Mack MR recalls

What is wrong

Mack trucks is recalling certain model year 2002-2005 mr and le heavy trucks, manufactured from february 1, 2002, through december 22, 2004. Over time, the vehicle’s load may result in fatigue cracks of the front axle beam. These cracks can propagate and result in complete fracture of the axle beam.

Risk

If complete fracture occurs, the driver may lose control of the vehicle, increasing the risk of a crash.

Remedy

This recall relates to previous recalls 09v‑240 and 10v‑069. Analysis of these recalls has shown that after the receiving the remedies, the axles may still crack. As such, mack trucks will replace the affected axles on any mr and le models configured as front-loader or side-loader refuse trucks. Axles on all other mr and le models will receive a mag-particle inspection and mack will replace any affected axle beams free of charge. The safety recall began iin july 2012. Owners may contact mack trucks at 1‑800‑866‑1177.

Recall number 12V017000 · Recall details

What is wrong

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 trimming process.

Risk

These lines, if present, can promote initiation of cracks, which over time may possibly lead to axle beam failure and a vehicle crash can occur.

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.

Recall number 10V069000 · Recall details

What is wrong

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.

Risk

These lines, if present, can promote initiation of cracks, which over time may possibly lead to axle beam failure and a vehicle crash can occur.

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.

Recall number 09V240000 · Recall details

What is wrong

Mack is recalling 218 my 2006-2007 mr trucks. A check valve was omitted from the secondary supply port of the sr-7 spring brake modulating valve.

Risk

As a result, an air leak in the secondary or primary system may result in the park brakes inadvertently applying, increasing the risk of a crash.

Remedy

Dealers will add a check valve to the secondary supply port of the sr-7 spring brake modulating valve and will also repair the sr-7 valve by applying a check valve repair kit as required for the bendix safety recall (please see 07e-037). The recall began on april 15, 2008. Owners may contact mack at 1‑800‑528‑6586.

Recall number 08V144000 · Recall details

What is wrong

On certain trucks equipped with bendix sr-7 spring brake modulating valves, the internal rubber check valve may leak causing a delay in the application of the spring brakes to park the vehicle after the operator pulls the dash valve button.

Risk

This could delay or failure in applying the parking brakes which could result in a vehicle roll away, increasing the risk of a crash.

Remedy

Mack is working with bendix to repair these vehicles (please see 07e037). Bendix will install a check valve repair kit for the affected sr-7 spring brake modulating valve free of charge. The recall began on january 10, 2008. Owners may contact bendix at 1‑440‑329‑9000 or mack at 1‑800‑528‑6586.

Recall number 07V360000 · Recall details

What is wrong

On certain trucks equipped with sr-7 bendix brake valves, the check valve inside the valve cavity may not properly set, causing internal air leakage. If the check valve does not properly seat, the resulting leakage can cause a delay in the application of the spring brakes to park the vehicle after operator pulls the dash valve button.

Risk

The delayed parking brake application can occur without warning, leading to unintended vehicle rollaway increasing the risk of a crash.

Remedy

Dealers will inspect the valves and replace it free of charge. The recall began on august 14, 2006. Owners may contact mack trucks at 1‑800‑528‑6586.

Recall number 06V232000 · Recall details

What is wrong

On certain diesel powered heavy duty trucks, the bolts attaching the fuel tank mounting brackets to the frame may have insufficient torque and therefore may result in premature failure of the fuel tank mounting.

Risk

If the fuel tank falls, there is the potential for the tank to ignite, resulting in personal injury, vehicle and property damage.

Remedy

Dealers will inspect and replace the fuel tank bracket mounting bolts free of charge. The recall began on february 6, 2006. Owners may contact mack trucks at 1‑800‑528‑6586.

Recall number 05V524000 · Recall details

What is wrong

On certain heavy duty class 8 trucks equipped with holland air suspension systems, a transverse beam casting may fracture under normal loads. If a casting breaks when the vehicle is traveling on a roadway there is the potential for pieces of the casting to become projectiles and the suspension's transverse beam may drop down low enough to contact the road surface.

Risk

This will cause sparks that could potentially ignite and cause a fire.

Remedy

Dealers will inspect and replace the defective transverse beam assemblies. The recall began on august 19, 2005. Owners may contact mack trucks at 610‑709‑2131.

Recall number 05V312000 · Recall details

What is wrong

On certain class 8 chassis built with hendrickson lift axles which contained webb brake drums, the brake drums could experience premature crack of the braking surface resulting in reduction or complete loss of braking on that wheel end or loss of brake drum pieces.

Risk

Loss of braking ability could result in a vehicle crash, possibly causing injuries or death.

Remedy

Webb wheel is conducting the owner notification and remedy for this campaign. Webb will notify customers, inspect the brake drums and replace any drums that fail inspection. Owners should contact webb at 1‑800‑633‑3256 or mack at 1‑610‑709‑3337.

