PRODUCT SUPPORT PROGRAM FOR REPLACING THE ENGINE OIL SCAVENGE PUMP BOLTS ON CERTAIN 797F OFF-HIGHWAY TRUCKS Caterpillar


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PRODUCT SUPPORT PROGRAM FOR REPLACING THE ENGINE OIL SCAVENGE PUMP BOLTS ON CERTAIN 797F OFF-HIGHWAY TRUCKS [UEBE1124]
LUBRICATION SYSTEM
PUMP GP-SCAVENGE
PRODUCT SUPPORT PROGRAM FOR REPLACING THE ENGINE OIL SCAVENGE PUMP BOLTS ON CERTAIN 797F OFF-HIGHWAY TRUCKS
UEBE1124-01

13Aug2020
(Revised 29Sep2020)


N030
N08U
N184
N18D
N18F
R080
R120

 

Before/After

 (Limited distribution) 
 Parts stock action needed 

PRODUCT SUPPORT PROGRAM FOR REPLACING THE ENGINE OIL SCAVENGE PUMP BOLTS ON CERTAIN 797F OFF-HIGHWAY TRUCKS

1312
PS46822
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 "PS46822" 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 13Aug2020 Service Letter. Changes have been made to the Action Required, Service Claim Allowances, and Parts Disposition (Parts Stock was added).


TERMINATION DATE

31Aug2022

PROBLEM

The existing engine oil scavenge pump bolts can loosen and fail on certain 797F Off-Highway Trucks. If the existing bolts fail it can cause low engine oil pressure events or geartrain damage.

AFFECTED PRODUCT

Model Identification Number
*******Group  1*******
797F  LAJ00195, 231, 257, 379, 544, 551, 568, 591-593, 614, 616-617, 620, 622-623, 625-627, 651, 660-661
*******Group  2*******
797F  LTZ00140-00159

PARTS NEEDED

Qty

Part Number Description
*******Group 1*******
1 3P0651 SEAL-O-RING
1 5P8861 SEAL-O-RING
1 6V3835 SEAL-O-RING
2 0398557 WASHER
1 1076280 SEAL-O-RING
1 1776911 SEAL-O-RING
2 2752200 BOLT-SHOULDER
1 3917219 SEAL-PIP
1 3917221 SEAL-PIP
2 5744265 WASHER-HARD
2 5914464 BOLT-HEX HEAD
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.

*******Group 2*******
1 3P0651 SEAL-O-RING
1 5P8861 SEAL-O-RING
1 6V3835 SEAL-O-RING
2 0398557 WASHER
1 1076280 SEAL-O-RING
1 1776911 SEAL-O-RING
2 2752200 BOLT-SHOULDER
1 3917219 SEAL-PIP
1 3917221 SEAL-PIP
2 5744265 WASHER-HARD
2 5914464 BOLT-HEX HEAD
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 all existing 575-6972 Engine Arrangements in dealer parts stock. Refer to the attached Rework Procedure.

 
 
****Affected Product****
It is recommended to complete this program within 6,000 engine hours.

NOTE: This Service Letter can not be used for After Failure support of a scavenge pump failure.

Refer to the attached Rework Procedure.

SERVICE CLAIM ALLOWANCES

****Parts Stock****

Submit one claim for each engine reworked in dealer parts stock. Include the engine serial number in the claim. 22 hours are allowed for each engine reworked in dealer parts stock. The parts listed in the Parts Needed for Group 1 are allowed for each engine reworked in dealer parts stock.

 
 
****Affected Product****
Product smu/age whichever comes first
AVSpare
Dealer Suggested
Customer Suggested
Parts %
Labor Hrs%
Parts %
Labor Hrs%
Parts %
Labor Hrs%
*******Group 1*******
0-20000 hrs,
0-48 mo 
100.0%
100.0%
0.0%
0.0%
0.0%
0.0%
 NOTE: This is a 22.0-hour job for Group 1

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.

NOTE: This Service Letter can not be used for After Failure support of a scavenge pump failure.

Product smu/age whichever comes first
AVSpare
Dealer Suggested
Customer Suggested
Parts %
Labor Hrs%
Parts %
Labor Hrs%
Parts %
Labor Hrs%
*******Group 2*******
0-20000 hrs,
0-48 mo 
100.0%
100.0%
0.0%
0.0%
0.0%
0.0%
 NOTE: This is a 22.0-hour job for Group 2

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.

NOTE: This Service Letter can not be used for After Failure support of a scavenge pump failure.



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.



Rework Procedure


 
1. Refer to Disassembly and Assembly KENR6052 - "Engine Oil Pan-Remove" for specific instructions to remove the front section of the oil pan.
 
2. Starting with bolt 1 (Image 1.2.1), remove the existing bolt. Ensure that the threads in the block are clean and free of oil or debris prior to installing the new fastener. Ensure any previously applied Loctite is removed from the threads.
Image1.2.1
 
3. Apply Loctite 243 along thread engagement length (20mm from bolt end), as shown in Image 1.3.1. Torque fastener to 40 N-m and then turn an additional 60 degrees. Torque process should be completed within 10 minutes of applying Loctite. Temperature above 15 C. Care must be taken to prevent the Loctite from contacting the bolt underhead, as this can cause increased assembly friction resulting in reduced clamp load of the fastener.
Image1.3.1
 
4. Repeat step 2 and 3 for bolt 2 (Image 1.2.1).
 
5. Starting with bolt 3 (Image 1.2.1), remove the existing bolt. Ensure that the threads in the block are clean and free of oil or debris prior to installing the new fastener. Ensure any previously applied Loctite is removed from the threads.
 
6. Apply Loctite 243 along thread engagement length (20mm from bolt end), as shown in Image 1.3.1. Torque fastener to 40 N-m and then turn an additional 90 degrees. Torque process should be completed within 10 minutes of applying Loctite. Temperature above 15 C. Care must be taken to prevent the Loctite from contacting the bolt underhead, as this can cause increased assembly friction resulting in reduced clamp load of the fastener.
 
7. Repeat step 5 and 6 for bolt 4 (Image 1.2.1).
 
8. Following completion of the scavenge pump bolt replacement, refer to Disassembly and Assembly KENR6052 - "Engine Oil Pan - Install - C175-20"
 
 

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