PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND POSSIBLY REPLACING THE REAR AXLE PINION SHAFT ON CERTAIN 980L, 980M, AND 982M WHEEL LOADERS Caterpillar

PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND POSSIBLY REPLACING THE REAR AXLE PINION SHAFT ON CERTAIN 980L, 980M, AND 982M WHEEL LOADERS [UEBE0520]

POWER TRAIN

DIFFERENTIAL & BEVEL GEAR GP

PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND POSSIBLY REPLACING THE REAR AXLE PINION SHAFT ON CERTAIN 980L, 980M, AND 982M WHEEL LOADERS

UEBE0520-02

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03Apr2020

(Revised 20Aug2020)

U-182

A-140

D-168

O-165

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Priority	PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND POSSIBLY REPLACING THE REAR AXLE PINION SHAFT ON CERTAIN 980L, 980M, AND 982M WHEEL LOADERS
3254 3256 3258		PI33161

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NOTE:

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.

NOTE:

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.

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NOTE:

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.

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NOTE:	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.

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COMPLETION DATE	TERMINATION DATE
31Oct2020	30Apr2021

PROBLEM

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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.

AFFECTED PRODUCT

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Model	Identification Number
980L	D8Z20350, 20354-20357, 20359-20366, 20375-20377
980M	WW300622 XDJ01139-01141, 1144, 1152, 1154-1162, 1164-1171, 1174-1176, 1178-1179, 1182-1185, 1187-1192, 1194, 1196-1197
982M	WMD00532 XDL00619-00621, 624, 626-629, 631-637, 639-644, 647, 652-653, 655, 658-660

PARTS NEEDED

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Qty	Part Number	Description
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.

ACTION REQUIRED

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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.

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Image1

Image2

OWNER NOTIFIAVSION

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Owners in the following countries will receive the attached Owner Notification:
US
Canada

SERVICE CLAIM ALLOWANCES

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AVSpare		Dealer Suggested		Customer Suggested
Parts %	Labor Hrs%	Parts %	Labor Hrs%	Parts %	Labor Hrs%
100%	100%	0%	0%	0%	0%

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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.

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PARTS DISPOSITION

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Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.

MAKE EVERY EFFORT TO COMPLETE THIS PROGRAM AS SOON AS POSSIBLE.

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EXAMPLE COPY OF OWNER NOTIFIAVSION

XYZ Corporation
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.

AVSpare Inc.

Identification #(s)

Attached to 03Apr2020 Service Letter