SERVICE INFORMATION 00-5 PROBLEM POSSIBLE CAUSE CORRECTION Pump Inoperative, Poor, or No Assist (Hard Steering) 1. Low oil level. 2. Air in the oil. 3. Defective hoses or steering gear. 4. Flow control valve stuck. 5. Loose nut in end of flow control valve. 6. Pressure plate not flat against ring. 7. Extreme wear of pump ring. 8. Scored pressure plate, thrust plate. 9. Vanes not installed properly. 10. Vanes sticking in rotor slots. 11. Faulty flow control valve assembly. 1. Fill the reservoir to the proper level. 2. Locate the source of the air leak and cor- rect it. 3. Repair or replace. 4. Repair or replace. 5. Torque nut. 6. Repair or replace. 7. Repair or replace. 8. Repair or replace.
9. Repair or replace. 10. Repair or replace. 11. Repair or replace. Moment Increase in Effort when Turning Wheel Fast to Right or Left 1. Low oil level in pump. 2. High internal leakage in hydraulic pump. 3. High internal leakage in steering gear. 1. Add power steering fluid as required. 2. Check the pump pressure. (See the pump pressure test.) 3. Repair Steering Wheel Surges or Jerks when Turning with Engine Running Especially During Parking 1. Low oil level. 2. Insufficient pump pressure. 3. Defective gear relief valve. 4. Sticky flow control valve. 1. Fill as required. 2. Check the pump pressure. (See the pump pressure test.) Replace relief valve if defective. 3.
Replace the gear relief valve. 4. Repair or replace. Steering Pulls to Left or Right 1. Camber incorrectly adjusted. Steering will generally pull to the side of the axle having the greatest positive camber. 2. Low air pressure in the right or left tire. Steering will pull to the side having the air pressure. 3. Axle loose and shifted at the spring U- bolts. 4. Rear axle loose at the spring U-bolt. If shifted axle is shifted at one side, it will cause the steering to pull. 5. Unbalanced steering gear valve. If this is the cause, steering effort will be very light in the direction of the lead and heavy in the opposite direction. 1. Adjust camber. 2.
Inflate the tire to the correct pressure, check for air leak and repair as required. 3. Align the axle, and torque the U-bolt nuts. Inspect for damaged parts. Re- place if required. 4. Align the rear axle and replace the defec- tive parts, if any. Torque the U-bolt. 5. Replace the valve.