Recalls for 1988 Mack Rm

DEFECT #1 - VEHICLE SPEED CONTROL

Posted on: 1994-03-01
Description
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.

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

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

Notes
System: fuel; fuel pump.vehicle description: class 8 trucks equipped with e6 and e7 engines with robert bosch p7100 mechanically-governed fuel injection pumps.note: if your vehicle is presented to an authorized dealer on an agreed upon service date and the remedy is not provided within a reasonable time and free of charge or the remedy does not correct the defect or noncompliance, please contact the national highway traffic safety administration's auto safety hotline at 1-800-424-9393.

DEFECT #2 - STEERING:LINKAGES

Posted on: 1990-03-01
Description
Crack may develop on steering arm that could progress and reduce the fatigue life of the steering arm.

Consequence
Steering arm could fail without warning resulting in loss of steering control and possibly a crash.

Corrective Action
Install a redesigned steering arm.

Notes
System: steering arm.vehicle description: heavy-duty trucks.

DEFECT #3 - STEERING:GEAR BOX (OTHER THAN RACK AND PINION)

Posted on: 1988-04-06
Description
The steering shaft spline engagement is only .52, the recommended engagement is 2 inches.

Consequence
Under impacts such as road potholes, it could result inshaft disengagement.  The driver would immediately lose steering controlwithout warning and vehicle crash could occur.

Corrective Action
Replace shafts that measure under the minimum engagement dimensions with a longer shaft.

Notes
System: steeringvehicle description: trucks