2007 Mack CXP Problems, Complaints & Recalls

Problem: 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.

Fix: 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.

Problem: 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.

Fix: 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.

Problem: On certain trucks, an unprotected lead in the thermoswitch of the heater may make contact with another post possibly creating a short circuit, which can result in continuous operation of the heating element.

Risk: If the condition exists and the key is left on without fuel in the filter, the heating element may heat to a point where a flame becomes present at the tip of the element which could result in a vehicle fire.

Fix: Dealers will inspect the thermoswitch and will replace it if necessary. The recall began on september 10, 2007. Owners may contact mack trucks at 1-800-528-6586.

Problem: On certain trucks, the axle housings may have been manufactured with steel that was out of specification which could result in a fatigue failure over time.

Risk: If a fatigue failure occurs and is left unattended, the axle may lock up or the end of the axle could come off, which could result in a vehicle crash.

Fix: Dealers will inspect and replace the axles free of charge. The recall is expected to begin on or about april 9, 2007. Owners may contact mack trucks at 1-800-528-6586.

Problem: On certain trucks, the nut that retains the steering wheel may not have been installed.

Risk: If the retaining nut was not installed, the steering wheel may come off, which could result in a vehicle crash.

Fix: Dealers will remove the horn button to confirm that the retaining nut was installed. A retaining nut will be added if the nut is missing. The recall began on february 12, 2007. Owners may contact mack trucks at 800-866-1177.

Problem: On certain trucks, the brake cam tubes on the steer and drive axles may not have been greased.

Risk: The brake cam journals may corrode which may lead to the brakes dragging which could result in a vehicle fire.

Fix: Dealers will add grease to the brake cam tubes free of charge. The recall began on september 29, 2006. Owners may contact mack at 1-800-866-1177.