EDGE-CUTTING 1073746 - Caterpillar

Caterpillar: Confidential Yellow
This Program can only be administered after a failure occurs. The decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS5486" as the Part Number and "7755" as the Group Number. Use "96" as the Warranty Claim Description Code and use "Z" as the SIMS Description Code.
This Revised Service Letter replaces the August 22, 1998 (Revised September 1998) Service Letter. Changes have been made to the TERMINATION DATE.
Termination Date
December 31, 2001Problem
Spherical roller bearings (pn 2L-4444) used in 3516, single bearing SR4 and SR4B Generators may provide shorter service life than expected. Since bearings have a finite service life, as a good practice, the generator bearing should be replaced at engine overhaul.
Affected Product
Model & Identification Number
Group 1
3516 Gen Sets (25Z1953-5823), (Generator Serial Number Prefixes; 6SA, 6AA, 2ED, 8FD), (4XF433-681), (Generator Serial Number Prefixes; 2ED, 8FD), (5SJ69-540), (Generator Serial Number Prefixes; 2RF, 8GF)
Group 2
3516 Gen Sets (25Z2161-6001), (Generator Serial Number Prefixes; 2HN, 4EN, 5WN, 5SN, 4FN, 8NN), (4XF580-732), (Generator Serial Number Prefixes; 4FN, 8NN), (5SJ313-614), (Generator Serial Number Prefixes; 4FN, 5WN, 8NN)
3516B Gen Sets (6HN112-208), (Generator Serial Number Prefixes; 4FN, 8NN), (7RN198-603), (Generator Serial Number Prefixes; 5WN, 5SN, 4FN4, 8NN)
G3516 Gen Sets (4EK537-1620), (Generator Serial Number Prefix; 4EN4)
This Program applies to engines wihtin the serial
Parts Needed
Group 1
1 - 1543032 BEARING-BALL1 - 1600802 BRACKET GP-MIncludes:
6 - 1A8063 BOLT6 - 5H1504 WASHER-HARD4 - 5M2894 WASHER-HARD4 - 5M2894 WASHER-HARD4 - 5M2894 WASHER-HARD2 - 1525338 RETAINER-BAR2 - 1525338 RETAINER-BARGroup 2
1 - 1543032 BEARING-BALL1 - 1525179 BRACKET GP-MIncludes:4 - 5M2894 WASHER-HARD2 - 5P8245 WASHER-HARD4 - 0S1571 CAP SCREW2 - 9S1366 BOLT1 - 1274374 SEAL1 - 1303654 BAR-SUPPORT1 - 1525181 BRACKET AS-H2 - 1525338 RETAINER-BAR
Action Required
See attached Rework Procedure.
Service Claim Allowances
This is a 10-hour job.
Parts Disposition
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
Attach.(1-Rework Procedure)Rework Procedure
Group 1
Remove existing 2L-4444 spherical roller bearing, bearing bracket with sleeve, outboard seal, and bearing cap with inboard seal. Replace with 154-3032 Ball Bearing and 159-9377 Bearing Bracket with sleeve. Outboard seal should be replaced with new design double lip seal 127-4374. Bearing cap and inboard seal are not required on machines with new ball bearing. Two retainer bars 152-5338 must be added in place of cap if machine will be transported.
Group 2
Remove existing 2L-4444 spherical roller bearing, bearing bracket with sleeve, outboard seal, and bearing cap with inboard seal. Replace with 154-3032 Ball Bearing and 152-5181 Bearing Bracket with sleeve. Outboard seal should be replaced with new design double lip seal 127-4374. Bearing cap and inboard seal is not required on machines with new ball bearing. Two retainer bars 152-5338 must be added in place of cap if machine will be transported.
INSTRUCTIONS FOR BOTH GROUPS
REMOVAL OF FAILED 2L-4444 BEARING:
1) Use a 1U6415 or similar puller to remove the bearing.2) In the event that a bearing puller is unable to remove the bearing, check to see if the rolling elements will come out of the bearing.3) If the elements have been removed, the outer race of