PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND POSSIBLY REPLACING THE REAR AXLE PINION SHAFT ON CERTAIN 980L, 980M, AND 982M WHEEL LOADERS
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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 must be administered as soon as possible. When reporting the repair, use "PI33161" as the Part Number and "7751" as the Group Number, "56" as the Warranty Claim Description Code and "T" as the SIMS Description code. Exception: If the repair is done after failure, use "PI33161" as the Part Number, "7751" as the Group Number, "96" as the Warranty Claim Description Code, and "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.
This Revised Service Letter replaces the 03Apr2020 (Revised 08Jul2020) Service Letter. Changes have been made to the Title, Problem, Affected Product, and Example Copy of Owner Notification to include certain 980L machines.
|The existing rear 356-4199 Axle Pinion may fail due to a heat treat issue on certain 980L, 980M, and 982M Wheel Loaders. If the existing pinion fails, it can cause secondary damage to the bevel gear and bearings in the immediate area.|
|980L||D8Z20350, 20354-20357, 20359-20366, 20375-20377|
XDJ01139-01141, 1144, 1152, 1154-1162, 1164-1171, 1174-1176, 1178-1179, 1182-1185, 1187-1192, 1194, 1196-1197
XDL00619-00621, 624, 626-629, 631-637, 639-644, 647, 652-653, 655, 658-660
|2||5J1086||SEAL-O RING (After Failure Only)|
|20||5P8248||WASHER-HARD (After Failure Only) - As Required|
|1||5V5669||SHIM-PACK (After Failure Only) - As Required|
|1||6K5528||CUP-ROLLER BRG (After Failure Only)|
|1||6K5529||CONE-ROLLER BRG (After Failure Only)|
|1||6W4750||NUT-STAKE LOCK (After Failure Only)|
|12||7X2476||BOLT-HEX HEAD (After Failure Only) - As Required|
|1||8E7926||BEARING-CONE (After Failure Only)|
|1||8E7927||BEARING-CUP (After Failure Only)|
|1||8F5900||SEAL-O-RING (After Failure Only)|
|12||8T4001||NUT-HEX (After Failure Only) - As Required|
|16||8T4167||WASHER-HARD (After Failure Only) - As Required|
|1||9F1399||SEAL-O RING (After Failure Only)|
|1||1080058||SHIM-PACK (After Failure Only) - As Required|
|1||1334292||SEAL-LIP TYPE (After Failure Only)|
|4||1607183||WASHER (After Failure Only) - As Required|
|18||1608510||BOLT-HEX HEAD (After Failure Only) - As Required|
|4||1782991||BOLT-HEX HEAD (After Failure Only) - As Required|
|1||2338628||SHIM-PACK (After Failure Only)|
|8||2346681||BOLT-12 POINT HD - As Required|
|6||2673507||WASHER-HARD (After Failure Only) - As Required|
|2||2949835||SPACER (After Failure Only) - As Required|
|1||3564199||SHAFT-PINION (After Failure Only)|
|In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 43% 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.
|The rear axle pinion shaft will need to be inspected. There are markings on the end of the pinion shaft that will include the lot number. Refer to Image1. The lot number will be a two-digit number starting with a 4 or a 5.
If the lot is "51" or "52" the pinion shaft will need to be replaced with a new 356-4199.
Rear Axle Pinion Shaft Inspection:
1. Drain approximately 5 Gal/20 L of oil from the center of the rear axle housing.
2. Remove the rear drive joint. Refer to Image1.
3. Remove the axle yoke by sliding it off the pinion shaft.
4. Inspect the end of the pinion shaft.
- If the pinion shaft does NOT have a lot number of "51" or "52" no action is needed, lubricate the yoke hub, and slide it back into the splines. Install the drive joint with new 234-6681 Bolts and tighten to a specified torque of 150 +/- 15 N.m using an "X" pattern. Refill the axle to the proper oil level.
- If the lot number "51" or "52" is identified on the end of the Pinion shaft, the pinion shaft will need to be replaced. Take a picture of the end of the pinion shaft and up-load it into SIMS. Refer to Image2. Complete the Rear Axle Pinion Shaft Replacement.
Rear Axle Pinion Shaft Replacement:
Please follow the Disassembly and Assembly manuals to remove existing parts and for installation of new parts.
980L Machines: Refer to M0075593, Disassembly and Assembly, Axle/Differential Remove/Install procedures, for additional information.
980M/982M Machines: Refer to UENR3097, Disassembly and Assembly, Axle/Differential Remove/Install procedures, for additional information.
Once the axle is removed and the differential carrier is removed, only the pinion shaft and pinion bearings need to be replaced. The bevel gear does not need to be disassembled on a before failure repair.
Refer to UENR3097, Disassembly and Assembly, "Differential and Bevel Gear ? Assemble" to check the gear backlash and gear tooth contact pattern and adjust as needed.
|Owners in the following countries will receive the attached Owner Notification:
SERVICE CLAIM ALLOWANCES
|NOTE: This is a 2.0-hour job|
|Note: 2.0 hours is allowed for Rear Axle Inspection of the end of the pinion shaft.|
Note: 84 Liters of axle oil is allowed.
Note: For pinion shafts that are identified to have a lot number of "51" or "52", an additional 20.0 hours is allowed to replace the pinion shaft for a Before Failure repair.
Note: For pinion shafts that are identified to have a lot number of "51" or "52", an additional 40.0 hours is allowed for an After Failure repair.
Reasonable Travel Time and Mileage will be allowed per regional PIP guidelines.
|Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.|
|MAKE EVERY EFFORT TO COMPLETE THIS PROGRAM AS SOON AS POSSIBLE.|
|EXAMPLE COPY OF OWNER NOTIFIAVSION
3240 Arrow Drive
Anywhere, YZ 99999
PRIORITY - PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND POSSIBLY REPLACING THE REAR AXLE PINION SHAFT
MODELS INVOLVED - CERTAIN 980L, 980M, AND 982M WHEEL LOADERS
Dear Cat Product Owner:
The existing rear axle pinion shaft needs to be inspected on the products listed below. The existing rear axle pinion shaft may fail prematurely. You will not be charged for the service performed.
Contact your local Cat dealer immediately to schedule this service. The dealer will advise you of the time required to complete this service.
If you are no longer the owner of this product(s), please contact your local Cat dealer so that our records can be updated. Please refer the dealer to their Service Letter dated 03Apr2020 when scheduling this service.
We regret the inconvenience this may cause you, and urge you to have this service performed as soon as possible to prevent unscheduled downtime.
Attached to 03Apr2020 Service Letter