PRODUCT SUPPORT PROGRAM FOR REPLACING LIFTER COVER BOLTS ON CERTAIN 797F OFF-HIGHWAY TRUCKS Caterpillar


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PRODUCT SUPPORT PROGRAM FOR REPLACING LIFTER COVER BOLTS ON CERTAIN 797F OFF-HIGHWAY TRUCKS [UEBE1096]
BASIC ENGINE
CYLINDER BLOCK GP
PRODUCT SUPPORT PROGRAM FOR REPLACING LIFTER COVER BOLTS ON CERTAIN 797F OFF-HIGHWAY TRUCKS
UEBE1096-02

14Sep2020
(Revised 30Oct2020)


A-454

 

Before/After

  
 Parts stock action needed 

PRODUCT SUPPORT PROGRAM FOR REPLACING LIFTER COVER BOLTS ON CERTAIN 797F OFF-HIGHWAY TRUCKS

7750 1107 1207
PS46854
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 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 "PS46854" 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.

NOTE:

When submitting claim for Parts Stock Action, Use the appropriate 99Z as the s/n, the appropriate Service Letter Program Number as the Part number in the Part Causing Failure field, "7755" as the Group Number, "56" as the Description Code.

NOTE:

Although this Program is to be administered as described above on the Affected Product, parts should be removed from parts stock as soon as possible.

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.

 
NOTE:

This Revised Service Letter replaces the 14Sep2020 (Revised 30Sep2020) Service Letter. Changes have been made to the Parts Needed.


TERMINATION DATE

30Sep2022

PROBLEM

The existing lifter cover mounting bolts on cover #9 can fail on certain 797F Off-Highway Trucks with High Altitude Engine Arrangement. If the existing lifter cover bolts fail it can result in an oil leak, potential mounting hole block damage, and unplanned downtime.

AFFECTED PRODUCT

Model Identification Number
797F  LAJ00195, 231, 257, 379, 544, 551, 568, 591-593, 614, 616-617, 620, 622-623, 625-627, 651, 660-661

PARTS NEEDED

Qty

Part Number Description
12 6V7673 BOLT-HEX HEAD
8 8T4121 WASHER-HARD
8 8T7353 BOLT-HEX HEAD
8 8T7934 WASHER-HARD
8 1732090 SPACER
16 1984767 WASHER-HARD
4 2464924 GASKET
8 2761326 BOLT-HEX HEAD
4 2894084 BOLT-HEX HEAD
8 3145638 BOLT-HEX HEAD
4 3605871 BOLT-HEX HEAD
4 3632030 SPACER
18 3632031 SPACER
18 3677967 BOLT-HEX HEAD
2 4289130 GASKET
4 4650517 BELLOWS AS
4 4891412 CLAMP
8 4906436 CLAMP
4 4906439 CLAMP
4 4958943 CLAMP
2 4958948 BELLOWS AS
2 5076390 BELLOWS AS
2 5285563 BELLOWS AS
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

****Parts Stock ****

Rework 575-6972 Engine Arrangements with serial numbers 4X401000-4X401033 in dealer parts stock and/or dealer exchange inventory.

 
 
****Affected Product****
Replace the lifter cover mounting bolts on cover #9 with the new hardware consisting of 276-1326 Bolts and 8T-4121 Washers. See Image1 for location of Cover #9. The new bolts are higher strength and increased length. This combined with increasing bolt torque will improve the strength of the bolted joint. Tighten all 8 of the cover mounting bolts to a torque of 70 Nm. Remove and replace the bolts one at a time.

At time of reassembly, replace exhaust manifold to cylinder head mounting bolts only on the manifolds that were removed with 314-5638 Bolts and 173-2090 Spacers. The bolts have additional strength capability at temperature and increased bolt length for more bolt stretch.

Refer to Disassembly and Assembly manual for removal of air system components to access cover #9. Air system structure bolts are recommended one time use and are included in the Parts Needed. Oil bolt threads at time of reinstallation on engines that have operational hours on the air system.
Image1

SERVICE CLAIM ALLOWANCES

****Parts Stock****

Submit one claim for all engines reworked in dealer parts stock and/or dealer exchange inventory. The parts listed in the Parts Needed and 8 hours of labor are allowed for each engine reworked.

 
 
****Affected Product****
Product smu/age whichever comes first
AVSpare
Dealer Suggested
Customer Suggested
Parts %
Labor Hrs%
Parts %
Labor Hrs%
Parts %
Labor Hrs%
0-10000 hrs,
0-24 mo 
100.0%
100.0%
0.0%
0.0%
0.0%
0.0%
 NOTE: This is a 12.0-hour job

If there has been a previous repair, part age/hours will apply. Retain a copy of the previous repair invoice in the dealer's records for audit purposes, and specify repair date and machine hours in the "Additional Comments" section of the warranty claim.




PARTS DISPOSITION

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

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

Information System:

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