Mack Ch Recalls

Mack Ch — Brakes High risk

Aug 28, 2007 Model years: 2002, 2003, 2004, 2005, 2006, 2007

On certain trucks, the engine configuration makes servicing fuel injection lines difficult when using traditional tools. It is possible for fuel leaks to develop following recall c

Also affects: Mack Cxn, Mack Chn, Mack Cx

Mack Ch — Fuel System High risk

Mar 28, 2007 Model years: 2007

On certain trucks, sleeves installed as a result of repairs associated with safety recall SC0317 (Transport Canada number 2006258) may chafe the fuel injection line. This may compr

Also affects: Mack Cxn, Mack Chn, Mack Cx

Mack Ch — Fuel System High risk

Oct 10, 2006 Model years: 2003, 2004, 2005, 2006, 2007

On certain trucks, a leak in the fuel injection line may spray fuel on the Exhaust Gas Recirculation (EGR) pipes. The hot EGR pipes could ignite the fuel, causing an underhood fire

Also affects: Mack Chn, Mack Cx, Mack Cxn

Mack Ch — Fuel System High risk

Jan 13, 2005 Model years: 2002, 2003, 2004

On certain vehicles, the location of the fuel hose used on the ASET AC engine may result in overheating and/or abrasion of the hose, which may lead to a premature failure. If the h

Also affects: Mack Chn, Mack Cx, Mack Cxn

Mack Ch — Steering High risk

Sep 17, 2004 Model years: 2003

On certain vehicles, the bolts that mount the steering gear to the frame can fail due to bolt quality issues which cause variation in the torque-tension relationship for the joint.

Also affects: Mack Cx

Mack Ch — Steering High risk

Aug 11, 2004 Model years: 2004

On certain vehicles, the steering gear mounting bolts were over-torqued during vehicle assembly and could fail. The steering gear is mounted to the vehicle's frame rail with 3 bolt

Also affects: Mack Cx

Mack Ch — Brakes High risk

Jul 7, 2004 Model years: 2003, 2004

On certain vehicles equipped with 18,000 lb and 20,000 lb front axle assemblies, the front brake chamber is too small to meet the stopping distance requirements of CMVSS 121. Corre

Also affects: Mack Dm

Mack Ch — Steering High risk

Feb 4, 2004 Model years: 2003

On certain vehicles, the steering arm could have a longitudinal crack. The crack may intersect the tapered mounting hole where the steering arm ball socket is mounted. If the crack

Also affects: Mack Cx

Mack Ch — Brakes High risk

Dec 5, 2003 Model years: 2003

Certain vehicles do not comply with the requirements of CMVSS 121 "Air Brake Systems". Due to improper seating of the check valve retainer in the brass fitting housing, it is possi

Also affects: Mack Cl, Mack Cv, Mack Cx, Mack Dm6, Mack Dmm

Mack Ch — Suspension High risk

Dec 5, 2003 Model years: 1998, 1999, 2001

On certain vehicles, a manufacturing defect in the unitized hub assemblies could result in premature spalling of the front wheel bearings, which in turn could lead to eventual brea

Also affects: Mack Cx

Mack Ch — Brakes High risk

Oct 15, 2002 Model years: 1997, 1998, 1999, 2000, 2001, 2002

On certain vehicles, additional axles were installed to increase the gross vehicle weight capacity but the parking brake capacity was not increased accordingly therefore not comply

Also affects: Mack Cl, Mack Cv, Mack Dm, Mack Le, Mack Mr

Mack Ch — Steering High risk

Aug 1, 2002 Model years: 2002

Certain vehicles were equipped with an improper power steering high pressure hose between the power steering pump and the steering gear. The hose installed was rated to have a work

Also affects: Mack Cx

Mack Ch — Steering High risk

Jul 22, 2002 Model years: 1999, 2000

Certain heavy-duty trucks equipped with TRW 20-EDL Ball Sockets were manufactured with a case depth and/or hardness that were below specifications. A bearing that is below specific

Also affects: Mack Cl, Mack Cx, Mack Rd

Mack Ch — Steering High risk

Mar 27, 2002 Model years: 2000, 2001

Certain Class 8 heavy-duty trucks equipped with R.H. Sheppard M90 steering gears. An incorrect hose was used for the high-pressure line between the power steering pump and the stee

Also affects: Mack Cx

Mack Ch — Steering High risk

Mar 26, 2002 Model years: 1999, 2000

Certain heavy-duty trucks equipped with TRW tie rod ends on certain Meritor axles. The tie rod and drag link ball stud ends contain bearings that are below the specified case depth

Also affects: Mack Cl, Mack Cx, Mack Rd

Mack Ch — Steering High risk

Mar 26, 2002 Model years: 2001, 2002

Certain 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

Also affects: Mack Cl, Mack Cv, Mack Cx, Mack Dmm, Mack Rb

Mack Ch — Steering High risk

Feb 27, 2002 Model years: 1999

Certain heavy-duty trucks equipped with drag link assemblies containing 24-DL model ball sockets and manufactured by TRW. Certain of the tie rod ball-socket bearings have a below-s