Recall number 04V258000 · Recall details

What is wrong

On certain chassis built with lng engines, the nexgen lng tank's primary and secondary relief valves could fail to open and relieve tank pressure.

Risk

This could cause ice buildup on the discharge side of the primary and secondary pressure system allowing the relief system to freeze and become blocked resulting in over pressurization of the lng tanks creating the risk of catastrophic tank rupture which could cause serious injury or death.

Remedy

Dealers will retrofit the lng tanks with a new primary relief valve pipe away tube and a new ventilated shroud. The recall began april 6, 2004. Owners who take their vehicles to an authorized dealer on an agreed upon service date and do not receive the free remedy within a reasonable time should contact mack at 1‑610‑709‑3337.

Recall number 04V159000 · Recall details

What is wrong

Certain heavy duty vehicles fail to comply with the requirements of federal motor vehicle safety standard no. 121, "air brake systems." improper seating of the check valve retainer in the brass fitting housing has occurred. It is possible for the air brake system pressure to push the check valve internal parts into the primary system reservoir and a vehicle operator would not know that this has happened.

Risk

In this condition, the vehicle would not meet the emergency requirements of the standard.

Remedy

Dealers will replace the check valve. Owner notification began november 26, 2003. Owners should contact mack at 1‑610‑709‑3337.

Recall number 03V253000 · Recall details

What is wrong

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.

Risk

When the valve sticks open, it can result in a total loss of air from either the service or the park brake system. The driver may lose braking ability under a service application, possibly resulting in a vehicle crash.

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 reasonable time should contact mack at 1‑610‑709‑3011 or meritor wabco at 800‑535‑5560.

Recall number 01V189004 · Recall details

What is wrong

Vehicle description: 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-specification case depth and/or hardness, which can lead to premature wear of the socket.

Risk

If this condition occurs, the driver can lose partial control of the right front wheel, possibly resulting in a crash.

Remedy

Dealers will replace the defective drag links. Owner/distributor notification began august 30, 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 reasonable time should contact mack at 1‑610‑709‑3011 or trw customer service at 1‑866‑280‑3287.

Recall number 01V044207 · Recall details

What is wrong

Vehicle description: heavy duty trucks equipped with tie rod assemblies containing 24-dl model ball sockets and manufactured by trw. Certain of the tie rod ball-socket bearings have a below-specification case depth and/or hardness, which can lead to premature wear of the socket.

Risk

If this condition occurs, the driver can lose partial control of the right front wheel, possibly resulting in a crash.

Remedy

Dealers will replace the defective tie rods. Owner notification began july 13, 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 reasonable time should contact mack at 1‑610‑709‑3011 or trw customer service at 1‑866‑280‑3287.

Recall number 01V044107 · Recall details

What is wrong

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.

Risk

This condition could cause the pedal to go to full throttle if both return springs break, increasing the risk of a crash.

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.

Recall number 00V230003 · Recall details

What is wrong

Vehicle description: heavy duty trucks built with bendix air ABS with an ec-17 1030r electronic control unit (ecu), there have been reports of unwanted ABS activation at low speeds caused by 1) chafed ABS wheel speed sensor wires on rotating parts or 2) a damaged component at the wheel end that generates a certain type of erratic sensor signal.

Risk

This condition could cause the ABS ecu to exhaust the air at the air brake modulators for one or more of the wheels. This could result in extended braking distances and a possible crash.

Remedy

Dealers will replace the ABS ecu.

Recall number 00V232009 · Recall details

What is wrong

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 stress levels to the steering axle spindle which could cause spindle failure.

Risk

If the spindle fails, a loss of driver control could occur, increasing the risk of a vehicle crash.

Remedy

Dealers will remove the left and right hub/drum assemblies from the steering axles and replace the inner wheel bearing cones and cups.

Recall number 99V014001 · Recall details

What is wrong

The steering arm can develop cracks causing the lever to break without warning.

Risk

This can result in loss of steering control and an accident.

Remedy

Dealers will replace the steering levers with an improved steering lever with increased fatigue strength.

Recall number 94V192000 · Recall details

What is wrong

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.

Risk

In the event the primary throttle return fails, failure of the secondary throttle return system would not provide protection against loss of throttle control.

Remedy

A new production secondary throttle return system configuration will be installed.

Recall number 94V032000 · Recall details

What is wrong

The carrier yoke bolts were manufactured with worn rolling thread dies, causing stress concentrations which caused cracks during the quenching process.

Risk

This condition can cause bolt failure and allow thedriveline to separate from the carrier assembly.

Remedy

Replace the carrier yoke bolts.

Recall number 93V024000 · Recall details

What is wrong

The stone bennett shifters do not indicate the relative position of the shift lever to the driver.

Risk

The shift lever does not meet the requirements of fmvss102.

Remedy

Install a decal displaying the relative shift positions.

Recall number 91V196000 · Recall details