SPADE

TM 9-2350-238-20-1

2-11. TROUBLESHOOTING INFORMATION (CONT).

Table 2-3. UNIT TROUBLESHOOTING (CONT)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

SPADE

SPADE DOES NOT RAISE OR LOWER.

97.

Start engine. Check that spade cylinder locks are unlocked.

Step 1.

Set HYD PUMP/PTO CLUTCH switch to ON. Open spade hydraulic

system shutoff valve.

Remove rear hydraulic access cover for access to spade hydraulic

Step 2.

components. Refer to page 2-979. Check for leaks and damaged or clogged

hoses and fittings.

Tighten loose connections.

b. Replace all leaking or damaged components. Refer to page 2-979.

Check for damaged or faulty pressure reducer or hull hydraulic relief valve.

Step 3.

Replace pressure reducer or hull hydraulic relief valve. Refer to

Step 4.

Check for damaged or faulty spade control valve.

Replace spade control valve. Refer to page 2-979.

Check for damaged or faulty spade relief valve.

Step 5.

Replace spade relief valve. Refer to page 2-979.

Step 6.

Check hydraulic cylinder assembly for leaks.

If leaks exist, replace hydraulic cylinder assembly. Refer to page 2-967.

If problem still exists, notify direct support maintenance.

Step 7.

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