GENERAL AR-GENSET 3102437 - Caterpillar

PROBLEM
The existing sprocket bolts can loosen and fail on certain 349D and 349E Excavators. If the existing bolts fail, it can result in damage to the drive sprockets and drive gear case.
AFFECTED PRODUCT
Model Identification Number
345C MH FCR M2R00326-00342, 30333
345C MH HCR D3S00315-00317
349D L JGB00491-00843
RBJ00199-00231
349D L-VG KHS00125-00140
349E L KFX00295-00298, 306-310, 317-325, 341-345, 350-371, 373-403, 406-411, 413-435
MPZ00460-00724
MZW00214-00219
TFG00533-00951
349E LC-VG DGE00280-00331
KCN00250-00319
PARTS NEEDED
Qty
Part Number Description
40 8T0380 BOLT-HEX HEAD
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 15% 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
Refer to the attached Rework Procedure.
SERVICE CLAIM ALLOWANCES
Product smu/age whichever comes first Caterpillar Dealer Suggested Customer Suggested
Parts % Labor Hrs% Parts % Labor Hrs% Parts % Labor Hrs%
0-3000 hrs,
0-30 mo 100.0% 100.0% 0.0% 0.0% 0.0% 0.0%
This is a 4.0-hour job
PARTS DISPOSITION
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
Rework Procedure
1. Remove the existing 7X-2575 Sprocket Bolts and replace them with 8T-0380 Bolts.
2. Remove and replace the bolts one at a time in an alternating sequence.
3. When removing the bolts clean out the housing thread and the assembly face.
4. Degrease the new 8T-0380 Bolts before assembling. Use a suitable solvent/degreaser.
5. Apply Loctite 243 to the bolt threads before installing.
6. Tighten each bolt to the specified torque-turn. Tighten each bolt to a specified torque of 400 +/- 50 N.m and then turn additional 25 +/- 5 degrees.