OFFICIAL NHTSA RECALL
86V079000
Vehicle Speed Control:springs
Reported Jun 16, 1986 · THOMAS BUILT BUSES, INC.
Summary
TWO THROTTLE RETURN SPRING DEFECTS ARE INVOLVED IN THIS RECALL. (1) BUSES EQUIPPED WITH CATERPILLAR ENGINES MAY HAVE A THROTTLE RETURN SPRING THAT BREAKS AND PREVENTS THE THROTTLE FROM RETURNING TO IDLE POSITION WHEN THE DRIVER'S FOOT IS REMOVED FROM THE ACCELERATOR CONTROL; (2) BUSES EQUIPPED WITH CUMMINS VT-225 ENGINES MAY HAVE THE THROTTLE RETURN SPRING CONNECTED TO THE THROTTLE SLAVE CYLINDER INSTEAD OF THE FUEL INJECTION PUMP LEVER. IF FAILURE OCCURS IN THE ACCELERATION CONTROL SYSTEM, THE ENGINE MAY ACCELERATE TO ITS MAXIMUM GOVERNED RPM. CONSEQUENCE OF DEFECT: IN EITHER CASE, THROTTLE CONTROL WILL BE LOST WHICH MAY RESULT IN AN ACCIDENT.
Consequence
Not supplied in the source record.
Remedy
A REPAIR KIT CONSISTING OF NEW SPRING, MOUNTING BRACKET AND PROPER REPAIR INSTRUCTIONS WILL BE SHIPPED TO EACH OWNER AT NO CHARGE AND THE OWNER MAY MAKE HIS OWN REPAIRS, OR HAVE A THOMAS DISTRIBUTOR OR A REPUTABLE LOCAL SHOP MAKE THE REPAIRS.
Notes
SYSTEM: THROTTLE LEVER RETURN SPRING. VEHICLE DESCRIPTION: TRANSIT AND SCHOOL BUSES WITH A GVWR GREATER THAN 10,000 POUNDS.
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Vehicle entries in this campaign
This is model-level recall history. It does not confirm whether a particular VIN is affected or has received the repair. Check with NHTSA ↗