TIB-23-001

Kenworth Truck Company
PO Box 1000
Kirkland, Washington 98083-1000
(425) 828-5000
Date TBD
CSC-10056319-5728
TIB 23-001 [First VIN]
Customer Name
Address
City, State Zip
Subject: T680/T880 Clutch Fluid
Dear Kenworth Customer,
Kenworth has determined that a bad batch of DOT4 fluid was used in the clutch master cylinder
of the chassis listed on this letter. The fluid can form borate salt crystals which may cause the
clutch master cylinder to seize.
The chassis numbers listed by VIN on this letter require inspection and may require repair by an
authorized dealer. Please contact a Kenworth dealership to schedule an appointment for this
work. 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 TIB 23-001 and the VIN listed
on this letter. The repair will take approximately one half hour and there will be no charge to you if
completed within Standard Warranty (excludes Extended Warranty) or for repairs completed by
08/01/2015, whichever is greater. 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
VIN:
[VIN List]

Kenworth Truck Company
PO Box 1000
Kirkland, Washington 98083-1000
(425) 828-5000
Date TBD
CSC-10056319-5115
TIB 23-001 [First VIN]
Customer Name
Address
City, State Zip
Subject: T680/T880 Clutch Fluid
Dear Kenworth Customer,
Kenworth has determined that a bad batch of DOT4 fluid was used in the clutch master cylinder
of the chassis listed on this letter. The fluid can form borate salt crystals which may cause the
clutch master cylinder to seize.
The chassis numbers listed by VIN on this letter require inspection and may require repair by an
authorized dealer. Please contact a Kenworth dealership to schedule an appointment for this
work. 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 TIB 23-001 and the VIN listed
on this letter. The repair will take approximately one half hour and there will be no charge to you if
completed within Standard Warranty (excludes Extended Warranty) or for repairs completed by
08/01/2015, whichever is greater. 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
VIN:
[VIN List]

TIB 23-001: T680/T880 Clutch Fluid Contamination
Page 1 of 3
SB-10056319-6048
Technical Information Bulletin
23-001
Section
Clutch - 23
Subject
Contaminated T680/T880 Clutch Fluid
Release Date
8/1/2014
Revision
08/20/2014: Added RMA information
Condition
Difficult clutch engagement or poor pedal feel.
Chassis Affected
3,343 T680/T880s built between 4/29/2013 -10/18/2013.
Action
CAMPAIGN
Review the attached chassis list for your dealer code and schedule your customer(s) for service if their chassis is on the list. Use the attached procedure.
Review the DWWC/SIR for “Complete” next to the “23-01” campaign code prior to performing this repair.
NOTE: Some 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
https://eportal.paccar.com/dealer/uskw/en/service/vehiclebulletins/vehiclefieldservice/Pages... 9/2/2014
TIB 23-001: T680/T880 Clutch Fluid Contamination
Page 2 of 3
Through Standard Warranty (excludes Extended Warranty) or for repairs completed by 08/01/2015, whichever is greater, Kenworth will pay for parts at
dealer net plus applicable mark-up and labor:
0.5 hours labor to inspect and flush Clutch Master Cylinder with DOT3 Fluid. (Use Quick Claim Code 23-01A).
1.0 hours labor to R&R Clutch Master Cylinder and flush fluid, refill with DOT3. (Use Quick Claim Code 23-01B).
File an additional claim for extraordinary circumstances. A quick claim for standard labor must be filed first.
CLAIM CODING
Failure Location:
023-001-052 Work Accomplished:
35
Failure Type:
200
Responsibility Code:
05
SRT Code: Flush
023-xxx
Claim Type:
C
Flush + Replace 023-026
Supplier Code:
23-01
Parts
Parts are available from PACCAR Parts via normal Dealer Order Entry (DOE).
Quantity
14 fl oz
1
Part Number
N/A
*E17-6011
Description
DOT3 Brake Fluid
*Clutch Master Cylinder
*Note: Do NOT replace the Clutch Master Cylinder if there are no borate salt crystals visible during the inspection (see procedure attached).
NOTE: Ship take-off parts to supplier, listed below, per ship code: “K1”. Mark RMA: WGA-DEAC4X on the outside of the package and record your
shipment tracking number in the claim.
Kongsberg Automotive
ATT: Conny Brannstrom
111 Kayaker Way, #A
Easley, SC 29642-2433
RMA# WGA-DEAC4X
MESSAGE: UPS GROUND #EY3895, KW WRTY PARTS
Background
It was determined that a bad batch of DOT4 brake fluid was installed in the chassis affected. This bad batch of DOT4 fluid had the propensity to develop
borate salt crystals. Presence of crystals of the right size, in the right place can cause a blockage within the clutch master cylinder. Blockage of internal
bleed ports in the master cylinder may result in the driver being unable to compress the clutch, prevention of clutch engagement, or poor pedal feel and
performance.
Attachments
Chassis List
Customer Letter
Procedure
Authored by: GH
Access to PACCAR’s Enterprise Portal is provided as a benefit of doing business with PACCAR. All applications and content accessed through this 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 than employees
with a need to know such information is strictly prohibited. All activity on this system is monitored. If PACCAR suspects or discovers any unauthorized
activity, access may be immediately terminated without prior notification. Violators may be subject to legal action.
https://eportal.paccar.com/dealer/uskw/en/service/vehiclebulletins/vehiclefieldservice/Pages... 9/2/2014
TIB 23-001: T680/T880 Clutch Fluid Contamination
Page 3 of 3
© Copyright 2014 PACCAR Inc. All rights reserved. We welcome your feedback on this page. For technical questions or concerns about this page,
please contact the DealerNet Webmaster.
https://eportal.paccar.com/dealer/uskw/en/service/vehiclebulletins/vehiclefieldservice/Pages... 9/2/2014

