TIB 43-033: Horizontal Exhaust Bracket

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SB-10054571-1999

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Technical Information Bulletin
43-033

Section
Exhaust - 43

Subject
T680 Horizontal Exhaust Bracket Replacement

Release Date
10/11/2013

Revision
10/31/2013 - Revised Chassis List to include trucks manufactured before 8/12/2013.

See attached chassis list and customer letter below.

Condition
The exhaust hanger brackets can fatigue and crack where attached to the frame.

Chassis Affected
3643 T680 chassis with Horizontal Exhaust manufactured before 8/12/2013.

Action

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TIB 43-033: Horizontal Exhaust Bracket

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CAMPAIGN
Review the attached chassis list for your dealer code and schedule your customer(s) for service if their chassis is on the list. Service all
chassis affected that enter your dealership, even if the customer has no issue with the chassis. Use the attached procedure to replace
existing slotted brackets with brackets that only have holes, not slots. Review the DWC or SIR online systems for “Complete” next to the
“43-33” campaign code prior to performing this repair.
NOTE: Chassis affected are so new that Kenworth may not have customers’ names and addresses registered. Please contact your
customers or check your lot for these chassis.

Warranty
Through Standard Warranty (excludes Extended Warranty) or for repairs completed by 8/20/2014, whichever is greater, Kenworth will pay for parts at
dealer net, plus applicable mark-up and 0.5 hours labor. File the appropriate Quick Claim or long claim form, if required.
Quick Claim 43-33: Install new exhaust hanger hardware, 0.5 hours labor.
CLAIM CODING
Failure Location: 043-003-034Work Accomplished: 35
Failure Type: 700
Responsibility Code: 01
SRT Code: 043-023
Supplier Code: NA

Parts
Parts are available from PACCAR Parts.
Quantity

Part Number

4

HWC01069

Description
Bolt

4

1229W1661

Washer

4

HWC12501

Nut

1

M11-6836-001

Exhaust Hanger Bracket

1

M11-6837-001

Exhaust Hanger Bracket

Background
The existing brackets are susceptible to cracking under the loads they support. New brackets are designed with holes instead of slots where attached
to frame to provide increased bearing surface and strength.

Procedure
1.
2.
3.

Remove fasteners and brackets holding horizontal exhaust
Install new bracket
If truck is put together with Hucks, verify with customer if bolts are okay to substitute. Otherwise reinstall bracket with Hucks.

Attachments
Chassis List

Customer Letter

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TIB 43-033: Horizontal Exhaust Bracket

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