Hand control valve failure
Failure of the parking brake valve upper cam plate around the central boss may allow the parking brake to release and could result in the vehicle running away.
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Failure of the parking brake valve upper cam plate around the central boss may allow the parking brake to release and could result in the vehicle running away.
A brake tube may break due to resonant vibration generated by operation of the vehicle. If tube breakage occurs, both front wheel and trailer brakes would remain functional, but the stopping distance would be increased.
On certain vehicles, the endstop for the secondary cab lock hook may experience abnormal wear. This can prevent the hook and latching bracket from engaging when the cab is powered.
来源:NHTSA(美国,公有领域)、加拿大交通部(加拿大开放政府许可)、DVSA(英国,开放政府许可 v3.0)、RappelConso 与欧盟 Safety Gate(法国,开放许可 2.0)。