PRODUCT SUPPORT PROGRAM FOR REPLACING THE PISTON SKIRTS ON CERTAIN C12 TRUCK ENGINES Caterpillar

PRODUCT SUPPORT PROGRAM FOR REPLACING THE PISTON SKIRTS ON CERTAIN C12 TRUCK ENGINES

Usage:

REBE1296-00

Show/hide table

25Oct2006

B360

Show/hide table

Before/After (Limited distribution)	PRODUCT SUPPORT PROGRAM FOR REPLACING THE PISTON SKIRTS ON CERTAIN C12 TRUCK ENGINES
1225		PS42276

Show/hide table

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 "PS42276" 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.

Show/hide table

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 Caterpillar product analyst.

Show/hide table

TERMINATION DATE

31Mar2007

PROBLEM

Show/hide table

Piston skirts on certain C12 may crack and fail. This failure may cause major engine damage as a result of a piston skirt failures.

AFFECTED PRODUCT

Show/hide table

Model	Identification Number
C-12	MBL16855, 16986, 17028-17029, 17031, 17035, 17037-17038, 17183-17186, 17191, 17253, 17260, 17263, 17265-17267

PARTS NEEDED

Show/hide table

Qty	Part Number	Description
1	1013125	GASKET
6	1043560	SEAL-LINER
1	1142687	SEAL-O-RING
6	1161089	BEARING-ROD
4	1182797	GASKET
26	1293184	BOLT-HEX HEAD
6	1523001	BOLT-HEX HEAD
1	1873307	GASKET AS-CYL
6	2382712	SKIRT-PISTON
6	4G4972	SEAL-O-RING
1	5P8211	SEAL-O-RING
1	6V8676	SEAL-O-RING
2	7L6580	SEAL-O-RING

ACTION REQUIRED

Show/hide table

Note: Before this service letter can be applied to an engine failure, the dealer must provide:
1. Engine serial numner, hours, and ECM download.
2. Submit pictures of at least one piston skirt, other than the failed piston skirt, with a crack to: Mike Rocke phone 309-578-4685 or Tim Stear phone 309-578-3635.
3. Approval from Mike Rocke or Tim Stear must be secured before a claim can be applied to this Service Letter.

Show/hide table

SERVICE CLAIM ALLOWANCES

Show/hide table

Product smu/age whichever comes first	Caterpillar		Dealer Suggested		Customer Suggested
Product smu/age whichever comes first	Parts %	Labor Hrs%	Parts %	Labor Hrs%	Parts %	Labor Hrs%
0-500000 hrs, 0-48 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%
500001-550000 hrs, 49-60 mo	70.0%	70.0%	0.0%	0.0%	30.0%	30.0%
550001-600000 hrs, 61-72 mo	50.0%	50.0%	0.0%	0.0%	50.0%	50.0%

Show/hide table

NOTE: This is a 20.8-hour job

Show/hide table

PARTS DISPOSITION

Show/hide table

Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.

Rework Procedure

Show/hide table

When you remove the cylinder packs from the engine follow the instructions below in order to install the skirts.

Image1.1.1

1.Making sure that the piston rings do not come out from the liner. Push piston from the top in order to expose the skirt and pin assembly at the bottom of the liner.