TM  10-3930-638-24&P 3-29.   HYDRAULIC   LIFT   SYSTEM   TROUBLESHOOTING   (cont) MALFUNCTION TEST  OR  INSPECTION CORRECTIVE  ACTION 3. UNABLE TO SIDESHIFT LOAD (ALL OTHER FUNCTIONS NORMAL) (cont) Step 3. Check control valve for hydraulic oil leakage. a. If hydraulic oil leakage is observed at control valve, remove and repair it (para 3-30a). b. If hydraulic oil leakage is not observed at control valve, proceed to step 4. Step 4. Crack (loosen) fittings shown at side. Start engine and operate at idle speed, Place SHIFT control lever in LEFT position and check if hydraulic oil flows from fittings; place SHIFT control lever in RIGHT position and check if hydraulic oil flows from fittings. a. If hydraulic oil does not flow from fittings,  replace  control  valve  (para 3-30a). b. If hydraulic oil flows from fittings, remove  and  repair  sideshift  cylinder assembly (para 3-30c) (tighten fittings). 4.  SIDESHIFT  CYLINDER  ASSEMBLY  OPERATION  SLUGGISH NOTE After completion of each check, turn engine off. Step 1. Check pressure relief valve setting (para 2-48b(2), steps 20 through 22). a. If pressure relief valve setting is not correct, adjust for proper setting (para 2-48b(2), step 23). b. If pressure relief valve setting is okay, proceed to step 2. 3-198