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_________________________________________________________ Steering System 8-19 ® 05745159 POWER STEERING SYSTEM DIAGNOSIS CHARTS The diagnosis charts are guidelines to potential system faults. While the charts outline common faults, they may not cover all Table 1 Power Steering Diagnosis Chart - part 1 Problem Possible Cause Correction Poor Return of Steering 1. Tires under-inflated. 2. Lower coupling flange rubbing against 3. Steering wheel rubbing against direc- 4. Binding steering linkage, or ball joints. 5. Steering gear to column misalignment. 6. Tie rod not centralized. 7. Lack of lubricant in the suspension ball 8. Stuck or plugged valve spool. 9. Improper front wheel alignment. 10. Steering gear adjusted too tightly. 11. Kink in return hose. 1. Inflate to specified pressure. 2. Loosen the pinch bolt and assemble 3. Adjust the steering jacket. 4. Replace the affected parts. 5. Align the column. 6. Adjust tie rod ends as required. 7. Lubricate. 8. Remove, clean, or replace the valve. 9. Check and adjust to specifications. 10. Adjust over-center and thrust bear- ing preload to specifications. 11. Replace the hose. Steering Wheel Surges or Jerks 1. Low oil level in pump. 2. Loose pump drive belt. 3. Sticky flow control valve. 4. Insufficient pump pressure. 1. Add power steering fluid as required. 2. Adjust bolt. 3. Replace or clean the control valve. 4. Test system with analyzer. Hard Steering Effort in Both 1. Low tire pressure. 2. Lack of lubricant in suspension or ball 3. Binding of steering linkage, or ball 4. Steering gear to column misalignment. 5. Pump belt slipping. 6. Low fluid level in reservoir. 7. High internal leakage (steering gear or 8. Sticky flow control valve. 9. Steering gear adjusted too tight. 10. Improper front wheel alignment 1. Adjust the tire pressure. 2. Lubricate and relubricate at proper 3. Replace all affected parts. 4. Align the steering column. 5. Adjust belt. 6. Fill to proper level. Inspect lines and 7. Test system with analyzer. 8. Replace pump. 9. Adjust over-center and thrust bear- 10. Check and adjust to specifications. Foaming Milky 1. Air in the fluid and loss of fluid due to 2. Hose or air leakage in reservoir line. 1. Check for leak and correct. Bleed 2. Check welsh plug and housing for |