Spicer Tandem Drive Axles Service Manual

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Ring Gear and Pinion Note: Ring gear and drive pinion are matched parts and must be replaced in sets. 1 - Part number 2 - Number of ring gear teeth 3 - Manufacturing numbers 4 - Matching gear set number 5 - Number of pinion teeth 6 - Date code 7 - Indicates genuine <strong>Spicer</strong> parts 8 - Heat code 3 85405 EATON 6-39 127381 JD77 86 1 7 SPICER General Information 7 5 SPICER 127428 1 41-8 8 8-41 17 G OF NL217 2 127 0H 4 L7038 8 6 3 3 6 G L7038 4
Failure Analysis Failure analysis is the process of determining the original cause of a component failure in order to keep it from happening again. Too often, when a failed component is replaced without determining its cause, there will be a recurring failure. If a carrier housing is opened, revealing a ring gear with a broken tooth, it is not enough to settle on the broken tooth as the cause of the carrier failure. Other parts of the carrier must be examined. For a thorough understanding of the failure and possible insight into related problems, the technician needs to observe the overall condition of the vehicle. No one benefits when a failed component goes on the junk pile with the cause unknown. Nothing is more disturbing to a customer than a repeat failure. Systematically analyzing a failure to prevent a repeat occurrence assures quality service by avoiding unnecessary downtime and further expense to the customer. The true cause of a failure can be better determined by knowing what to look for, determining how a piece of the equipment was running, and learning about previous problems. In the case of a rebuilt rear axle, mismatched gears may have been installed. The more successful shops prevent repeat equipment failures by developing good failure analysis practices. Knowing how to diagnose the cause of a premature failure is one of the prerequisites of a good heavy-equipment technician. How to Diagnose a Failure The following five steps are an effective approach to good failure diagnostics. 1. Document the problem. 2. Make a preliminary investigation. 3. Prepare the parts for inspection. 4. Find the cause of the failure. 5. Correct the cause of the problem. Inspection Document the Problem Here are some guidelines for starting to learn about a failure. Talk to the operator of the truck. Look at the service records. Find out when the truck was last serviced. Ask the following questions: In what type of service is the truck being used? Has this particular failure occurred before? How was the truck working prior to the failure? You need to be a good listener. Sometimes, insignificant or unrelated symptoms can point to the cause of the failure. Ask the following questions: Was the vehicle operating at normal temperatures? Were the gauges showing normal ranges of operation? Was there any unusual noise or vibration? After listening, review the previous repair and maintenance records. If there is more than one driver, talk to all of them and compare their observations for consistency with the service and maintenance records. Verify the chassis Vehicle Identification Number (VIN) number from the vehicle identification plate, as well as the mileage and hours on the vehicle. 4 Inspection
Page 1 and 2: Spicer ® Tandem Drive Axles Servic
Page 3 and 4: General Inspection General Informat
Page 5 and 6: Introduction ......................
Page 7: Model Identification Drive Axle 1 -
Page 11 and 12: Inspection Clean 1. Wash steel part
Page 13 and 14: Differential Carrier Assembly - Par
Page 15 and 16: Differential Carrier Assembly Insta
Page 17 and 18: Power Divider - Parts Exploded View
Page 19 and 20: 10. Remove the thrust washer and he
Page 21 and 22: Lube Manifold Disassembly 1. Discon
Page 23 and 24: Pump Assembly Use these instruction
Page 25 and 26: Helical Gear Bushing Replacement: a
Page 27 and 28: 17. A. For axles built before Augus
Page 29 and 30: 6. Mount the differential carrier i
Page 31 and 32: Failure to de-stake the pinion nut
Page 33 and 34: Drive Pinion Drive Pinion Overhaul
Page 35 and 36: 5. For Forward Carriers Only: Insta
Page 37 and 38: 14. With 5 tons of force on the pre
Page 39 and 40: CAUTION The stake must be deep enou
Page 41 and 42: Wheel Differential Disassembly Duri
Page 43 and 44: Wheel Differential Assembly IMPORTA
Page 45 and 46: Wheel Differential Assembly Set Bac
Page 47 and 48: 9. With a dial indicator, check the
Page 49 and 50: 21. When contact pattern is correct
Page 51 and 52: Adjust Ring Gear Position (Backlash
Page 53 and 54: Install and Adjust Wheel Differenti
Page 55 and 56: Remove Output Shaft Assembly Note:
Page 57 and 58: Output Shaft Assembly & Rear Cover
Page 59 and 60:
Measure Correct endplay for a new a
Page 61 and 62:
Guidelines for Reusing Yoke CAUTION
Page 63 and 64:
Housing Breather Dana has an axle b
Page 65 and 66:
Remove and Overhaul Wheel End Seal
Page 67 and 68:
Never tighten the inner nut for ali
Page 69 and 70:
Lubricate Wheel End CAUTION Before
Page 71 and 72:
General Lubrication Information The
Page 73 and 74:
Change Lube Drain Drain when the lu
Page 75 and 76:
Tandem Rear Axles Installation Angl
Page 77 and 78:
Theory of Operation Power Divider O
Page 79 and 80:
Operate Wheel Differential Assembly
Page 81 and 82:
Wheel Differential Lock The Dana Wh
Page 83 and 84:
Power Divider - Parts Exploded View
Page 85 and 86:
Parts Identification Rear Axle Pini
Page 87 and 88:
Parts Identification Housing and Ou
Page 89 and 90:
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Spicer Tandem Drive Axles Service Manual

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