TM 5-2420-231-23-1
0078
Table 1. Left Stabilizer Does Not Operate Correctly - Continued.
078
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Test Step 3. Inspect Left Stabilizer
Left Stabilizer Does Not
Load Check Valve.
Operate Correctly -
Continued
Inspect left stabilizer load check valve
Left Stabilizer Load Check Valve OK
- Proceed to Test Step 4.
(Figure 4, Item 1) (WP 0239) for
damage and Class III leaks.
Left Stabilizer Load Check Valve
Damaged or Leaking - Replace left
stabilizer load check valve (WP 0239).
Proceed to Test Step 16.
Figure 4. Stabilizer Check Valve.
0078
Test Step 4. Inspect Left Stabilizer
Cylinder.
Inspect left stabilizer cylinder (WP
Left Stabilizer Cylinder OK - Proceed
0272) for damage and Class III leaks.
to Test Step 5.
Left Stabilizer Cylinder Damaged or
Leaking From Rod or Cylinder -
Replace left stabilizer cylinder (WP
0272).
Proceed to Test Step 16.
Test Step 5. Check Pilot Pressure.
1. Start engine (TM 5-2420-231-10).
2. Perform pilot pressure test (WP
Pilot Pressure 350 to 550 psi -
Replace backhoe control valve
assembly (WP 0263).
Proceed to Test Step 16.
Pilot Pressure Less Than 350 psi -
Replace pilot control valve assembly
(WP 0264).
Proceed to Test Step 16.