COLLINS UNSPECIFIED 1985: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:HOSES, LINES/PIPING, AND FITTINGS

NHTSA Campaign ID Number: 85V144000

Production Dates: 1984-10-01 - 1985-08-01

Manufacturers Involved: COLLIER-KEYWORTH

Component: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:HOSES, LINES/PIPING, AND FITTINGS

Potential Number Of Units Affected: 31

Report Initiator: ODI ODI Report

THE REAR HYDRAULIC BRAKE LINE ON THE VEHICLE'S RIGHT SIDE MAY COME IN CONTACT WITH THE SUPPORTING STRUCTURE OF THE STEPWELL. THE CLEARENCE BETWEEN THE STEPWELL AND THE BRAKE LINE MOUNTED ON THE FRAMERAIL IS NOT SUFFICIENT. IF THE STEPWELL WERE TO TOUCH THE BRAKE LINE, DAMAGE TO THE BRAKE LINE COULD RESULT WITH THE PASSAGE OF TIME. CONSEQUENCE OF DEFECT: IF THE REAR HYDRAULIC BRAKE LINE WERE TO BE CRIMPED, RESPONSE OF THE REAR BREAKS WOULD BE SLOWED DOWN, THUS AFFECTING STOPPING TIMES. IF THE REAR HYDRAULIC LINE WAS TO BE SPLIT OPEN, LOSS OF FLUID WOULD RESULT AND PERFORMANCE OF THE ENTIRE BRAKING SYSTEM WOULD BE DEGRADED. OPERATION OF A VEHICLE WITH DAMAGED BRAKE LINES COULD LEAD TO SITUATIONS WHERE, IN PANIC STOP, A VEHICLE CRASH COULD RESULT. THIS COULD OCCUR WITHOUT PRIOR WARNING.

REROUTE BRAKE LINES TO AVOID CONTACT WITH STEPWELL OR CHANGE DESIGN TO ALLOW CLEARANCE.

SYSTEM: REAR HYDRAULIC BRAKE LINE/STEPWELL.VEHICLE DESCRIPTION: BUSES BUILT ON 14,500 LB GVWR; CP31432, GM CHASSIS, FLXETTE MODEL 123.