PRODUCT SUPPORT PROGRAM FOR REPLACING THE ENGINE DAMPER MOUNTING BOLTS ON CERTAIN 797F OFF-HIGHWAY TRUCKS Caterpillar

PRODUCT SUPPORT PROGRAM FOR REPLACING THE ENGINE DAMPER MOUNTING BOLTS ON CERTAIN 797F OFF-HIGHWAY TRUCKS

Usage:

TEBE0908-02

Show/hide table

25Feb2014

(Revised 23Apr2014)

N030
N061
N173
N184
N18B
N18C
N18D

Show/hide table

Containment - Before/After (Limited distribution)	PRODUCT SUPPORT PROGRAM FOR REPLACING THE ENGINE DAMPER MOUNTING BOLTS ON CERTAIN 797F OFF-HIGHWAY TRUCKS
7553 1205 7150		PS90365

Show/hide table

NOTE:

This Containment Program can be administered either before or after a failure occurs. In either case the decision whether to apply the Program is made by the dealer and service rep. Obtain the service reps Goodwill Approver Code before completing the repair. EAME dealers should use their standard Industry Group specific goodwill approval codes. The Goodwill Approver Code must be included when submitting the claim.

Show/hide table

NOTE:	When reporting the repair, use "PS90365" as the Part Number and "7777" as the Group Number. If administered before failure, use "56" as Warranty Claim Description and "T" as the SIMS Description Code. If administered after failure, use "96" as Warranty Claim Description Code and use "Z" as the SIMS Description Code.
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.

Show/hide table


NOTE:	This Revised Service Letter replaces the 25Feb2014 (Revised 13Mar2014) Service Letter. Changes have been made to the Affected Product.

Show/hide table

TERMINATION DATE

29Feb2016

PROBLEM

Show/hide table

The existing damper mounting bolts can fail on certain 797F Off-Highway Trucks. The damper mounting bolts typically fail in the counterbore locations of the 360-1190 Spacer Plate. If the existing engine damper mounting bolts fail it can cause excessive downtime. In addition, the existing damper guard mounts can wear out prematurely.

AFFECTED PRODUCT

Show/hide table

Model	Identification Number
797F	LAJ00142, 144, 200-203, 227-228, 251-253, 262, 264, 266-267, 287, 308, 311-314, 317, 319-322, 327-328, 341, 446, 458-461, 464-466, 476-477

PARTS NEEDED

Show/hide table

Qty	Part Number	Description
4	1P7115	MOUNT AS
4	2S6160	WASHER-HARD
4	2Y5829	NUT-HEX
4	3E4353	WASHER-HARD
4	6V5843	BOLT-HEX HEAD
16	1485379	SPACER
4	2747709	BOLT
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 32% 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

Show/hide table

At a scheduled repair, perform the attached Rework Procedure.

Show/hide table

SERVICE CLAIM ALLOWANCES

Show/hide table

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%
0-18000 hrs, 0-48 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%

Show/hide table

NOTE: This is a 4.0-hour job
This program may only be applied one time per machine engine.

Show/hide table

PARTS DISPOSITION

Show/hide table

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

Rework Procedure

Show/hide table

1.) Remove the Vibration Damper Guard assembly.

Image1.1.1

2.) Remove and replace failed damper mounting bolts, along with the remaining bolts in the counterbore locations on the 360-1190 Spacer Plate. The remaining bolts not in the counter-bore locations are to be reused if the bolts meet general reuse and salvage guidelines.

Refer to Reuse and Salvage Guidelines, SEBF8301, "Inspection and Reuse of Critical Fasteners Used in All Engines" for bolt specifications.

Image1.2.1

3.) Support the damper with an approved lifting device prior to removing the remaining damper mounting bolts. Reference KENR8384 for the correct procedure to remove the engine damper. Two 323-4712 Guide Bolts can be used 180 degrees apart to support the damper during rework.

Note: The vibration damper is fed with engine oil. Some engine oil will leak from the damper to crankshaft connection once the bolts are loosened.

Image1.3.1

4.) Remove the 360-1190 Spacer Plate and discard.

Image1.4.1

5.) Lubricate the bolt threads and the bottom of the bolt head with a Molysulfide based lubricant. Install 148-5379 Spacers on each 274-7709 Damper Bolt. Install bolts into damper.

Image1.5.1

6.) Starting at the 12 o'clock position and working clockwise, label the bolts from 1 through 16. Tighten damper bolts 1 through 16 in the following order to a value of 800 +/- 100 Nm, which is standard torque.
Tightening Sequence: 1-9-5-13-2-10-3-11-4-12-6-14-7-15-8-16

Image1.6.1

7.) Repeat the tightening procedure only for bolts 1, 9, 5, and 13, tightening to 800 +/- 100 Nm.

8.) Remove 2W-9710 damper guard vibration mount isolators and replace with 1P-7115 Grommet As. Replace mount hardware per the image below.
Note: The grommet assembly is installed through the welded plate with the head towards the outside of the guard. The new grommet is shorter than the original mount assembly.