Mack Trucks, Inc.: Safety Recalls in 1981
Updated on March 19, 2026.
There were 10 safety recalls made by Mack Trucks, Inc. in 1981. See the details of the recalls below.
You can also see similar information for other manufacturers.
Data Source: NHTSA.
December 29, 1981
(Campaign #: NR (Not Reported))
HEATER:ELECTRICAL:DEFROSTER:DEFOGGER:FAN MOTOR
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.
NHTSA ID: 81V157000
Component: VISIBILITY
# of Units Affected: 4,920
Consequence Summary:
Corrective Action:
A SPEED VARIATION RESISTANCE UNIT AND AN ELECTRIC MOTOR MOISTURE PROTECTION CAP WILL BE INSTALLED WITHOUT CHARGE.
Park Outside Advisory: No
Do not Drive Advisory: No
December 29, 1981
(Campaign #: NR (Not Reported))
LIGHTING:GENERAL OR UNKNOWN COMPONENT:CLEARANCE LI
THE RIGHT HAND CLEARANCE LAMP IS OBSCURED, FROM CERTAIN ANGLES OF VISION, BY THE IN-LINE PRECLEANER AIR CLEANER CAP. THE INVOLVED VEHICLES FAIL TO CONFORM TO FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 108, "LAMPS, REFLECTIVE DEVICES, AND ASSOCIATED EQUIPMENT".
NHTSA ID: 81V153000
Component:
# of Units Affected: 209
Consequence Summary:
Corrective Action:
DEALER WILL REPLACE THE AIR CLEANER WITH ONE OF ACCEPTABLE HEIGHT.
Park Outside Advisory: No
Do not Drive Advisory: No
December 29, 1981
(Campaign #: NR (Not Reported))
STEERING:COLUMN
THE FLOORBOARD OPENING AND THE STEERING COLUMN SEAL BRACKET MAY NOT ALLOW SUFFICIENT CLEARANCE FOR THE SHAFT TO TURN FREELY IN THE CENTER OF THE BRACKET/SEAL. THE PINCH BOLT IN THE COLUMN YOKE MAY BIND OR LOCK THE COLUMN AGAINST THE BRACKET, ALLOWING LITTLE OR NO WHEEL RETURN.
NHTSA ID: 81V154000
Component: STEERING
# of Units Affected: 826
Consequence Summary:
Corrective Action:
DEALER WILL ENLARGE THE HOLE IN THE FLOORBOARD TO PROVIDE CLEARANCE FOR THE STEERING COLUMN U-JOINT PINCH BOLT. A NEW BRACKET AND CLAMP WILL ALSO BE INSTALLED WITHOUT CHARGE TO OWNER.
Park Outside Advisory: No
Do not Drive Advisory: No
December 29, 1981
(Campaign #: NR (Not Reported))
STEERING:POWER:SHAFT PITMAN
THE PITMAN ARM RETAINING BOLT MAY NOT HAVE BEEN TIGHTENED TO THE REQUIRED SPECIFICATIONS DUE TO A DESIGN CHANGE. INADEQUATE RETENTION OF THE BOLT TO THE OUTPUT SHAFT COULD ALLOW THE PITMAN ARM TO LOOSEN.
NHTSA ID: 81V155000
Component: STEERING
# of Units Affected: 225
Consequence Summary:
Corrective Action:
THE DEALER WILL INSPECT AND, IF NECESSARY, RETORQUE THE RETAINING BOLT TO PROPER SPECIFICATIONS AT NO CHARGE.
Park Outside Advisory: No
Do not Drive Advisory: No
July 14, 1981
(Campaign #: NR (Not Reported))
POWER TRAIN:DRIVELINE (INDICATOR FORWARD OR REVERS
HOLES DRILLED IN THE REAR AXLE YOKES TO BALANCE THEM COULD CAUSE A FAILURE OF THE YOKE.
NHTSA ID: 81V089000
Component: POWER TRAIN
# of Units Affected: 500
Consequence Summary:
Corrective Action:
VEHICLES WILL BE INSPECTED AND ALL DEFECTIVE YOKES WILL BE REPLACED WITH YOKES WITHOUT HOLES.
