Service Procedure

The following diagnostic procedure is for all steering pull incidents. Refer to the flow charts for speciftc incident complaints.

Basic Diagnostic Procedure

1. Verify the incident by road testing the vehicle (with the customer, if possible). Check the tire pressure and correct if necessary. Check for any unusual loading of the vehicle or use of non-original equipment tires which may cause the incident. If the vehicle exhibits consistent pull to one side, exchange the left and right front tires. If the wheels/tires are directional, exchange them front to rear. If this does not resolve the incident, or if the road test indicates wander or steering wheel off-center, continue to step 2, Diagnostic Procedures Summary.

2. Check the wheel alignment on a four-wheel alignment rack (Hunter D111, or equivalent).

Adjust the alignment if it's out of specification, and road test vehicle (see vehicle summary of adjustable suspension/steering angles). If the alignment was originally within specification or was adjusted into specification but the incident still exists, continue to Step 3, Diagnostic Procedures Summary.

3. Adjust the steering rack friction.





a. Mark the original position of the adjusting screw and lock nut relative to the steering rack housing.


b. Loosen the lock nut with a 38 mm wrench while preventing the adjusting screw from turning.


c. Carefully tighten the adjusting screw (clockwise) the following amount.





-- Rear wheel drive vehicle: 50 degrees (approx. 1/8 turn)
-- Front wheel drive vehicle: 20 degrees (approx. 1/16 turn)


d. Tighten the lock nut to 29-43 foot-pounds torque while preventing the adjusting screw from turning.

e. Verify the effectiveness with a road test.

Note: If the adjusting screw is over-tightened, the steering wheel "return to center" will be affected. Check steering wheel "return to center" after turns to ensure adjusting screw is tightened correctly before returning the vehicle to the customer.

If the incident is not resolved, call FIXS Hotline.


REFER TO DIAGNOSTIC PROCEDURE SUMMARY