TM  10-3930-643-34 HYDRAULIC  SYSTEM  TROUBLESHOOTING  AND  MAINTENANCE. 12-1. Hydraulic  System  Troubleshooting. MALFUNCTION TEST  OR  INSPECTION CORRECTIVE  ACTION b. ALL  CYLINDER  ASSEMBLIES  OPERATE  SLOWLY. Step 3. Check loader control valve to determine if relief valves are stuck or if valve spring(s) are broken, allowing hydraulic fluid under pressure to dump back to reservoir, refer to paragraphs 12-3, 12-4, 12-5, 12-6 and 12-7. Repair  system  relief  valve  and/or  circuit  relief correct pressure setting. c. A PARTICULAR CYLINDER ASSEMBLY OPERATES SLOWLY. valve and adjust to Step 1. Check for worn or scored cylinder piston rings and/or seals. Refer to the paragraph covering the cylinder malfunctioning. Non-steering cylinders have disassembly procedures in Chapter 12. Step 2. Check inside diameter of cylinder housings to determine if badly scored or nicked. Refer to the paragraph covering the cylinder malfunctioning. Non-steering  cylinders  have disassembly procedures in Chapter 12. Replace cylinders which have nicks and/or scoring which cannot be removed with fine emery cloth. Replace seals and piston rings prior to assembly. 12-3