Kenworth Service Brakes, Air: Slack Adjusters

Kenworth is recalling about 280 vehicles over a problem with the service brakes, air. If the slack adjuster housing were to fracture, the wheel brake to which the slack adjuster housing is attached would no longer function, which could increase vehicle stopping distances, and if mounted on the steer axle, could cause the vehicle to pull to one side during braking, increasing the risk of a crash.

Campaign
11V157000
Manufacturer
PACCAR INCORPORATED
Reported
7 March 2011
Vehicles
280
Built between
Oct 2010 – Jan 2011
Models
9
Recall type
Vehicle
Initiated by
Manufacturer
Owners notified
30 March 2011
Repaired
Not reported
Unrepaired
Not reported

Does this affect my vehicle?

This recall covers vehicles built between October 2010 and January 2011. If yours was built outside that window, it is not part of this recall.

  • 2011-2012 Kenworth C500Built October 2010 to January 2011
  • 2012 Kenworth T170Built October 2010 to January 2011
  • 2011 Kenworth T270Built October 2010 to January 2011
  • 2011-2012 Kenworth T370Built October 2010 to January 2011
  • 2011-2012 Kenworth T440Built October 2010 to January 2011
  • 2011-2012 Kenworth T470Built October 2010 to January 2011
  • 2011-2012 Kenworth T660Built October 2010 to January 2011
  • 2011-2012 Kenworth T800Built October 2010 to January 2011
  • 2011-2012 Kenworth W900Built October 2010 to January 2011

What the defect is

Paccar is recalling certain model year 2011-2012 kenworth T270/370, T440/T470, T800, T660, W900 and C500 vehicles manufactured between october 18, 2010, and january 28, 2011. Certain cast iron slack adjuster housings, which transmit braking force from the brake chamber push rod to the brake cam tube, may include a flow notch in the handle portion of the housing due to an error during the casting process. A flow notch in the handle portion may reduce the effective cross section structure and cause the slack adjuster housing to fracture.

What could happen

If the slack adjuster housing were to fracture, the wheel brake to which the slack adjuster housing is attached would no longer function, which could increase vehicle stopping distances, and if mounted on the steer axle, could cause the vehicle to pull to one side during braking, increasing the risk of a crash.

What gets fixed

DEALERS WILL INSPECT AND REPLACE THE SLACK ADJUSTER HOUSING AS NECESSARY. THIS SERVICE WILL BE PERFORMED FREE OF CHARGE. THE SAFETY RECALL BEGAN ON MARCH 30, 2011.

Timeline

  1. Vehicles builtOctober 2010 to January 2011
  2. Recall reported to NHTSA7 March 2011
  3. Owners notified30 March 2011

Your rights

A safety recall repair is free. Under US federal law the manufacturer must fix a safety defect at no cost to you — no charge for parts, labor or diagnosis — whether or not you are the original owner. A dealer cannot charge you for recall work, and cannot require you to have bought the vehicle from them.

That entitlement is not unlimited. It applies where the vehicle was first sold less than 15 years before the recall was announced — 5 years for tires. Past that a manufacturer may still do the repair free of charge, and many do, but they are no longer obliged to. This recall was reported on 7 March 2011.

To arrange the repair, contact any franchised dealer for the brand. If a dealer refuses the work or tries to charge for it, you can report that to NHTSA at nhtsa.gov/recalls or on 1-888-327-4236.

Manufacturer contact

Owners may contact kenworth at 425-828-5440.

Official source

Manufacturer's recall number
11KWA
Recalling manufacturer
PACCAR INCORPORATED
Recall initiated by
MFR

Everything on this page — the models listed, the build dates and the repair figures — comes from the manufacturer's filing to NHTSA and describes the vehicle line as a whole, not any individual car. Only the manufacturer can confirm whether a specific vehicle is affected, and whether its recall work has already been carried out. Check yours by VIN and read the official notice at nhtsa.gov/recalls.

Additional notes

Kenworth safety recall. NO.11KWA.OWNERS may also contact the national highway traffic safety administration's vehicle safety hotline at 1-888-327-4236 (tty 1-800-424-9153), or go to <a href=http://www.safercar.gov>http://www.safercar.gov</a> .

Check your own vehicle

This page describes the recall, not any one car. To see which recalls cover a specific vehicle, search by make, model and year.

A VIN lookup here identifies your vehicle and shows recalls issued for that make, model and year. It cannot tell you what is still open on your individual car - only the manufacturer knows that. Search by VIN instead, or check your VIN at nhtsa.gov for whether a recall is still open on your individual car.

Same component

Same brand