1981 MACK MS300P Recalls (3)
- Campaign:
- 81V089000 on 07/16/1981
- Component:
- Power train:driveline
- Manufactured:
- 10/31/1980 - 05/31/1981
- Affected:
- 500
- Defect:
- Holes drilled in the rear axle yokes to balance them could cause a failure of the yoke.
- Correction:
- Vehicles will be inspected and all defective yokes will be replaced with yokes without holes.
- Notes:
- Vehicle description: trucks.system: suspension; rear axle yoke.consequences of defect: the yoke could fail without warning during vehicleoperation, possibly causing loss of vehicle control and an accident. also, thefailure could cause shrapnel to be propelled outward from the vehicle, injuringanyone within close proximity.note: the failure is most likely to occur when the vehicle is first started orwhile driving at moderate or high speeds in a heavy torque condition.
- Campaign:
- 81V157000 on 01/07/1982
- Component:
- Visibility:defroster/defogger system:windshield:blower
- Manufactured:
- 08/31/1979 - 07/31/1981
- Affected:
- 4,920
- Defect:
- When the ignition key is in the "on" position and the heater is operating at the "low" or "medium" setting, the heater switch wiring will overload in the event the heater motor seizes.
- Correction:
- A speed variation resistance unit and an electric motor moisture protection cap will be installed without charge.
- Notes:
- Vehicle description: trucks.system: heating; cab heater motor, electrical switch.consequences of defect: if the vehicle is standing still (parked or stopped intraffic) heat generated by the overload may melt and ignite the surroundingplastic housing and wire covering. a fire could spread quickly throughout thecab, causing serious injury to vehicle occupants.note: owner is advised to make sure heater/defroster fan motor is functionalbefore using cab heater prior to repair. heater/defroster blower should not beused in "low" or "medium" speeds while the vehicle is stopped or engine isidling.
- Campaign:
- 82V054000 on 05/26/1982
- Component:
- Exterior lighting:headlights
- Manufactured:
- 06/30/1979 - 04/30/1982
- Affected:
- 5,700
- Defect:
- The circuit wiring on these vehicles is arranged so that a short circuit in the rear taillights will also result in loss of power to the headlamps. for safety reasons the lighting system wiring should be independent.
- Correction:
- Vehicles will have an automatic reset circuit breaker installed to ensure continued headlamp illumination in the event of a short in other lighting systems.
- Notes:
- Vehicle description: trucks.system: lighting; head lamp wiring.consequences of defect: simultaneous loss of both taillights and headlampsduring night driving could result in a head-on or rear-end collision.
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