SIDESHIFT CYLINDER ASSEMBLY OPERATION SLUGGISH

TM 10-3930-638-24&P

3-29. HYDRAULIC LIFT SYSTEM TROUBLESHOOTING (cont)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

4. SIDESHIFT CYLINDER ASSEMBLY OPERATION SLUGGISH (cont)

Step 2. Start engine and operate at idle speed.

Place SHIFT control lever in LEFT position until forks are in extreme left position.

Turn engine off and operate control levers several times to relieve hydraulic pressure.

Disconnect and cap hose fitting connected to rod end of sideshift cylinder assembly.

CAUTION

Don't place SHIFT control lever in RIGHT position in following

steps; hydraulic oil will flow out of disconnected hose fitting.

Start engine and operate at idle speed.

Place SHIFT control lever in LEFT position and hold while an assistant checks for hydraulic oil

leakage at side shift cylinder assembly port from which fitting was disconnected.

a. Remove sideshift cylinder assembly and repair piston assembly (para 3-30c) if hydraulic

oil leakage is observed.

b. If hydraulic oil leakage is not observed at side shift cylinder assembly port, remove and

repair control valve (para 3-30a).

5. UNABLE TO TILT LOAD (ALL OTHER FUNCTIONS NORMAL)

NOTE

After completion of each check, turn engine off.

Step 1.

Check tilt cylinder assemblies for hydraulic oil leakage.

a. If hydraulic oil leakage at tilt cylinder assemblies is observed, remove and repair it (para 3-30b).

b. If hydraulic oil leakage is not observed at tilt cylinder assemblies, proceed to step 2.

Step 2. Check hose assemblies between tilt cylinder assemblies and control valve for hydraulic oil leakage.

a. If hydraulic oil leakage is observed at hose assemblies, replace leaking hose assemblies

b. If hydraulic oil leakage is not observed, proceed to step 3.

Step 3. Check control valve for hydraulic oil leakage.

a. [f hydraulic oil leakage is observed at control valve, remove and repair it (para 3-30a).

b. If hydraulic oil leakage is not observed, proceed to step 4.