OFFICIAL CAMPAIGN FILE

NHTSA campaign 11V157000

NHTSA campaign 11V157000 covers 16 published year-and-model reports from 1 makes in this index and lists 280 potentially affected units campaign-wide. VIN eligibility must be checked separately.

Report received March 7, 2011 · Snapshot September 21, 2026

01 / DEFECT RECORD

What NHTSA campaign 11V157000 says

NHTSA campaign 11V157000 identifies SERVICE BRAKES, AIR and states that 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.

Defect summary

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.

Consequence summary

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.

02 / CORRECTIVE ACTION

Remedy for NHTSA campaign 11V157000

For NHTSA campaign 11V157000, the filed corrective action says: 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. owners may contact kenworth at 425-828-5440.

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. owners may contact kenworth at 425-828-5440.

Owner notification: March 30, 2011
Filing manufacturer: PACCAR INCORPORATED
Component groups: SERVICE BRAKES, AIR

03 / PUBLISHED VEHICLES

Vehicles listed under NHTSA campaign 11V157000

RecallRoad links 16 year-and-model reports associated with NHTSA campaign 11V157000; the list reflects published source rows, not individual VIN coverage.