CAMSHAFT GP 4N0963 - Caterpillar

REBE9257-01
05Apr2013
(Revised 08Apr2013)
U-142
A-97
D-122
O-126
Before/After
PRODUCT SUPPORT PROGRAM FOR REWORKING THE TURBOCHARGER ON CERTAIN 3512B MARINE ENGINES
1052 1053 PS43880
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 "PS43880" as the Part Numberand "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.
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.
This Revised Service Letter replaces the 05Apr2013 Service Letter. A change has been made to the Title.
TERMINATION DATE
30Apr2015
PROBLEM
Exhaust leak between bolted joint of turbine housing and cartridge due to insufficient clamping load.
AFFECTED PRODUCT
Model Identification Number
3512B S2M00104-00202
PARTS NEEDED
Qty
Part Number Description
8 2N2765 BOLT-HEX FLG HD
8 2N2766 LOCKNUT
4 6V3917 SEAL-O-RING
4 6V5103 SEAL-O-RING
2 1215736 GASKET-TURBO
4 3693229 PLATE-CLAMP
16 3693458 BOLT-HEX FLG HD
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 7% 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
Update the turbine housing with different clamps and bolts. The new clamps and bolts provides a more secure joint between turbocharger cartridge and the turbine housing. 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%
0-7500 hrs,
0-24 mo 100.0% 100.0% 0.0% 0.0% 0.0% 0.0%
This is a 6.0-hour job
PARTS DISPOSITION
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
Rework Procedure
Refer to Disassembly and Assembly, SENR6564.
1. Remove eight original 188-8617 High Temperature Bolts and two original 188-8618 Clamps from the turbocharger.
2. Separate the turbine housing from the rest of the turbocharger assembly.
3. Counter bore the eight clamp bolt holes in the turbine housing to a depth of 2.5 mm (0.098 inch). The counter bore diameter is 10 mm (0.394 inch). The counter bore can be machined with a 10 mm (0.394 inch) drill or an end mill with a 0.5 mm (0.0197 inch) corner radius.
4. Tap the eight clamp bolt holes with a 3/8 inch - 16 thread tap.
Reassemble the turbocharger using the new 369-3458 High Temperature Bolts and 369-3229 Clamps in place of the hardware removed in Step 1
Note: Apply 5P-3931 Anti-Seize Compound to the threads of the bolts prior to assembly.
5. Fill the cooling system with coolant. Refer to Operation and Maintenance Manual, "Cooling System Coolant - Change".
Install the air cleaner. Refer to Disassembly and Assembly, "Air Cleaner - Remove and Install".