TM 9-2350-256-34
0010 00
CORRECTIVE ACTION Continued
14. Inspect for collapsed main hydraulic pump suction hose.
a.
Replace suction hose (TM 9-2350-256-20).
WARNING
Test components must be capable of withstanding a working pressure of 19502050 psi (13,44514,135
kPa) (step 15 only).
NOTE
After performing main hydraulic pump test, return all plumbing to original configuration.
15. Test main hydraulic pump. Remove check valve and tee between hose no. 4A and hose no. 4B. Install
main hydraulic pump pressure tester kit between hose no. 4A and hose no. 4B. Install test pressure
gage in tee.
CAUTION
Make sure that the load valve is in full open position before performing test. When performing main
hydraulic pump pressure test, do not restrict pressure flow beyond operating pressure.
With main engine operating at 1800 rpm, operating pressure should be 19502050 psi (13,44514,135
kPa) when restricting flow using load valve.
After testing, remove hose no. 4B from pump no. 1. Remove pilot-operated relief and unloading valve
assembly from pump port no. 44. Install hose no. 4B on pump port no. 44.
With main engine operating at 1800 rpm, operating pressure should be 19502050 psi (13,44514,135
kPa) when restricting flow using load valve.
a.
Remove mechanical transmission and main hydraulic pump assembly (WP 0065 00).
b.
Replace main hydraulic pump (WP 0065 00).
END OF WORK PACKAGE
0010 00-3/4 blank
