139010-0000 ZEXEL 9 411 610 493 BOSCH STUD 9411610493 1390100000 1157297900

25Sep2017
U-495
A-349
D-407
O-412
Parts stock action only
PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND POSSIBLY REPLACING AN O-RING SEAL ON CERTAIN HEUI REMAN FUEL INJECTORS IN DEALER PARTS STOCK
7750 1290 PI70680
Caterpillar’s obligations under this Service Letter are subject to, and shall not apply in contravention of, the laws, rules, regulations, directives, ordinances, orders, or statutes of the United States, or of any other applicable jurisdiction, without recourse or liability with respect to Caterpillar.
When submitting claim for Parts Stock Action, Use the appropriate 99Z as the s/n, the appropriate Service Letter Program Number as the Part number in the Part Causing Failure field, "7751" as the Group Number, "56" as the 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
31Dec2017
PROBLEM
An incorrect O-ring seal may possibly be included with certain HEUI Reman Fuel Injectors. If the incorrect O-ring seal is installed in an engine, it can cause excessive smoke, oil mixed with fuel, and/or misfire.
ACTION REQUIRED
Inspect the following injector part numbers in dealer parts stock:
0R1050
0R9348
0R9349
0R9350
10R0781
10R0782
10R1257
10R1262
10R1306
10R8999
10R9237
10R9238
10R9239
The incorrect O-ring seal will have a larger in inner diameter and will be not as thick as the 148-2903 O-Ring Seal. The incorrect O-ring seal will be loose on the nozzle case when installed on a fuel injector (Image 1).
The O-ring seals are shipped in a injector seal kit that is included with each injector (Image 2).
Using a 148-2903 O-Ring Seal, compare the injector seal kit to identify if there an incorrect seal. If there is an incorrect seal, replace the incorrect seal with a 148-2903 O-Ring Seal (Image 3).
Once inspected, mark the injector's packaging that it was inspected per this program and return the part to dealer parts stock.
Image1
Image2
Image3
SERVICE CLAIM ALLOWANCES
Submit one claim for all parts inspected and reworked in dealer part stock. 5 minutes will be allowed to inspect each injector and 5 minutes will be allowed to replace incorrect O-Ring. One 148-2903 O-ring per reworked injector will be allowed. Include total amount of injectors inspected or reworked. For each injector that was reworked, include injector serial number.
PARTS DISPOSITION
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.