TN  10-3930-643-34 STEERING TROUBLESHOOTING AND MAINTENANCE. (cont) 9-1. Steering  Troubleshooting. MALFUNCTION TEST  OR  INSPECTION CORRECTIVE  ACTION a. SLOW STEERING AT LOW ENGINE RPM AND SLOW BOOM HYDRAULICS AT HIGH ENGINE RPM . Step 1. Check  operation  of  hydraulic  pump  for  malfunction  or  worn parts. Replace  hydraulic  pump,  refer  to  paragraph  12-2. Step 2. Check  steering  circuit  relief  valve  pressure,  refer  to paragraph 9-7. Adjust  to  correct  pressure  setting. Step 3. Check  steering  circuit  relief  valve  for  leaks  or  defective operation. Repair  steering  circuit  relief  valve,  refer  to  paragraph  9-7. b. SLOW STEERING. Step 1. Check steering cylinder assembly for worn or scored piston rings or seals, refer to paragraph 9-5. Step 2. Check inside diameter of steering cylinder for nicks and grooves too deep to be polished out. Replace defective parts. Install repair kit. For  disassembly  and  inside  inspection  of  cylinder  assembly,  refer  to paragraph 9-5. For  replacement  of  cylinder  assembly,  refer  to  TM  10-3930-643-20. 9-2