HYDRAULIC SYSTEM TESTS, INSPECTIONS, AND ADJUSTMENTS - CONTINUED
GENERAL - CONTINUED
Turn engine start switch to ON position without starting engine. Move control levers through full range of travel (TM 5-
3805-290-10). Repeat movement of levers several times to discharge accumulator for pilot system. This will relieve any
pressure that may be present in work tool hydraulic system.
PISTON PUMP PRESSURE TEST AND ADJUSTMENT
Purging Process for Implement System.
Remove left chassis covers (WP 0107 00) for access to piston pump (1).
Connect end of hose to test port (2) for piston pump (1) signal pressure.
Place other end of hose assembly into hydraulic tank.
Move work tool to RACK BACK position. Hold work tool in RACK BACK position for 30 seconds (TM 5-3805-
Remove hose assembly from tank and pump.
Install cap on hydraulic tank (TM 5-3805-290-
Signal Limiter Pressure.
Connect pressure gage to hose.
Connect other end of hose assembly to test port
(2) for piston pump (1) signal pressure.
Adjust pump cutoff pressure to 4,350 psi (30,000 kPa). Refer to step 3.