TIB 23-001: T680/T880 Clutch Fluid Contamination
Page 1 of 3
SB-10056319-6571
Technical Information Bulletin
23-001
Section
Clutch - 23
Subject
Contaminated T680/T880 Clutch Fluid
Release Date
8/1/2014
Revision
08/20/2014: Added RMA information
Condition
Difficult clutch engagement or poor pedal feel.
Chassis Affected
3,343 T680/T880s built between 4/29/2013 -10/18/2013.
Action
CAMPAIGN
Review the attached chassis list for your dealer code and schedule your customer(s) for service if their chassis is on the list. Use the attached procedure.
Review the DWWC/SIR for “Complete” next to the “23-01” campaign code prior to performing this repair.
NOTE: Some 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
https://eportal.paccar.com/dealer/uskw/en/service/vehiclebulletins/vehiclefieldservice/Pages... 9/2/2014
TIB 23-001: T680/T880 Clutch Fluid Contamination
Page 2 of 3
Through Standard Warranty (excludes Extended Warranty) or for repairs completed by 08/01/2015, whichever is greater, Kenworth will pay for parts at
dealer net plus applicable mark-up and labor:
0.5 hours labor to inspect and flush Clutch Master Cylinder with DOT3 Fluid. (Use Quick Claim Code 23-01A).
1.0 hours labor to R&R Clutch Master Cylinder and flush fluid, refill with DOT3. (Use Quick Claim Code 23-01B).
File an additional claim for extraordinary circumstances. A quick claim for standard labor must be filed first.
CLAIM CODING
Failure Location:
023-001-052 Work Accomplished:
35
Failure Type:
200
Responsibility Code:
05
SRT Code: Flush
023-xxx
Claim Type:
C
Flush + Replace 023-026
Supplier Code:
23-01
Parts
Parts are available from PACCAR Parts via normal Dealer Order Entry (DOE).
Quantity
14 fl oz
1
Part Number
N/A
*E17-6011
Description
DOT3 Brake Fluid
*Clutch Master Cylinder
*Note: Do NOT replace the Clutch Master Cylinder if there are no borate salt crystals visible during the inspection (see procedure attached).
NOTE: Ship take-off parts to supplier, listed below, per ship code: “K1”. Mark RMA: WGA-DEAC4X on the outside of the package and record your
shipment tracking number in the claim.
Kongsberg Automotive
ATT: Conny Brannstrom
111 Kayaker Way, #A
Easley, SC 29642-2433
RMA# WGA-DEAC4X
MESSAGE: UPS GROUND #EY3895, KW WRTY PARTS
Background
It was determined that a bad batch of DOT4 brake fluid was installed in the chassis affected. This bad batch of DOT4 fluid had the propensity to develop
borate salt crystals. Presence of crystals of the right size, in the right place can cause a blockage within the clutch master cylinder. Blockage of internal
bleed ports in the master cylinder may result in the driver being unable to compress the clutch, prevention of clutch engagement, or poor pedal feel and
performance.
Attachments
Chassis List
Customer Letter
Procedure
Authored by: GH
Access to PACCAR’s Enterprise Portal is provided as a benefit of doing business with PACCAR. All applications and content accessed through this 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 than employees
with a need to know such information is strictly prohibited. All activity on this system is monitored. If PACCAR suspects or discovers any unauthorized
activity, access may be immediately terminated without prior notification. Violators may be subject to legal action.
https://eportal.paccar.com/dealer/uskw/en/service/vehiclebulletins/vehiclefieldservice/Pages... 9/2/2014
TIB 23-001: T680/T880 Clutch Fluid Contamination
Page 3 of 3
© Copyright 2014 PACCAR Inc. All rights reserved. We welcome your feedback on this page. For technical questions or concerns about this page,
please contact the DealerNet Webmaster.
https://eportal.paccar.com/dealer/uskw/en/service/vehiclebulletins/vehiclefieldservice/Pages... 9/2/2014