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Mack Rm Recalls

24 Transport Canada safety recalls for the Mack Rm, model years 1972–1993. Tap any recall for the hazard, affected models, and corrective action.

Mack Rm — Steering High risk

Jul 20, 1993 Model years: 1989, 1990, 1991, 1992

VEHICLES ARE EQUIPPED WITH ROCKWELL FRONT DRIVE STEER AXLE ASSEMBLIES WITH TRW "TURNBUCKLE STYLE" CROSS-TUBES WHICH MAY FRACTURE WHEN SUBJECTED TO IMPACT LOADING. THIS COULD RESULT

Also affects: Mack Dmm

Mack Rm — Powertrain High risk

Mar 3, 1993 Model years: 1992, 1993

NOTE: CLASS 8 TRUCKS. THE BOLTS THAT RETAIN THE DRIVELINE YOKES TO THE TRUCK'S REAR AND REAR REAR CARRIERS MAY BE DEFECTIVE AND COULD FAIL AND ALLOW THE DRIVELINE TO SEPARATE FROM

Also affects: Mack Cl, Mack Rd, Mack Ch, Mack Mh, Mack Dm

Mack Rm — Visual System High risk

Apr 4, 1990 Model years: 1989

A TOLERANCE MISMATCH IN THE CRANK ASSEMBLY OF THE ROBERT BOSCH WINDSHIELD WIPER MOTOR SYSTEM COULD CAUSE INSTANTANEOUS SEPARATION OF THE CRANK FROM THE LINKAGE ASSEMBLY IN THE LEFT

Also affects: Mack Dm, Mack Dmm, Mack R, Mack Rb, Mack Rd

Mack Rm — Steering High risk

Feb 27, 1990 Model years: 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988

THE ROCKWELL STEERING ARM ON THESE VEHICLES MAY DEVELOP CRACKS WHICH COULD ULTIMATELY LEAD TO STEERING ARM FAILURE AND LOSS OF STEERING CONTROL WITHOUT PRIOR WARNING. CORRECTION: R

Also affects: Mack Dmm, Mack Rd

Mack Rm — Steering High risk

Jan 9, 1990 Model years: 1987, 1988

THE HIGH PRESSURE POWER STEERING HOSE MAY NOT MEET THE RATED BURST STRENGTH PRESSURE REQUIREMENTS. HOSE FAILURE WITH SUBSEQUENT LOSS OF STEERING POWER ASSIST AND INCREASED STEERING

Also affects: Mack Dm, Mack Dmm, Mack R, Mack Rd, Mack Rw

Mack Rm — Steering High risk

Aug 5, 1988 Model years: 1987, 1988

SOME OF THE NUTS/BOLTS USED TO FASTEN THE STEERING PITMAN ARM MAY LOOSEN AND COULD CAUSE LOSS OF STEERING CONTROL AND A VEHICLE CRASH WITHOUT PRIOR WARNING. CORRECTION: THE NUTS/BO

Also affects: Mack Dm, Mack Dmm, Mack R, Mack Rd, Mack U

Mack Rm — Brakes High risk

Aug 5, 1988 Model years: 1985, 1986

THESE VEHICLES DO NOT COMPLY WITH C.M.V.S.S. 106 - BRAKE HOSES (BURST STRENGTH).

Also affects: Mack Cf, Mack Dm, Mack Dmc, Mack Mc, Mack Mh

Mack Rm — Powertrain High risk

Jun 2, 1988 Model years: 1987

THE CLAMP PLATES BETWEEN THE DRIVE SHAFT AND CARRIER YOKE COULD CRACK. A BROKEN CLAMP PLATE WOULD RESULT IN THE YOKE FLYING OFF AT THE DETACHED POINT. THIS COULD CAUSE INJURY FROM

Also affects: Mack Dm, Mack Dmm, Mack R, Mack Rd, Mack U

Mack Rm — Steering High risk

Apr 19, 1988 Model years: 1985, 1986, 1987, 1988

THE STEERING SHAFT MAY HAVE INADEQUATE SPLINE ENGAGEMENT IN THE INSTALLED POSITION. FRAME AND CAB ARTICULATION SUCH AS COULD BE EXPERIENCED FROM POTHOLE IMPACTS COULD RESULT IN SHA

Mack Rm — Not Entered High risk

Mar 27, 1984 Model years: 1983, 1984

IT IS POSSIBLE THAT IMPROPER STEERING SHAFT CLAMP BOLTS WERE INSTALLED AND TORQUED TO THE WRONG SPECIFICATIONS. BECAUSE OF THE OVERLOADED CLAMPING FORCE APPLIED TO THE BOLT, THE BO

Also affects: Mack Dm, Mack Mc, Mack Mh, Mack Mr, Mack Rd

Mack Rm — Not Entered High risk

Apr 27, 1982 Model years: 1982

STEERING SHAFT JOINT YOKES MAY HAVE BRITTLE WELDS BETWEEN THE YOKE AND ITS MATING SHAFT. FIELD SERVICE LOADS MAY CAUSE FAILURE OF THE WELD AND LOSS OF YOKE TO WELD RETENTION. THIS

Also affects: Mack Dm, Mack F

Mack Rm — Not Entered High risk

Jul 12, 1979 Model years: 1978, 1979

VEHICLES EQUIPPED WITH MACK RA23 OR RA24 REAR AXLES MAY CONTAIN REAR SUSPENSION SPRING SEATS THAT COULD DEFORM ON SPRING DEFLECTION RESURING GEAR OUTPUT SHAFT SPLINES AND ULTIMATEL

