TIB-E-053

ESB E053; PACCAR MX Fuel Line Damper
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SB-10044799-1562
Technical Information Bulletin
E053
Section
Fuel
Subject
PACCAR MX Fuel Line Damper Campaign
Release Date
6/21/2012
Condition
The high pressure fuel lines in identified chassis may be subjected to excessive vibrations which could result
in line fatigue failure and associated malfunction indicator lamp event and diesel fuel leak. Campaign E053
introduces a vibration damper to reduce vibrations and eliminate the related failure potential.
Chassis Affected
Select T660s, T700s, T800s and W900s built between 03/10/10 – 02/29/12 and powered by PACCAR MX
engines. See the attached dealer-customer-chassis list and customer letter.
Action
Service all chassis affected that enter your dealership, even if the customer has no issue with the chassis.
Use the procedure below. Review DWC or SIR online systems to verify that campaign “E053” is still open or
already completed prior to performing this repair.
ESB E053; PACCAR MX Fuel Line Damper
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Warranty
There is no time or mileage limit for this campaign. Kenworth will pay parts at dealer net plus applicable markup and 1.5 hours labor. Use Quick Claim E053.
For chassis that have already had dampers installed, file Quick Claim E053a for 0.2 hours inspection time and
to record completion of the campaign in SIR.
CODING:
Failure Location: 044-001-011
Failure Type: 700
SRT Code: 044-996
Work Accomplished: 41
Responsibility Code: 01
Claim Type: F
Parts
Parts are available from PACCAR Parts (PPD) on a reserve basis. Orders will be accepted for 5 truck sets
(30 dampers) per dealer per day in the initial stages of this campaign, to ensure that all dealers have access
to parts during PPD inventory ramp up.
Quantity
6
*
Part Number
1904645PE
washers
Description
Fuel Line Damper
as required in removing lines for access
* Note: depending upon chassis configuration, repairs may require replacing two 0331327PE fuel filter return
pipe copper washers, 0244680 or 0119130 dosing module supply pipe copper washers, or others removed for
access. These are included in MSL stocking requirements and should be in dealer inventory. Please use
parts from dealer inventory and replenish with normal MSL restocking orders. Refer to Engine Rapido, Visual
search, then select Engine block complete and component Fuel system to identify specific part numbers
Procedure
Note: Some chassis listed may have had dampers installed prior to release of campaign E053. If chassis
already have dampers installed (see depiction in Procedure), there is no need to replace these. Please file
Quick Claim E053a for 0.2 hours inspection time and to record completion of this campaign in Kenworth
records.
E053 Procedure.pdf
Attachments
E053 Chassis-Dealer-Customer List.xls
E053 Customer Letter.pdf
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system are confidential and proprietary and the property of PACCAR Inc and its suppliers, and must be kept strictly confidential pursuant to the
contract licensing such access. Disclosure, publication, release or distribution of any material found on PACCAR systems to any person other
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discovers any unauthorized activity, access may be immediately terminated without prior notification. Violators may be subject to legal action.
ESB E053; PACCAR MX Fuel Line Damper
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CSC-10044799-9113
Date
Customer Name
Customer Address
Subject: E053 PACCAR MX Engine Fuel Line Damper Campaign
Dear Kenworth Customer,
Thank you for your purchase of a Kenworth Truck powered by a PACCAR MX Engine. We hope
your experience with both the vehicle and engine has exceeded your expectations.
Since the introduction of the PACCAR MX Engine, PACCAR has continued to monitor field
performance of the engine to ensure customer satisfaction. In our monitoring, we have identified
a failure mode of cylinder fuel lines, where vibrations can result in fatigue wear and cracking of
those lines. This, in turn, will result in a dash malfunction indicator lamp event and diesel fuel
leak. To address this, PACCAR has developed vibration dampers that we install in our factories
for current product and we would like to incorporate this improvement onto engines already in
service as well.
The chassis listed by VIN on this letter are included in the population that would benefit from this
product improvement. To arrange for this update, contact a Kenworth dealership to schedule an
appointment. You can find the nearest Kenworth dealer at Dealer Locator on the website
www.Kenworth.com.
When contacting your selected Kenworth dealer, refer to campaign E053 and the VIN listed on
this letter. The repair will take less than two hours* and there will be no charge to you.
We apologize for this inconvenience but ask for your cooperation to ensure continued satisfaction
with Kenworth products.
Thank you,
Mike Kalkoske
Director, Quality Services
Kenworth Truck Company
* A number of product improvement campaigns have been initiated for different populations and
your vehicle may be included in campaigns in addition to E053. Your selected dealer will be
able to identify if this is the case and estimate the length of time required for all work that may
be performed.