Recall
Volvo B10m — 91V205000
NHTSA ID
91V205000
Make
Volvo
Model
B10m
Years Affected
1984
Recall Date
1991-11-22
Component
SERVICE BRAKES, AIR:ANTILOCK
Units Affected
171
Completion Rate
—
Mfr Campaign No.
Summary
THE EXISTING INTERLOCK AIR BRAKE SYSTEM MUST GET ITS AIR SUPPLY DIRECTLY FROM THE PARKING BRAKE AIR SUPPLY CIRCUIT. SHOULD A COMPONENT FAILURE OCCUR IN THE INTERLOCK AIR SYSTEM, IT WILL DEPLETE THE AIR SUPPLY FROM THE PARKING BRAKE CIRCUIT.
Consequence
DEPLETION OF AIR SUPPLY FROM THE PARKING BRAKE CIRCUITWOULD ALLOW THE BUS TO ROLL WITH THE PARKING BRAKE APPLIED. THIS COULDRESULT IN A VEHICLE ACCIDENT.
Remedy
RELOCATE THE AIR SUPPLY LINE FOR THE INTERLOCK SYSTEM SO THAT THE AIR SUPPLY COMES FROM THE PARKING BRAKE CIRCUIT TO ENSURE THAT WHEN THE PARKING BRAKE IS APPLIED, THE PARKING BRAKE CANNOT BE DISENGAGED OR OVERRIDDEN BY COMPONENT FAILURES.