Also affects: Mack Rs, Mack F, Mack Mb, Mack R, Mack Rl

Mack Rm — Not Entered High risk

Jun 4, 1979 Model years: 1977, 1978, 1979

TRUCKS EQUIPPED WITH MACK ENDT (B) 676, ETAZ (B) 673A AND ETAY (B) 673A ENGINES WITH AIRESEARCH TV6103 TURBO-CHARGERS. IN SOME INSTNACES OF TURBOCHARGER COMP[RESSOR WHEEL FAILURE T

Also affects: Mack Dm, Mack Dmm, Mack F, Mack Md, Mack Mr

Mack Rm — Not Entered High risk

May 4, 1979 Model years: 1974, 1975, 1976, 1977, 1978, 1979

ANTI-WHEEL LOCK VALVES SUPPLIED BY EATON CORPORATION MAY BE EXPOSED TO ACCUMULATED CONCENTRATIONS OF FLUID CONTAMINANTS IN THE AIR BRAKE SYSTEM THAT COULD CAUSE THE PISTON TO STICK

Also affects: Mack Dm, Mack Dmm, Mack F, Mack Hmm, Mack Mb

Mack Rm — Not Entered High risk

Nov 3, 1978 Model years: 1977, 1978

TRUCKS EQUIPPED WITH BENDIX ANTI-WHEEL LOCK ELECTRONIC CONTROLLERS. A DIODE FAILURE WHTHIN THE ELECTRONIC CONTROLLER MAY BLOCK AIR PRESSURE TO THE BRAKE CHAMBERS RESULTING IN A NO-

Also affects: Mack Dm, Mack Dmm, Mack F, Mack Mb, Mack R

Mack Rm — Not Entered High risk

Oct 5, 1978 Model years: 1977, 1978

TRUCKS EQUIPPED WITH BOGIE (TANDEM REAR) AXLES THAT ARE EQUIPPED TRUCKS EQUIPPED WITH BOGIE (TANDEM REAR) AXLES THAT ARE EQUIPPED WITH A SINGLE ANTI-WHEEL LOCK CONTROLLER. WHEEL SE

Also affects: Mack Dm, Mack Dmm, Mack F, Mack Mb, Mack Mc

Mack Rm — Not Entered High risk

Dec 2, 1977 Model years: 1977

VEHICLES EQUIPPED WITH SWTL56, SW56 OR SW57 SERIES BOGIES (TANDEM AXLES). THE WELDS SECURING THE REAR AXLE SPRING INSULATOR BRACKET TO THE AXLE HOUSING ARE IMPROPERLY POSITIONED AN

Also affects: Mack Rs, Mack Wl, Mack Ws, Mack Rl, Mack R

Mack Rm — Not Entered High risk

Oct 27, 1977 Model years: 1977

TRUCKS EQUIPPED WITH CERTAIN SEAT BELT ASSEMBLIES MANUFACTURED BY INDIANA MILLS AND MANUFACTURING INC. THE SEAT BELT ASSEMBLIES, STYLE NO. IMM-385 AND B1000R-P, PERFORMED MARGINALL

Also affects: Mack Cf, Mack Dm, Mack Dmm, Mack F, Mack Hmm

Mack Rm — Not Entered High risk

Oct 27, 1977 Model years: 1972, 1973, 1974, 1975, 1976, 1977

TRUCKS EQUIPPED WITH MACK 6 CYLINDER ENGINES AND FLEXIBLE BLADE ENGINE COOLING FANS. THE FLEXIBLE BLADE FANS MAY DEVELOP FATIGUE CRACKS IN THE LAMINATED STIFFENER. CONTINUED ENGINE

Also affects: Mack Rl, Mack R, Mack Hmm, Mack Dmm, Mack Rd

Mack Rm — Not Entered High risk

Jul 11, 1977 Model years: 1977

TRUCKS EQUIPPED WITH DAYTON-WALTHER FRONT WHEELS AND MACK FA617C OR FAW617 FRONT AXLES. THE DAYTON-WALTHER FRONT WHEEL STUDS WERE NOT PROPERLY HEAT TREATED AND ARE SUBJECT TO CRACK

Also affects: Mack Cf, Mack Dm, Mack F, Mack Mb, Mack R

Mack Rm — Not Entered High risk

Feb 8, 1977 Model years: 1976

VEHICLES ARE EQUIPPED WITH ROCKWELL INTERNATIONAL FDS 1807 OR 1808 FRONT DRIVE AXLES AND ROCKWELL MALLEABLE IRON WHEEL HUBS. (PART NO. 333-R-2382) A DESIGN DEFICIENCY EXISTS IN THE

Also affects: Mack Dmm, Mack Hmm

Mack Rm — Not Entered High risk

Aug 13, 1976 Model years: 1976

A MATERIAL DEFECT EXISTS IN THE BEARING CAPS OF THE CORDAN JOINT ASSEMBLY. FAILURE OF THIS JOINT CAN RESULT IN LOSS OF STEERING CONTROL WITHOUT WARNING.

Also affects: Mack Dmm, Mack Hmm

Mack Rm — Not Entered High risk

Dec 1, 1975 Model years: 1974, 1975

THE PRIMARY AND SECONDARY AIR SUPPLY LINES MAY HAVE BEEN CONNECTED IN REVERSE AT THE DUAL BRAKE TREADLE VALVE.

Also affects: Mack Dm, Mack Dmm, Mack F, Mack Mb, Mack R

Mack Rm — Not Entered High risk

Aug 20, 1975 Model years: 1975

TRUCKS EQUIPPED WITH ROCKWELL MODEL FDS 1600 OR FDS 1802 FRONT DRIVING AXLE ASSEMBLIES FITTED WITH ROCKWELL ANTI-WHEEL LOCK SYSTEMS SOME ROCKWELL AXLE ASSEMBLIES EQUIPPED WITH ROCK

Also affects: Mack Dmm, Mack Hmm

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