1991 HERCULES IMPCO Recall

Campaign:

94E020000 on 07/25/1994

Component:

Vehicle speed control

Manufactured:

12/31/1990 - 05/31/1994

Affected:

412

Defect:

The engine throttle plate shaft can become disconnected from the throttle lever assembly. the hex head locking screw between the throttle stop assembly and the throttle shaft can loosen. also, the hex head pinch bolt between the throttle lever and the throttle plate shaft can loosen. the throttle return spring controls the throttle plate position through the throttle lever. if either screw loosens, the throttle return springs no longer control the throttle plate position.

Consequence:

Unanticipated full throttle conditions can occur,resulting in a loss of throttle control and possible accident.

Correction:

The throttle body has been redesigned to include a secondary return spring attached directly to the throttle plate shaft. throttle stop assembly and secondary return spring locking screws will be torqued to specification and treated with a thread sealing compound specifically designed for thread locking applications.

Notes:

System: fuel; throttle linkages and control.equipment description: gta5.6 and gta3.7 engines used in trucks and buses.note: if your vehicle is presented to an authorized dealer on an agreed uponservice date and the remedy is not provided free of charge within a reasonabletime, please contact hercules at 1-216-438-1390. also contact the nationalhighway traffic safety administration's auto safety hotline at 1-800-424-9393.

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