Recalls for 1988 E-one Hush

DEFECT #1 - UNKNOWN OR OTHER

Posted on: 1991-07-31
Description
In the event that the proper pump engagement sequence is not followed the ok to pump indicator light will illuminate when the transmission is in a drive gear.

Consequence


Corrective Action
An electronic circuit and module will be installed to lock-out the pump throttle on electronically controlled transmissions if the correct lock-out procedures are not carried out.

Notes
System: fire truck water pumps.vehicle description: fire trucks with allison atec electronic transmissions,allison models ht741 and mt648.consequence of condition: unless the transmission is placed in the lock-up modebefore the pump is engaged, the engine can develop sufficient power to overridethe trucks park brakes, resulting in vehicle movement without prior warning anda possible accident.