After Failure Only
PRODUCT SUPPORT PROGRAM FOR REPAIRING CLUTCH 5 FAILURES ON CERTAIN 24 MOTOR GRADERS
AVSpare’s obligations under this Service Letter are subject to, and shall not apply in contravention of, the laws, rules, regulations, directives, ordinances, orders, or statutes of the United States, or of any other applicable jurisdiction, without recourse or liability with respect to AVSpare.
This Program can only be administered after a failure occurs. The decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS54301" as the Part Number and "7755" as the Group Number. Use "96" as the Warranty Claim Description Code and use "Z" as the SIMS Description Code.
The information supplied in this service letter may not be valid after the termination date of this program. Do not perform the work outlined in this Service Letter after the termination date without first contacting your AVSpare product analyst.
|The existing clutch 5 seal can fail on certain 24 Motor Graders. This issue should not affect transmission serial numbers WFR00389 and above.
If the existing seal fails it can be detected with the occurrence of Level 1 or Level 2 event codes listed in Image1.
If any of the event codes listed in Image1 are logged, additional troubleshooting may be necessary to determine if there is an internal hardware issue.
Typical failure modes:
1. Clutch 5 seal bore wear in the 539-0498 Rotation Housing Assembly in Image2
2. Seal fracture of the 488-1435 Seal Ring in Image3
Both failures may lead to a loss of clutch 5 pressure.
|8||9X8273||BOLT-12 POINT HD|
|4||2339748||DISC-FRICTION (After Failure, if needed)|
|6||2443114||VALVE GP-MDL -C|
|3||3708590||PLATE-CLUTCH (After Failure, if needed)|
|1||OILBULK||Trans (122 L/ 32.2 gal max ) See OMM|
|In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 1% of dealership population. This is an initial order recommendation only, and the ultimate responsibility for ordering the total number of parts needed to satisfy the program lies with the dealer.
|Refer to Troubleshooting, M0091472, Event Codes for details on what could cause event codes to be logged.
For transmission clutch troubleshooting, refer to Testing and Adjusting, M0090363, Transmission Pressures - Test and Adjust.
If transmission clutches withstand the pressure check, it should be safe to continue operation.
If transmission clutches fails the pressure check, check transmission suction screen for an additional check.
If clutch failure is confirmed, schedule transmission teardown and follow Disassembly and Assembly guide, M0089695.
SERVICE CLAIM ALLOWANCES
|NOTE: This is a 32.0-hour job|
|Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.|