Also affects: Mack Cl, Mack Rd6, Mack Dm6, Mack Cx, Mack Rb

Mack Ch — Brakes High risk

Feb 27, 2002 Model years: 2001

Certain heavy-duty trucks equipped with certain Meritor-Wabco brake system relay valves manufactured by Haldex Brake Systems. The valve may stick open when a high-pressure applicat

Also affects: Mack Cl, Mack Cv, Mack Cx, Mack Dm, Mack Dmm

Mack Ch — Steering High risk

Nov 14, 2000 Model years: 1999

On certain vehicles, the TRW tie rod ball stud ends contain bearings that are below the specified case depth and/or hardness. This can lead to premature wear out and a possible sep

Also affects: Mack Cx

Mack Ch — Engine High risk

Oct 26, 2000 Model years: 1999, 2000

On certain vehicles, the return springs on the accelerator pedals are made of stainless steel or electroplated music wire. The design fatigue stress of the stainless steel springs

Also affects: Mack Cl, Mack Cx, Mack Dm, Mack Le, Mack Mr

Mack Ch — Steering High risk

Dec 22, 1997 Model years: 1997

IF THE DRAG LINK AXLE STEERING ARM CONNECTION IS NOT TORQUED AND THE COTTER PIN IS NOT INSTALLED, THE NUT COULD BACK OFF DURING VEHICLE OPERATION. IF THE NUT BACKS OFF, THERE COULD

Also affects: Mack Cl

Mack Ch — Structure High risk

Jan 13, 1997 Model years: 1996

NOTE: CLASS 8 TRUCKS. INSUFFICIENT TORQUE OF THE U-JOINT BEARING STRAP BOLTS CAN LEAD TO A BROKEN STRAP. IF THE STRAP BREAKS, THE DRIVESHAFT WOULD WOBBLE, POSSIBLY RESULTING IN SEP

Also affects: Mack Cl

Mack Ch — Brakes High risk

Jul 6, 1995 Model years: 1992, 1993, 1994, 1995

DEFECT: VEHICLES NOT EQUIPPED WITH A PROTECTIVE PRESSURE RELIEF VALVE BETWEEN THE AIR COMPRESSOR AND AIR DRYER, HAVE THE POSSIBILITY OF BECOMING OVERPRESSURIZED AND THE AIR DRYER M

Also affects: Mack Cl, Mack Dm, Mack Mr, Mack Rb, Mack Rd

Mack Ch — Structure High risk

Nov 17, 1994 Model years: 1988, 1989, 1990, 1991, 1992, 1993

THE DRIVESHAFT CENTRE SUPPORT BRACKET ON THESE VEHICLES CAN CRACK AND SUBSEQUENTLY BREAK CAUSING DRIVESHAFT WOBBLE AND POSSIBLE SEPARATION. THIS COULD RESULT IN SECONDARY VEHICLE D

Mack Ch — Engine High risk

Sep 13, 1993 Model years: 1991, 1992, 1993

FAN BLADE CRACKING COULD LEAD TO COMPLETE FRACTURE OF THE FAN BLADE ALLOWING THE BLADE TO BE PROPELLED OUTSIDE OF THE FAN SHROUD. THIS COULD POSE AN IMMEDIATE DANGER TO PERSONS WHO

Also affects: Mack Fdm

Mack Ch — 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 Mh, Mack Dm, Mack Rb

Mack Ch — Seats And Restraints High risk

Jul 3, 1991 Model years: 1988, 1989, 1990, 1991

THESE VEHICLES DO NOT COMPLY WITH C.M.V.S.S. 210 - SEAT BELT ASSEMBLY ANCHORAGES.

Also affects: Mack Cl

Mack Ch — Suspension High risk

May 21, 1991 Model years: 1988, 1989, 1990

ON VEHICLES USED IN LOGGING OPERATIONS, CERTAIN HENDRICKSON SUSPENSION SPRING HANGER BRACKETS MAY FRACTURE. SPRING HANGER FAILURE COULD CAUSE SEPARATION OF VEHICLE COMPONENTS AND R

Also affects: Mack Cl, Mack Mh, Mack R, Mack Rb, Mack Rd

Mack Ch — Steering High risk

Mar 27, 1990 Model years: 1988, 1989, 1990

ON VEHICLES WITH TRW POWER AND MANUAL STEERING GEARS AND SHEPPARD POWER GEARS, THE UPPER AND LOWER PINCH BOLT ON ALL STEERING PITMAN ARMS FOR TRW POWER AND MANUAL GEARS AND THE LOW

Mack Ch — Brakes High risk

Nov 7, 1989 Model years: 1988, 1989

THE BENDIX E12 DUAL CIRCUIT AIR BRAKE VALVES ON THESE VEHICLES MAY HAVE BEEN PRODUCED WITH AN IMPROPERLY INSTALLED TAPERED SNAP RING WHICH COULD COME OUT OF POSITION AND CAUSE THE

Mack Ch — Steering High risk

Jun 14, 1989 Model years: 1987, 1988, 1989

NOTE: VEHICLES MANUFACTURED AT THE WINNSBORO, SOUTH CAROLINA FACILITY. THE STEERING WHEEL RETAINING NUTS MAY HAVE BEEN IMPROPERLY INSTALLED AND/OR TORQUED. IF EITHER OF THESE PROCE

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