09021-93090 STOPPER Denso Cross

09Sep2013
V351
Containment -
Before/After
(Limited distribution)
PRODUCT SUPPORT PROGRAM FOR REPLACING THE FUEL INJECTORS AND ENGINE SOFTWARE ON CERTAIN 793D OFF-HIGHWAY TRUCKS
1290 1251 7620 1902 PS90321
This Containment Program can be administered either before or after a failure occurs.In either case the decision whether to apply the Program is made by the dealer and service rep. Obtain the service reps Goodwill Approver Code before completing the repair. EAME dealers should use their standard Industry Group specific goodwill approval codes. The Goodwill Approver Code must be included when submitting the claim.
When reporting the repair, use "PS90321" as the Part Number and "7777" as the Group Number. If administered before failure, use "56" as Warranty Claim Description and "T" as the SIMS Description Code. If administered after failure, use "96" as 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
30Sep2014
PROBLEM
The existing fuel injector has a 150 degree spray pattern. During the combustion stroke (process), the current end of injection timing maps can allow the 150 degree spray pattern to temporarily impinge upon the exposed wall of the cylinder liner as the piston moves downward in the bore.
Depending on engine speed and load factors, the fuel making contact with the liner can dilute the oil film or cause excessive soot. The excessive soot can build up to form carbon deposits at the piston lands and grooves, resulting in uneven top ring and groove wear, which may cause ring breakage. This situation is aggravated by contamination within the air and lubrication systems.
AFFECTED PRODUCT
Model Identification Number
793D FDB01439, 1442-1443, 1450-1451, 1561-1562, 1566-1567, 1576, 1620-1622, 1627, 1629
PARTS NEEDED
Qty
Part Number Description
16 4237547 INJECTOR GP-FUEL
1 4264383 SOFTWARE GP-ELEK
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 32% 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 service manual if/as necessary.
Install a full set of sixteen 145 degree fuel injectors along with
the software.
NOTE 1: Do not mix the 145 degree fuel injectors with the former 150 degree fuel injectors in the same engine.
NOTE 2: Do not install the software that is listed in the Parts Needed unless all sixteen fuel injectors have been replaced by the 145 degree spray pattern fuel injectors that is listed in the Parts Needed.
SERVICE CLAIM ALLOWANCES
Product smu/age whichever comes first Caterpillar Dealer Suggested Customer Suggested
Parts % Labor Hrs%