Investigation PE09050: 2008–2011 Thomas Built Buses SAF-T-Liner C2

Status

CLOSED

Opened

Oct 7, 2009

Closed

Jan 7, 2010

Model years

2008–2011

Subject

Rear spring trailing arm bolt loose

Component: Suspension › Rear › Springs › Leaf spring assembly › Hanger/bracket

Summary

This investigation was opened after odi was informed by two school bus fleets that they had found loose bolts on the rear suspension trailing arms of the air ride suspension on several of their buses. Odi visited the local dealer and confirmed the loose bolts.if these bolts fail and separate, the rear suspension can shift, allowing the rear end housing to move forward or backward.this could have a detrimental impact on vehicle control.in late november2009, daimlerfiled a safety recall (09v-458) outlining theirremedy program.daimler will inspect and torque all the rear suspension fasteners as needed.a copy of the recall notification is attached. The action taken by daimler resolves this investigation.accordingly, this investigation is closed.

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.

Model years covered

• 2008 Thomas Built Buses SAF-T-Liner C25 complaints