TM 5-2420-231-23-1
0065
Table 1. Loader Lift Does Not Operate Correctly - Continued.
065
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Test Step 5. Test and Adjust Loader
Loader Lift Does Not
Relief Valve
Operate Correctly -
Continued
1. Perform loader relief valve pres-
Loader Relief Valve Pressure Within
sure check (WP 0086).
Specification of 3,000 to 3,200 psi -
Proceed to Test Step 6.
Loader Relief Valve Pressure Not
Within Specification - Proceed to step
2.
2. Adjust loader relief valve to specifi- Loader Relief Valve Adjusts to
cation of 3,000 to 3,200 psi (WP
Specification of 3,000 to 3,200 psi -
Proceed to Test Step 7.
Loader Relief Valve Will Not Adjust
to Specification or Loader Relief
Valve Opening Pressure Is Less
Than 2,600 psi (17,926 kPa) -
Disconnect pressure gauge and hose
from machine.
Replace loader control valve assembly
(WP 0261).
Proceed to Test Step 7.
Test Step 6. Test Loader Control
Valve Leakage.
1. Perform loader test (WP 0086).
While Attempting to Raise and Lower
Loader, Flow Low and Remains Low
(Less Than 1 gpm) - Proceed to step 2.
While Attempting to Raise and Lower
Loader, Initial Flow High Then Goes
Low (Less Than 1 gpm) - Perform
Flowmeter Disconnect Procedure (WP
Replace both loader lift cylinders (WP
0269).
Install right side cover (WP 0176).
Install right-side floor plate cover (WP
0277).
Proceed to Test Step 7.
0065-5