Mack Rb Recalls & Complaints by Model Year
NHTSA lists 12 safety recalls and 0 owner complaints across 16 model years of the Mack Rb (1987–2005).
Pick your Mack Rb model year
| Model year | Recalls | Complaints |
|---|---|---|
| 2005 Mack Rb | 1 | 0 |
| 2004 Mack Rb | 2 | 0 |
| 2003 Mack Rb | 1 | 0 |
| 2002 Mack Rb | 2 | 0 |
| 2001 Mack Rb | 3 | 0 |
| 2000 Mack Rb | 3 | 0 |
| 1999 Mack Rb | 2 | 0 |
| 1998 Mack Rb | 2 | 0 |
| 1994 Mack Rb | 1 | 0 |
| 1993 Mack Rb | 1 | 0 |
| 1992 Mack Rb | 2 | 0 |
| 1991 Mack Rb | 1 | 0 |
| 1990 Mack Rb | 1 | 0 |
| 1989 Mack Rb | 3 | 0 |
| 1988 Mack Rb | 1 | 0 |
| 1987 Mack Rb | 1 | 0 |
All Mack Rb recalls (12)
Every NHTSA safety campaign that lists a Mack Rb, most recent first, with the model years each one covers.
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Axle assembly (power train)
Mack trucks is recalling certain model year 2002 through 2004 cl, cv, le, mr, rb, rd, and model year 2003 through 2004 dm heavy trucks manufactured from february 1, 2002 through september 30, 2003, equipped with axle beams manufactured by bharat forge. The axle beam may have transverse shear lines on the bottom of the axle from the…
Remedy: Mack will notify owners, inspect and replace any affected axle beams free of charge. The safety recall began on march 5, 2010. Owners may contact mack at 1-800-866-1177.
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Axle assembly (power train)
Mack is recalling 10,300 model year 2004 and 2005 cl, cv, dm, le, and rb and model year 2004 rd heavy trucks manufactured from october 1, 2003 through september 30, 2004, equipped with axle beams manufactured by bharat forge. The axle beam may have transverse shear lines on the bottom of the axle from the trimming process.
Remedy: Mack will notify owners, inspect and replace any affected axle beams free of charge. The safety recall began on august 14, 2009. Owners may contact mack at 1-800-866-1177.
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Suspension: rear
On certain heavy duty trucks equipped with dana spicer tandem drive axle models ds463, an undersized attachment weld may fracture without warning.
Remedy: The dealers will remove the suspect bracket, inspect the axle housing, and reweld the bracket to the axle housing. Owner notification began april 22, 2002. Owners who take their vehicles to an authorized dealer on an…
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Pump (steering)
Vehicle description: trucks equipped with e-tech engines. A condition exists on the auxiliary drive shaft of the e-tech engine that causes the loss of power steering on vehicles where the power steering pump is mounted off the front of the engine.
Remedy: Dealers will inspect the vehicles and replace the nut that holds the gear to the auxiliary drive shaft. Owner notification began march 22, 2002. Owners who take their vehicles to an authorized dealer on an agreed upon…
Model years: 2001
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Service brakes, air: controls, pedals and linkages
Vehicle description: heavy duty trucks equipped with certain meritor-wabco brake system two and four port relay valves. The valve may stick open when a high-pressure application is released.
Remedy: Dealers will replace these valves. Owner notification began november 16, 2001. Owners who take their vehicles to an authorized dealer on an agreed upon service date and do not receive the free remedy within a…
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Accelerator pedal (vehicle speed control)
Vehicle description: class 8 trucks equipped with felsted electronic accelerator pedals. The return springs can break on the accelerator pedals that are equipped with stainless steel or electroplated wire return springs.
Remedy: Replacement accelerator pedals equipped with return springs manufactured of music wire with one additional coil on each spring and with an organic coating, eliminating electroplating will be installed.
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Wheel bearing (suspension)
Vehicle description: class 8 heavy duty truck chassis equipped with mack 16,000 lb., 18,000 lb., or 20,000 lb. Heavy duty steering axles. The inner wheel bearing cone for the steering axle wheel hub assembly does not properly fit onto the mack steering axle spindle assembly. Improper fit of the bearing to the spindle increases the…
Remedy: Dealers will remove the left and right hub/drum assemblies from the steering axles and replace the inner wheel bearing cones and cups.
Model years: 1998
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Gear box (other than rack and pinion) (steering)
The steering gearbox mounting fasteners were not properly heat treated.
Remedy: Dealers will replace the suspect washers with new, improved washers.
Model years: 1994
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Vehicle speed control
Fuel injection system reconfiguration to comply with engine emission standards cause higher engine vibration levels which lead to early wear and complete failure of the secondary throttle return mechanism.
Remedy: A new production secondary throttle return system configuration will be installed.
Model years: 1987, 1988, 1989, 1990, 1991, 1992
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Trailer hitches
The carrier yoke bolts were manufactured with worn rolling thread dies, causing stress concentrations which caused cracks during the quenching process.
Remedy: Replace the carrier yoke bolts.
Model years: 1992, 1993
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Linkages (visibility)
A tolerance mismatch in the crank assembly of the bosch windshield wiper motor could cause instantaneous separation of the crank from the linkage assembly in the left hand control arm assembly; this would make the system inoperable.
Remedy: Replace left hand control arm linkage assembly.
Model years: 1989
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Shaft sector (steering)
Interference between steering gear sector shaft and the frame rail through hole can cause sector shaft wear and can weaken shaft cause it to break.
Remedy: Enlarge frame rail through hole to prevent interference: replace steering gear sector shaft if scored.
Model years: 1989
Other Mack models
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- CXU6127 complaints
- Ch6 complaints
- Gu6 complaints
- CH6005 complaints
- Cxu5 complaints
Source: NHTSA recall and complaint databases and EPA fuel economy data, October 2026. Complaint counts are owner reports to NHTSA, not verified defects. Recall counts are safety campaigns that list this model year; whether a particular car was already repaired depends on its VIN. How this data is compiled.