Mack Trucks, Inc.: Safety Recalls in 1984

Updated on March 19, 2026.

There were 8 safety recalls made by Mack Trucks, Inc. in 1984. See the details of the recalls below.

You can also see similar information for other manufacturers.

Data Source: NHTSA.

See this for other years:

November 7, 1984

(Campaign #: NR (Not Reported))

STRUCTURE:FIFTH WHEEL ASSEMBLY

DUE TO IMPROPER AND INADEQUATE WELDING PRACTICES, THE FIFTH WHEEL ON THE INVOLVED VEHICLES IS DEFECTIVE. FRAME MOUNTED SUPPORTS MAY HAVE INCOMPLETE OR POOR QUALITY WELDS. THE WELDS COULD SUBSEQUENTLY FAIL ALLOWING SEPARATION OF THE TRACTOR FROM THE TRAILER.

NHTSA ID: 84V140000

Component: TRAILER HITCHES

# of Units Affected: 64

Consequence Summary:

Corrective Action:

THE DEALER WILL INSPECT AND REMOVE THE FIFTH WHEEL AND REWELD THE MOUNTING ANGLES AT NO CHARGE TO THE OWNER.

Park Outside Advisory: No

Do not Drive Advisory: No

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November 7, 1984

(Campaign #: NR (Not Reported))

SUSPENSION:I-BEAM:SOLID:FRONT LEAF SPRING ASSEMBLY

THE SPRING CENTER BOLT IS NOT THE PROPER SIZE OR LENGTH. AS A RESULT, LOCATION AND ALIGNMENT OF THE SPRING TO THE FRONT AXLE MAY NOT BE CORRECT. IF THE FRONT SPRING CLIPS LOOSEN, THE INADEQUATE CENTER BOLT MAY RESULT IN SPRING TO AXLE MISALIGNMENT, SHIFTING OF THE AXLE, AND LOSS OF STEERING CONTROL.

NHTSA ID: 84V142000

Component: SUSPENSION

# of Units Affected: 2,198

Consequence Summary:

Corrective Action:

THE DEFECT WILL BE CORRECTED BY THE ADDITION OF A SPACER BETWEEN THE SPRING AND THE CENTER BOLT HEAD TO INCREASE THE EFFECTIVE HEAD LENGTH. A LONGER CENTER BOLT WILL ALSO BE INSTALLED FOR POSITIVE RETENTION.

Park Outside Advisory: No

Do not Drive Advisory: No

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November 7, 1984

(Campaign #: NR (Not Reported))

STRUCTURE:DOOR ASSEMBLY:LATCHES AND LOCKS

THE DOOR LATCHES MAY BE DEFECTIVE BECAUSE A PAWL SPRING WAS NOT MANUFACTURED TO SPECIFICATIONS. THE PAWL SPRING DOES NOT CREATE PROPER TENSION ON THE PAWL, (A PART OF THE DOOR LATCH MECHANISM). THIS CONSTITUTES A NON-COMPLIANCE WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 206, "DOOR LATCHES AND DOOR RETENTION COMPONENTS".

NHTSA ID: 84V141000

Component: LATCHES/LOCKS/LINKAGES

# of Units Affected: 1,300

Consequence Summary:

Corrective Action:

THE DEALER WILL INSPECT AND REPLACE DOOR LATCHES, IF NECESSARY.

Park Outside Advisory: No

Do not Drive Advisory: No

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April 3, 1984

(Campaign #: NR (Not Reported))

FUEL:FUEL TANK ASSEMBLY:ATTACHMENTS

THE FUEL TANK STRAPS MAY DEVELOP MICROSCOPIC CRACKS IN THE PLATING OF THE UPPER END LOOP, EXPOSING THE PARENT METAL TO THE ATMOSPHERE. AIR EXPOSURE PROMOTES CORROSION AND MAY LEAD TO PREMATURE FAILURE, ALLOWING THE FUEL TANK TO DROP.

NHTSA ID: 84V043000

Component: FUEL SYSTEM, GASOLINE

# of Units Affected: 850

Consequence Summary:

Corrective Action:

DEFECTIVE STRAPS WILL BE REPLACED WITH VINYL COATED STEEL STRAPS.

Park Outside Advisory: No

Do not Drive Advisory: No

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March 23, 1984

(Campaign #: NR (Not Reported))

BRAKES:AIR SYSTEMS:AIR SUPPLY:CHECK VALVE

A MANUFACTURING ERROR RESULTED IN THE INSTALLATION OF CARBON STEEL SPRINGS IN SOME DUAL-COMPARTMENT AIR RESERVOIR CHECK VALVES. CARBON STEEL SPRINGS ARE INADEQUATE FOR THIS APPLICATION BECAUSE THEY ARE SUBJECT TO SEVERE CORROSION AND SUBSEQUENT FAILURE OF THE CHECK VALVE.

NHTSA ID: 84V035000

Component: SERVICE BRAKES, AIR

# of Units Affected: 850

Consequence Summary:

Corrective Action:

THE CARBON STEEL SPRING WILL BE REPLACED WITH A STAINLESS STEEL ONE.

Park Outside Advisory: No

Do not Drive Advisory: No

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March 23, 1984

(Campaign #: NR (Not Reported))

SUSPENSION:SINGLE AXLE:REAR:LEAF SPRING ASSEMBLY

SPRING SEAT CAN DEFORM, WHICH CAUSES A DECREASE IN THE CLAMPING FORCE IN THE SUSPENSION ASSEMBLY. LOSS OF CLAMPING FORCE MAY BRING ABOUT AXLE MISALIGNMENT OR AXLE HOUSING FAILURE.

NHTSA ID: 84V036000

Component: SUSPENSION

# of Units Affected: 3,421

Consequence Summary:

Corrective Action:

THE AXLE HOUSING WILL BE INSPECTED AND REPLACED, IF NECESSARY. THE SPRING SEATS WILL ALSO BE REPLACED.

Park Outside Advisory: No

Do not Drive Advisory: No

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March 22, 1984

(Campaign #: NR (Not Reported))

BRAKES:AIR SYSTEMS:LINES:METALLIC

FRONT AXLE AIR BRAKE LINES ARE ROUTED TOO CLOSE TO THE ENGINE EXHAUST MANIFOLD. THIS CAN PERMIT BRAKE LINES TO MELT AND RUPTURE, CAUSING A REDUCTION IN AIR PRESSURE TO BRAKE CHAMBERS UPON BRAKE APPLICATION.

NHTSA ID: 84V032000

Component: SERVICE BRAKES, AIR

# of Units Affected: 1,163

Consequence Summary:

Corrective Action:

FRONT AXLE AIR BRAKE LINES WILL BE REPLACED, EMPLOYING NEW ROUTING AND HEAT RESISTANCE IMPROVEMENTS.

Park Outside Advisory: No

Do not Drive Advisory: No

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March 22, 1984

(Campaign #: NR (Not Reported))

STEERING:COLUMN COUPLING

IMPROPER STEERING CLAMP BOLTS AND TORQUE APPLIED DURING INSTALLATION. THE BOLT COULD FAIL, ALLOWING THE STEERING YOKE TO BECOME LOOSE.

NHTSA ID: 84V033000

Component: STEERING

# of Units Affected: 4,393

Consequence Summary:

Corrective Action:

INSPECTION AND, IF NECESSARY, INSTALLATION OF PROPER STEERING SHAFT CLAMP BOLTS TIGHTENED TO SPECIFICATIONS.

Park Outside Advisory: No

Do not Drive Advisory: No

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