1979 MACK U SERIES — Problems, Recalls & Safety Data
N/A
Safety Rating
0
Owner Complaints
3
Recalls
0
Service Bulletins
0
Investigations
Overview of the 1979 MACK U SERIES
The 1979 MACK U SERIES has received a total of 0 safety complaints filed with the National Highway Traffic Safety Administration (NHTSA). There have been 3 recall campaigns affecting this vehicle, covering issues with SERVICE BRAKES, AIR:CONTROLS:HAND CONTROL/VALVE, STEERING:GEAR BOX (OTHER THAN RACK AND PINION), PARKING BRAKE:DRIVELINE:AIR.
Recalls for the 1979 MACK U SERIES
NHTSA has recorded 3 recalls for the 1979 MACK U SERIES, potentially affecting up to 19,775 vehicles.
Recall 81V088000 — SERVICE BRAKES, AIR:CONTROLS:HAND CONTROL/VALVE
| 10,000 vehicles affected
Defect: 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.
Remedy: THE HOLES WILL BE RETOOLED TO PROVIDE CORRECT ALIGNMENT AND PLASTIC KNOBS WILL BE REPLACED BY KNOBS OF STRONGER MATERIAL HAVING METAL REINFORCEMENTS.
View full details →Recall 80V054000 — STEERING:GEAR BOX (OTHER THAN RACK AND PINION)
| 109 vehicles affected
Defect: THE PREFABRICATED PINCH BOLT CLAMP AT THE LOWER STEERING SHAFT LOWER YOKE MAY NOT PERFORM ADEQUATELY WHEN TIGHTENED TO SPECIFICATIONS. THE CLAMP MAY THEN DEFORM AND LOSS OF CLAMPING FORCE AND STEERING SHAFT DISENGAGEMENT MAY RESULT.
Remedy: DEALER WILL RETROFIT WITH LOWER STEERING SHAFT LOWER YOKES THAT PROVIDE FOR INTEGRAL PINCH BOLT INSTALLATION IN PLACE OF PREVIOUS SEPARATELY FABRICATED CLAMP FOR THE PINCH BOLT.
View full details →Recall 80V052000 — PARKING BRAKE:DRIVELINE:AIR
| 9,666 vehicles affected
Defect: ON CERTAIN VEHICLES, THE KNOB THAT OPERATES THE TRACTOR PARK VALVE MAY BREAK OFF, RENDERING THE VALVE INOPERABLE.
Remedy: DEFECTIVE KNOBS WILL BE REPLACED WITH AN IMPROVED TYPE, WITHOUT CHARGE TO OWNER.
View full details →Owner Complaints for the 1979 MACK U SERIES
No complaints have been filed with NHTSA for the 1979 MACK U SERIES.
Safety Rating for the 1979 MACK U SERIES
NHTSA has not yet tested the 1979 MACK U SERIES in its New Car Assessment Program.
Technical Service Bulletins for the 1979 MACK U SERIES
No technical service bulletins have been reported for this vehicle.
NHTSA Investigations for the 1979 MACK U SERIES
There are no NHTSA defect investigations on record for this vehicle.
Other Model Years of the MACK U SERIES
- 1976 MACK U SERIES — 0 complaints
- 1977 MACK U SERIES — 0 complaints
- 1978 MACK U SERIES — 0 complaints
- 1979 MACK U SERIES (current)
- 1980 MACK U SERIES — 0 complaints
- 1981 MACK U SERIES — 0 complaints
- 1982 MACK U SERIES — 0 complaints
- 1983 MACK U SERIES — 0 complaints
- 1984 MACK U SERIES — 0 complaints
Other MACK Models
- MACK MACK — 35 total complaints
- MACK ANTHEM (AN) — 12 total complaints
- MACK CXU612 — 12 total complaints
- MACK CX613 — 10 total complaints
- MACK GRANITE (GR) — 10 total complaints
- MACK CH600 — 9 total complaints
- MACK GU — 9 total complaints
- MACK RD — 8 total complaints