LIFT, TILT, SHIFT, OR ROTATE TOO SLOW - TM-10-3930-638-24-P0430

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

Check hoses, lines and fittings between hydraulic reservoir, pump. and control valve for oil leaks.

Step 1.

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 to step 4.

5. LOAD CREEPS WHILE TILTING

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.