PRODUCT SUPPORT PROGRAM FOR REPLACING THE REAR PUMP DRIVE 483-2035 UPPER IDLER SHAFT BOLT ON CERTAIN 994K WHEEL LOADERS Caterpillar

PRODUCT SUPPORT PROGRAM FOR REPLACING THE REAR PUMP DRIVE 483-2035 UPPER IDLER SHAFT BOLT ON CERTAIN 994K WHEEL LOADERS

Usage:

TEBE8454-00

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21Dec2018

U-748

A-542

D-659

O-651

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Before/After	PRODUCT SUPPORT PROGRAM FOR REPLACING THE REAR PUMP DRIVE 4832035/">483-2035 UPPER IDLER SHAFT BOLT ON CERTAIN 994K WHEEL LOADERS
3108		PS46099

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NOTE:

Caterpillar’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 Caterpillar.

NOTE:

This Program must be administered either before or after failure. In either case the decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS46099" as the Part Number and "7755" as the Group Number. If administered before failure, use "56" as the Warranty Claim Description Code and "T" as the SIMS Description code. If administered after failure, use "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 Caterpillar product analyst.

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TERMINATION DATE

31Dec2020

PROBLEM

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The existing rear pump drive 4832035/">483-2035 Upper Idler Shaft Bolt can fail on certain 994K Wheel Loaders. If the existing bolt fails, it will allow oil to leak out of the upper idler shaft.

AFFECTED PRODUCT

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Model	Identification Number
994K	MM900301-00311 MRK00201-00204, 312-324 SMX00201-00204

PARTS NEEDED

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Qty	Part Number	Description
1	6V6560	SEAL-O-RING
1	7X3391	WASHER-HARD
1	8S5655	SEAL-O-RING (After Failure Only)
1	4832035	BOLT-HEX HEAD
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 15% 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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Refer to M0099883, Service Magazine, "An Improved Rear Pump Drive bolt used on Certain 994K wheel Loaders", to complete this Rework Procedure.

BEFORE FAILURE:

1. Remove the existing 4832035/">483-2035 Bolt from the upper idler shaft. Refer to Image1.

2. Install a new 4832035/">483-2035 Bolt (black in color), O-ring seal, and washer into the idler shaft. Tighten the bolt to a specified torque of 100 +/- 10 N.m.

NOTE: Do not over tighten the bolt. Over tightening will lead to early failure of the bolt.

AFTER FAILURE:

1. Remove the remaining portion of the bolt from the bore WITHOUT removing the upper idler shaft.

NOTE: Using bolt extractors or left handed drill bits, with extensions, can aid in the removal of the failed portion of the bolt. The upper idler shaft has a heavy press fit into the housing, so removing and installing it requires special procedures.

IMPORTANT: If the shaft is removed to obtain the failed portion of the bolt, the shaft must be frozen to -35 degrees Celsius (-30 degrees Fahrenheit) to reduce the press fit during installation. Once installed, the shaft must be allowed to warm to +/- 8 degrees Celsius or +/- 15 degrees Fahrenheit of room temperature before installing and tightening the bolt.

NOTE: IF the bolt is used to assist with the installation of the frozen idler shaft, the bolt should be removed. The bolt should not be reused. In this case,

2. Install a new 4832035/">483-2035 Bolt (black in color), and tightened to specification.

Refer to M0071310, Disassembly and Assembly, "Pump Drive - Rear", for additional information.

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Image1

SERVICE CLAIM ALLOWANCES

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Product smu/age whichever comes first	Caterpillar		Dealer Suggested		Customer Suggested
Product smu/age whichever comes first	Parts %	Labor Hrs%	Parts %	Labor Hrs%	Parts %	Labor Hrs%
0-10000 hrs, 0-36 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%
10001-20000 hrs, 37-54 mo	33.0%	50.0%	0.0%	0.0%	50.0%	50.0%