TROUBLESHOOTING PROCEDURES - VEHICLE DOES NOT RESPOND TO OPERATOR CONTROLS
Tools and Special Tools
Tool Kit, General Mechanic's: Automotive
Vehicle MASTER power OFF (TM 5-2350-262-10)
Construction Equipment Repairer, 91L (Three)
Vehicle on jack stands (TM 5-2350-262-20)
VEHICLE DOES NOT RESPOND TO OPERATOR CONTROLS
· High oil pressure is present in the M9 ACE hydraulic system. Do not disconnect any
hydraulic system component unless hydraulic system pressure has been relieved. After
hydraulic system has been relieved, wait at least four minutes before disconnecting any
hose or fitting. Ensure each of the hydraulic control levers is moved several times through
all positions and the hydraulic tank dipstick is slowly loosened to relieve pressure. Failure
to comply may result in severe injury or death to personnel.
· Transmission shifting lines are pressurized. Do not disconnect lines, fittings, or
accumulator unless transmission shift control valve pressure has been relieved.
Discharge transmission shift accumulator by moving shift control lever through all forward
and reverse ranges several times, with engine off. Failure to comply may result in severe
injury to personnel.
· Valve bank hydraulic system is supplied by hydraulic ports 13L and 13R. