator and pressure switch Spindle plugs with bushings and seals Hubcaps with rotating shafts Braided stainless steel air hoses Pressure relieving axle vent on top of the axle Low pressure warning light Air ine, fittings, and necessary installation hardware 2
Page 1: PRESSURE UARD T I R E I N F L AT I
Page 5 and 6: Item # Description 1 2 3 4 5 6 7 8
Page 8 and 9: Pressure Protection Valve Step 1 -
Page 10 and 11: 1-5 Install the 1/4” Tube x 1/4
Page 12 and 13: Wheel End Preparation Step 3 - Whee
Page 14 and 15: 3-5 Repeat steps 3-1 through 3-4 on
Page 16 and 17: 4-2 Tap each hole using a 1/8” -2
Page 18 and 19: Axle Air Line Installation Step 5 -
Page 20 and 21: 5-5 Slide the Axle Air Line Fitting
Page 22 and 23: 6-3 Screw in and tighten the Axle V
Page 24 and 25: 7-3 Push the tubing into the Spindl
Page 26 and 27: Connecting Air Lines to Regulator A
Page 28: Hubcap Installation / Rotating Shaf
Page 31 and 32: 9-2 Install the provided gasket ont
Page 33 and 34: Connecting Air Hoses to the Tires S
Page 35 and 36: 11-4 Connect the two wires of the W
Page 37 and 38: Pressure Switch Connector (+) ( -)
Page 39 and 40: System Troubleshooting Guide Air le
Page 41 and 42: No air flow through regulator. Prob
Page 43 and 44: Warning light on. Problem: 1. Syste

PressureGuard Installation Manual - Fleet Air

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