Mack CTP recalls

What is wrong

On certain trucks equipped with a saf holland simplex fifth wheel, the lever arm pivot bolt may have been over tightened. An over tightened pivot bolt can distort the pivot bolt spacer sleeve, which may prevent the fifth wheel latch jaw from closing and latching securely around the trailer king pin.

Risk

There is a possibility that the pivot bolt can become loose without the driver's knowledge. When this occurs, the driver could drive away and the trailer could become disengaged, increasing the risk of a crash.

Remedy

Dealers will replace the pivot bolt and sleeve with a hex head shoulder bolt and washer free of charge. The recall began on january 28, 2008. Owners may contact mack trucks at 1‑800‑528‑6586.

Recall number 07V497000 · Recall details

What is wrong

On certain trucks equipped with parker single check valves (scv) provided by bendix. The defect exists in the parker scv that connects with the supply port of the sr-7 spring brake modulating valve. After prolonged use of the parker scv, the valve body retainer may become excessively worn and eventually break apart. Pieces of the parker scv can become lodged inside the sr-7 spring brake modulating valve, potentially causing either leakage out of the sr-7 valve or preventing air from properly exhausting from the sr-7 valve.

Risk

This condition can cause a delay in the application of the spring brakes to park the vehicle after the operator pulls the dash valve button. These conditions can occur without warning, leading to unintended vehicle rollaway, brake drag, or in the case of loss of primary circuit, inability to modulate the spring brakes.

Remedy

Mack is working with bendix to replace the parker single check valve. The recall began on january 9, 2008. Owners may contact bendix at 1‑440‑329‑9000 or mack at 1‑800‑528‑6586.

Recall number 07V361000 · 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, the cotter pin that retains the brake pedal clevis pin may not have been installed. The clevis pin connects the brake pedal to the brake foot valve.

Risk

If the pin were to come loose, the driver would not be able to apply the service brake, which could result in a crash.

Remedy

Dealers will inspect to see if the cotter pin is missing. If the pin is missing, the cotter pin will be installed. Owners are being advised not the drive the vehicle until the pin has been installed. The recall began on march 26, 2007. Owner may contact mack truck at 1‑800‑528‑6586.

Recall number 07V098000 · Recall details

What is wrong

On certain trucks equipped with a 46k pound chalmers rear suspension, the adjustable torque rods used on the suspension may be brittle.

Risk

This may lead to a premature failure of the rod, which may result in a loss of control of the vehicle increasing the risk of a crash.

Remedy

Dealers will inspect and repair the rods as required free of charge. The recall began on march 14, 2007. Owners may contact mack trucks at 1‑800‑528‑6586.

Recall number 07V053000 · Recall details

What is wrong

Certain trucks equipped with haulmax rear suspensions fail to comply with the requirements of federal motor vehicle safety standard no. 121, "air brake systems." it does not meet the required stopping distance as specified in the regulation.

Risk

The vehicle could experience reduced braking performance as a result. If this warning is not heeded, a vehicle crash could occur.

Remedy

Dealers will relocate the antilock braking system (ABS) sensor from the rear drive axle to the front drive axle free of charge. The recall began on june 15, 2007. Owners may contact mack trucks at 1‑800‑528‑6586.

Recall number 07V051000 · 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