TM 5-3805-298-23-2
0152
Table 1. Quick Coupler Will Not Operate - Continued.
0152
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Coupler Hoses Are Not Leaking
Quick Coupler Will Not
5. Visually inspect coupler hoses for
Proceed to Test Step 7.
Operate - Continued
Class III leaks (WP 0173). Check
ground for signs of leakage.
Coupler Hoses Are Leaking
Tighten or replace coupler hoses
Proceed to Test Step 15.
Test Step 7. Inspect Hydraulic
Cylinders.
Quick Coupler Cylinder Is Not
Visually inspect quick coupler cylinder
Leaking or Damaged Proceed to
for Class III leaks or damage
Test Step 8.
(WP 0390). Check ground for signs of
leakage.
Quick Coupler Cylinder Is Leaking
and/or Damaged Replace quick
coupler cylinder (WP 0390).
Proceed to Test Step 15.
Test Step 8. Perform Steering Piston
Pump Pressure Tests and
Adjustment.
1. Perform Steering Piston Pump
Margin Pressure Is Correct
Margin Pressure Test (WP 0166).
Replace quick coupler control manifold
(WP 0372).
Proceed to Test Step 15.
Margin Pressure Is Not Correct
Proceed to step 2.
2. Perform Steering Piston Pump
Standby Pressure Is Correct
Low-Pressure Standby Test
Replace quick coupler control manifold
(WP 0372).
Proceed to Test Step 15.
Standby Pressure Is Not Correct
Proceed to step 3.
3. Perform Steering High-Pressure
Stall Pressure Is Correct Replace
Stall Test (WP 0166).
quick coupler control manifold
(WP 0372).
Proceed to Test Step 15.
Stall Pressure Is Not Correct
Proceed to step 4.
4. Adjust pressure compensator
Pressure Compensator Adjusts to
Correct Pressure Proceed to Test
Step 15.
Pressure Compensator Does Not
Adjust to Correct Pressure
Replace steering and pilot pump
(WP 0335).
Proceed to Test Step 15.
0152-5