Investigation PE09013: 2005–2008 Kenworth T800

Status

CLOSED

Opened

Feb 27, 2009

Closed

Jul 6, 2009

Model years

2005–2008

Subject

Rear brake air chamber mtg brackets

Component: Service brakes, air

Summary

On june 23, 2009 paccar notified odi that 3,423 kenworth t2000, t800, t600, w900, and t660 trucks, model years 2004 - 2009, equipped with bendix brakes, wide base low profile tires and airglide (ag) 400/460 rear suspensions are being recalled.certain of these vehicles have experienced fatigue cracks in the brake cam tube mounting or air chamber mounting flanges bracket adjacent to the attachment welds. If left unrepaired, the cracks can cause a complete fracture of the cam tube, which could disable the affected brake and risk increasing vehicle stopping distances under high pressure brake applications and decrease parking brake capability.this configuration has experienced failures at a higher rate than similar vehicles with other types of suspensions and brake installation clocking. Paccar will also send an owner notification letter to owners of vehicles equipped with suspensions other than the ag 400/460, which will prescribe a periodic inspection of the components and if a crack is discovered, offer the owners the opportunity for a free repair.this policy will be in effect until july 15, 2014. Copies of the recall and the owner notification are attached.

An NHTSA investigation looks into whether a safety defect exists. Opening one is not a finding. Outcomes can include a recall, closure without action, or further inquiry.