SEAL-O-RING 5P3092 - Caterpillar

SEBE7505
December 27, 2000
U-340
A-243
H-121
before or
after failure PRODUCT SUPPORT PROGRAM FOR CHECKING RADIATOR MOUNTING HOLE THICKNESS ON CERTAIN 3412 GENERATOR SETS
1353 PS40439 This Program can 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 "PS40439" as the Part number and "7755" as the Group Number. If administered before failure, use "56" as the Warranty Claim Description Code and use "T" as the SIMS Description Code. If administered after failure, use "96" as the Warranty Claim Description Code and use "Z" as the SIMS Description Code.
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.
TERMINATION DATE
December 31, 2001
PROBLEM
Insufficient thread engagement area on the radiator mounting holes. The radiator (p/n 1790727 or p/n 1790728) have a 10mm thickness at the mounting plate. There are four 5/8 inch bolts with 11 turns per inch used to mount the radiator to the base. This allows for only about 3/8 inch of thread engagement. The threads are stripping as the required torque is applied. The ramification of not doing this procedure is that the radiator may come loose and shift causing serious damage to the radiator, fan or other components.
AFFECTED PRODUCT
Model Identification Number
3412C PUMP 9EP177-178, 180-185, 187-188, 190-192, 194-259,
261-264, 266, 268, 270-288, 291-297, 299,
300-304, 306-307, 310-311, 313-314, 317-321,
329-331, 333
3412C BCW125-154, 156, 159-161, 163-164
3412C 4BZ730
PARTS NEEDED
4 - 5A8578 BOLT
4 - 1F7958 NUT-FULL
4 - 6V8178 WASHER
4 - 1180275 WASHER
ACTION REQUIRED
Replace the (4) 8T9393 5/8 inch bolts and (4) 8T4122 washers with (4) 5A8578 1/2 inch bolts, (4) 1F7958 1/2 inch nuts, (4) 6V8178 washers and (4) 1180275 washers.
Remove (1) 8T9393 Bolt and (1) 8T4122 Washer.
Replace with (1) 5A8578 Bolt, (1) 1F7958 Nut, use (1) 6V8178 Washer between the nut and radiator mounting plate and (1) 1180275 Washer between the bolt head and base rail.
Using a torque wrench, tighten to 135N$m +/- 20N$m.
Apply black paint to newly installed hardware to prevent rusting.
Repeat steps 1 through 4 on the remaining radiator mounting hardware.
Remember to tighten 135N$m +/- 20N$m.
SERVICE CLAIM ALLOWANCES
Product smu/age whichever comes first Caterpillar Dealer Suggested Customer Suggested
Parts Labor Hrs Parts Labor Hrs Parts Labor Hrs
0-12 months 100 % 1 0 0 0 0
This is a 1-hour job.PARTS DISPOSITION
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.