SERVICE INFORMATION 00-7 Wheels Tires PROBLEM POSSIBLE CAUSE CORRECTION Excessive Road Shock 1. Tire air pressure too high. 2. Wheel bearings adjusted too loose. 3. Camber adjustment incorrect (Negative camber contributes to road shock). 4. Weak or broken spring. 5. Defective shock absorbers. 6. Loose suspension components. 1. Deflate to correct pressure. 2. Adjust bearings. 3. Adjust camber. 4. Replace spring. 5. Replace shock absorbers. 6. Inspect, adjust or repair and replace as necessary. PROBLEM POSSIBLE CAUSE CORRECTION Wheel Hop (Vehicle Vibration and Rough Steering) Wheels 1. Rocks and debris wedged between dual disc wheels. 2. Out-of- balance tire and/or hub and drum/rotor assembly.
3. Improper positioning of the side rings split. Vehicle Loose or worn driveline or suspension. 1. Remove rocks and debris. 2. Determine the out-of-balance compo- nent and balance or replace. 3. Reassemble with ring split opposite (180 degrees) the valve opening to improve balance. Identify location of vibration carefully as it may be transmitted through the frame mak- ing a rear end vibration appear to come from the front. Then repair or replace loose or worn parts. (Refer to PROPELLER SHAFT [SEC. 4A] for vehicle vibration.) Stripped Threads Excessive clamp load. Replace studs — follow proper torque pro- cedure. Rust Streaks from Stud Holes Correc- tion Loose cap nuts.
Check complete assembly, replace dam- aged parts and follow proper torque proce- dure. PROBLEM POSSIBLE CAUSE CORRECTION Wobble (Vehicle Vibration and Rough Steering) Wheels 1. Bent or distorted disc from overloading or improper handling. 2. Loose mountings, damaged studs, cap nuts, enlarged stud holes, worn or bro- ken hub face, or foreign material on mounting surfaces. 3. Improper positioning of the side rings split. Vehicle 1. Improper alignment. 2. Loose, worn or broken suspension parts. 1. Replace wheel. 2. Replace worn or damaged parts. Clean mounting surfaces. 3. Reassemble with ring split opposite (180 degrees) the valve opening to improve balance. 1. Have vehicle aligned. 2.
Repair or replace.