Model year record

1981 MACK MS300T

4 recall campaigns on file for this model year. No owner complaints on file.

Recalls

Recall campaignNHTSA 83V102000

Power train: manual transmission

Component
Power train: manual transmission
Manufacturer
MACK TRUCKS, INCORPORATED
Vehicles affected
565
Reported to NHTSA
1983-09-27
Owners notified
1984-01-03

Defect description

THE YOKE OF THE TRANSMISSION PROPELLER SHAFT MAY LACK REQUIRED STRENGTH DUE TO ERRONEOUS COUNTERBORE OPERATION IN WHICH 10 MILLIMETERS OF EXTRA MATERIAL MAY HAVE BEEN CUT. THIS CONDITION COULD LEAD TO FRACTURE OF THE YOKE IN SERVICE.

Manufacturer remedy

ALL AFFECTED PARTS WILL BE INSPECTED AND REPLACED, IF NECESSARY.

Recall campaignNHTSA 82V054000

Exterior lighting: headlights

Component
Exterior lighting: headlights
Manufacturer
MACK TRUCKS, INCORPORATED
Vehicles affected
5,700
Reported to NHTSA
1982-05-24
Owners notified
1982-11-24

Defect description

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.

Manufacturer remedy

VEHICLES WILL HAVE AN AUTOMATIC RESET CIRCUIT BREAKER INSTALLED TO ENSURE CONTINUED HEADLAMP ILLUMINATION IN THE EVENT OF A SHORT IN OTHER LIGHTING SYSTEMS.

Recall campaignNHTSA 81V089000

Power train: driveline

Component
Power train: driveline
Manufacturer
MACK TRUCKS, INCORPORATED
Vehicles affected
500
Reported to NHTSA
1981-07-14
Owners notified
1982-01-25

Defect description

HOLES DRILLED IN THE REAR AXLE YOKES TO BALANCE THEM COULD CAUSE A FAILURE OF THE YOKE.

Manufacturer remedy

VEHICLES WILL BE INSPECTED AND ALL DEFECTIVE YOKES WILL BE REPLACED WITH YOKES WITHOUT HOLES.

Recall campaignNHTSA 81V032000

Exterior lighting: brake lights: switch

Component
Exterior lighting: brake lights: switch
Manufacturer
MACK TRUCKS, INCORPORATED
Vehicles affected
150
Reported to NHTSA
1981-03-18

Defect description

ON CERTAIN VEHICLES, THE SEMI-TRAILER STOP LIGHTS MAY NOT ACTIVATE WHEN HAND CONTROL LEVER IS ACTIVATED.

Manufacturer remedy

AFTER INSPECTING BRAKE LIGHT SYSTEM, A SWITCH WILL BE INSTALLED WHICH WILL ACTIVATE THE TRAILER STOP LIGHT WHEN THE HAND CONTROL VALVE IS USED, IF NECESSARY.

Owner complaints

A complaint is one person's report to a federal agency. It is not a finding.

No complaints recorded for this model year.

Safety recall repairs are provided free of charge by franchised dealers, regardless of vehicle age or mileage. This page displays aggregated data for the model year. To check recall status for a specific vehicle, search its VIN at nhtsa.gov.