PRODUCT SUPPORT PROGRAM FOR REPLACING THE TRACTOR ENGINE MOUNTS ON CERTAIN 631G, 631G OEM, AND 637G WHEEL TRACTOR SCRAPERS Caterpillar

PRODUCT SUPPORT PROGRAM FOR REPLACING THE TRACTOR ENGINE MOUNTS ON CERTAIN 631G, 631G OEM, AND 637G WHEEL TRACTOR SCRAPERS

Usage:

REBE6056-01

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29Apr2010

(Revised 13Jul2010)

U-151

A-118

D-132

O-139

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*Before/After*	PRODUCT SUPPORT PROGRAM FOR REPLACING THE TRACTOR ENGINE MOUNTS ON CERTAIN 631G, 631G OEM, AND 637G WHEEL TRACTOR SCRAPERS
1154 1152 1153		PS43077

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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 "PS43077" 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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NOTE:	This Revised Service Letter replaces the 29Apr2010 Service Letter. Changes have been made to the Action Required.

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TERMINATION DATE

30Apr2012

PROBLEM

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The existing engine mount can fail on certain 631G, 631G OEM and 637G Wheel Tractor Scrapers. If the existing engine mount fails it can cause on overload on the drive shaft carrier bearing.

AFFECTED PRODUCT

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Model	Identification Number
631G	AWK00197-00198, 200-226, 229-230, 232-233, 235-265, 268-315 CLR00250-00288, 400-417, 419-474, 476-497, 500-516, 518-542, 544-553, 555-564, 566-583, 585-588, 590-592 DFA00125-00129, 131-145, 147-173, 175-180, 182-226, 228-229, 231-232, 234-236, 238, 240-241, 243-245, 247-249, 251-252, 254, 256-283, 285-303, 306-309, 311-312, 314-330, 332-348, 350-354, 356-357, 359-369
631G OEM	DXE00100-00112 M1W00101-00117, 119, 122-124
637G	AXT00100-00101, 300-337 CEH00222-00259, 350-424 DFJ00225-00421
9C BULLDOZER	05A13204-13207, 13560-13561
CIPI	0EM00698, 1055, 1106-1107, 1354-1355, 1366, 1606, 1614, 1616

PARTS NEEDED

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Qty	Part Number	Description
2	8N0111	MOUNT AS
2	9W9930	MOUNT AS
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 16% 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 the Service Manual if/as required.

Replace engine mounts as follows.
1) Move machine to safe area and secure.
- lower bowl to ground
- set brakes
- shut off main disconnect switch
2) Remove main drive shaft from back of engine.
3) Remove rear hood.
4) Remove top caps from the engine mounts (front and rear)
5) Remove the rear belly pan.
6) Raise engine just enough to clear engine mount saddles.
7) Remove engine mount adapter from cab side of engine.
8) Swing engine to left side and remove hydraulic tank side engine mount.
9) Use a cut off wheel to remove mounts from adapter.
10) Install new mount (8N-0111) to each adapter.
11) Install mount to hydraulic tank side of engine. Tighten bolts to correct torque.
12) Install mount to cab side of engine. Tighten bolts to correct torque.
13) Set engine back into mount saddles.
14) Raise front of engine enough to slide in new front mounts (9W-9930). Note; it may be required to remove fan hub bolts to gain necessary clearance to install new front mounts.
15) Secure front of engine. Tighten bolts to correct torque.
16) Inspect condition of driveshaft carrier bearing. Replace bearings as required.
17) Check drive shaft alignment. Shim as required.
18) Secure caps on rear engine mounts. Tighten bolts to correct torque.
19) Connect air filter hose.
20) Install rear hood.
21 Install drive shaft.
22) Install rear belly pan.
23) Return machine to service.

Torque values for hardware
3/8"-16 47 +/- 9 Nm (35 +/- 7 ft-lb)
1/2"-13 105 +/- 20 Nm (78 +/- 15 ft-lb)
5/8"-11 215 +/- 40 Nm (160 +/- 30 ft-lb)
3/4"-10 370 +/- 50 Nm (270 +/- 35 ft-lb)
7/8"-9 620 +/- 80 Nm (460 +/- 60 ft-lb)

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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%
0-6000 hrs, 0-60 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%
6001-10000 hrs, 61-96 mo	33.0%	50.0%	0.0%	0.0%	50.0%	50.0%

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NOTE: This is a 8.0-hour job
Up to an additional 12 hours of labor will be allowed in an after failure repair to cover resultant damage to the driveshaft carrier bearing.

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