Pull Drift Diagnostic Procedure

The Pull Drift Diagnostic Procedure should be used if the pull or drift is not significantly reduced with the service procedure or in cases of a steady state drift (no braking).

Pull or drifts come from various sources, each with a particular set of symptoms. Careful road test evaluation usually will pinpoint which cause (or causes) are present.

THE ROAD TEST

It is important to test drive the truck with the customer to UNDERSTAND HIS OR HER CONCERN.


Complete the road test before beginning any repairs since you may have multiple causes that need to be identified.

^ The road test should be done on a flat, straight road and should be done in both directions to account for wind.

^ Tire pressure should be checked and adjusted, if necessary.

^ A second person in the truck during the road test is helpful. Unless otherwise directed, the second person must remain in the front RH passenger location.

^ On trucks with automatic locking hubs, it is necessary to drive twenty (20) feet forward and then backwards to unlock the hubs





NOTE: IT IS POSSIBLE THAT THE TRUCK MAY HAVE MULTIPLE SYMPTOMS. A ROAD TEST/CAUSE CHART FOLLOWS.


NOTE: RECONNECT THE FLUID LEVEL SENSOR AFTER ROAD TEST