146579-0320 ZEXEL 9 461 612 331 BOSCH RETAINING PIN 9461612331 1465790320 8941748150

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NOTE 2: Do not install the software that is listed in the Parts Needed unless all sixteen fuel injectors have been replaced by the 145 degree spray pattern fuel injectors that is listed in the Parts Needed.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% Parts % Labor Hrs% Parts % Labor Hrs%
0-20000 hrs,
0-72 mo 100.0% 50.0% 0.0% 0.0% 0.0% 50.0%
This is a 8.0-hour job
PARTS DISPOSITION
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.