OFFICIAL NHTSA RECALL
80E006000
Power Train:automatic Transmission
Reported Mar 25, 1980 · ALLISON DIV., GM CORP.
Summary
CERTAIN TRANSMISSIONS WERE ASSEMBLED WITH IMPROPERLY MACHINED FORWARD CLUTCH HOUSINGS. THE RESULTING INCORRECT BALL CHECK VALVE SEAT ANGLES IN THE PRESSURE EXHAUST PORTS MAY PREVENT COMPLETE OIL EVACUATION FROM THE PISTON APPLY AREA.
Consequence
Not supplied in the source record.
Remedy
VEHICLES WILL BE INSPECTED AND, IF NECESSARY, THE FORWARD CLUTCH ASSEMBLIES WILL BE REWORKED.
Notes
VEHICLE CATEGORY: TRUCKS AND BUSES WITH DIESEL TRANSMISSIONS.SYSTEM: POWER TRAIN; ALLISON TRANSMISSIONS, MODEL NOS. HT-700, CLBT-750 ANDV-730.CONSEQUENCES OF DEFECT: TRUCKS AND BUSES WITH THESE TRANSMISSIONS MAY MOVEFORWARD EVEN WHEN THE GEAR SELECTOR IS IN NEUTRAL. THIS COULD OCCUR WITHOUTPRIOR WARNING AND COULD RESULT IN AN ACCIDENT.
This campaign page uses the representative official campaign record. Applicability-specific source variants appear on the linked vehicle pages. Recall counts refer to campaigns, not affected vehicles.
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 ↗