TM  10-3930-638-24&P 2-55.   HYDRAULIC   LIFT   SYSTEM   TROUBLESHOOTING   (cont) MALFUNCTION TEST  OR  INSPECTION CORRECTIVE  ACTION 4. LIFT, TILT, SHIFT, OR ROTATE TOO SLOW Step  1. Check  hoses,  lines  and  fittings  between  hydraulic  reservoir,  pump.  and  control  valve  for  oil  leaks. a. If oil leakage is observed, tighten fittings; if hoses or lines are damaged, replace (para 2-56f(1)). b. If oil leakage is not observed, proceed to step 2. Step 2. Check setting of relief valve (para 2-48 b(2), step 20). a. Adjust pressure relief valve if setting is not 2500-2550 PSI (para 2-48b(2), step 23). b. [f pressure relief valve setting is okay, proceed to step 3. Step  3.  Check  hydraulic  reservoir  oil  level. a. If oil level is not between FULL and ADD marks on dipstick with mast lowered, add hydraulic oil (refer to current lubrication order). b. If oil level is okay, proceed Step  4.  Perform  paragraph  2-56a. Same as in paragraph 2-56a. 5. LOAD CREEPS WHILE TILTING to step 4. Step 1. Check hoses, lines and fittings between control valve and tilt cylinder assembly for oil leaks. a. If oil leakage is observed, tighten fittings; if hoses or lines are damaged, replace (para 2-56f(1)). b. If oil leakage is not observed, proceed to step 2. Step 2. Perform step 4 of paragraph 2.56a. Same as steps 5 and 6 of paragraph 2-56a. 2-392