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Service Letter
PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND POSSIBLY REPLACING AN ORING SEAL ON CERTAIN HEUI REMAN FUEL INJECTORS IN DEALER PARTS STOCK
Media Number -TEBE6686-00

Publication Date -2017/09/25

Date Updated -2017/09/25

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TEBE6686-00

25Sep2017
U-495
A-349
D-407
O-412

Parts stock action
only

7750 1290
NOTE:

PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND
POSSIBLY REPLACING AN O-RING SEAL ON CERTAIN
HEUI REMAN FUEL INJECTORS IN DEALER PARTS STOCK

PI70680

Caterpillar’s obligations under this Service Letter are subject
to, and shall not apply in contravention of, the laws, rules,
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regulations, directives, ordinances, orders, or statutes of the
United States, or of any other applicable jurisdiction, without
recourse or liability with respect to Caterpillar.
NOTE:

NOTE:

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

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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

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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
parts handling.

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Copyright 1993 - 2017 Caterpillar Inc.
All Rights Reserved.

Tue Oct 3 09:57:32 CDT 2017
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