Park Outside Advisory: No
Do not Drive Advisory: No
July 8, 1981
(Campaign #: NR (Not Reported))
STEERING:LINKAGES:ARM:PITMAN
THE INVOLVED TRUCKS HAVE PITMAN ARMS WITH TIMING MARKS AND SERRATIONS LOCATED 8 DEGREES OUT OF PROPER ALIGNMENT. WHEN THE CHASSIS IS RAISED TO THE MAXIMUM CONDITION WITH THE WHEELS SUSPENDED OR DROPPED INTO A DEEP HOLE, THE PITMAN ARM AND DRAG LINK CAN GO INTO TOGGLE POSITION.
NHTSA ID: 81V086000
Component: STEERING
# of Units Affected: 100
Consequence Summary:
Corrective Action:
UPON INSPECTION, ALL DEFECTIVE PITMAN ARMS WILL BE REPLACED WITH PROPERLY TIMED ARMS.
Park Outside Advisory: No
Do not Drive Advisory: No
July 8, 1981
(Campaign #: NR (Not Reported))
BRAKES:AIR SYSTEMS:VALVE:HAND CONTROL
THE RETAINING PIN FOR THE BRAKE CONTROL KNOB HAS BEEN MISALIGNED (OFF THE CENTER LINE OF THE VALVE PLUNGER HOLE). THIS CAUSES THE KNOB TO BE OVERSTRESSED AT THE RETAINING PIN HOLE AREA CAUSING IT TO SEPARATE FROM THE VALVE.
NHTSA ID: 81V088000
Component: SERVICE BRAKES, AIR
# of Units Affected: 10,000
Consequence Summary:
Corrective Action:
THE HOLES WILL BE RETOOLED TO PROVIDE CORRECT ALIGNMENT AND PLASTIC KNOBS WILL BE REPLACED BY KNOBS OF STRONGER MATERIAL HAVING METAL REINFORCEMENTS.
Park Outside Advisory: No
Do not Drive Advisory: No
July 8, 1981
(Campaign #: NR (Not Reported))
INTERIOR SYSTEMS:SEAT AND SHOULDER BELTS AND BELT
THE INVOLVED TRUCKS DO NOT COMPLY WITH FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 208, "OCCUPANT CRASH PROTECTION", IN THAT THE EXTENDED RIDER"S SEAT WAS NOT EQUIPPED WITH A SEAT BELT AS REQUIRED.
NHTSA ID: 81V085000
Component:
# of Units Affected: 22
Consequence Summary:
Corrective Action:
Park Outside Advisory: No
Do not Drive Advisory: No
July 7, 1981
(Campaign #: NR (Not Reported))
STRUCTURE:BODY
THE RIGHT HAND FRONT CANOPY CAB MOUNTING BRACKET INTERFERES WITH THE RIGHT HAND BRAKE CHAMBER ON THE STEERING AXLE WHEN IN A CERTAIN DEGREE TURN AND SEVERE BUMPING IS PRESENT.
NHTSA ID: 81V083000
Component: STRUCTURE
# of Units Affected: 180
Consequence Summary:
Corrective Action:
THE FRONT CANOPY CAB MOUNTING BRACKET WILL BE MODIFIED TO ALLOW FOR CLEARANCE OF THE RIGHT HAND FRONT BRAKE CHAMBER, WITHOUT CHARGE TO OWNER.
Park Outside Advisory: No
Do not Drive Advisory: No
March 18, 1981
(Campaign #: NR (Not Reported))
BRAKES:HYDRAULIC:SWITCH:BRAKE LIGHT
ON CERTAIN VEHICLES, THE SEMI-TRAILER STOP LIGHTS MAY NOT ACTIVATE WHEN HAND CONTROL LEVER IS ACTIVATED.
NHTSA ID: 81V032000
Component: EXTERIOR LIGHTING
# of Units Affected: 150
Consequence Summary:
Corrective Action:
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.
Park Outside Advisory: No
Do not Drive Advisory: No
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