HYDRAULIC SYSTEM TESTS, INSPECTIONS, AND ADJUSTMENTS - CONTINUED
PILOT PRESSURE TO MAIN CONTROL VALVE CHECK - CONTINUED
If pressure still is not in specification, perform main control valve calibration.
If pressure still is not in specification, check dead engine lower valve for leaks and repair any leaks.
If pressure still is not in specification, check hydraulic lockout solenoid for leaks or damage and repair any leaks.
If pressure reducing valve(s) are damaged, replace main control valve (WP 0212 00).
If pressure still is not in specification, perform main relief valve (load sensing) test and adjustment. If system will not
build correct pressure, replace piston pump (WP 0212 00).
If pilot oil pressure is NOT within specification:
Stop engine (TM 5-3805-291-10).
Adjust pressure reducing valve.
PRESSURE REDUCING VALVE ADJUSTMENT
N OT E
Pressure reducing valve reduces pressure to pilot system.
Start and run engine at low idle (TM 5-3805-291-10).
Position lift arms (19) on jack stands.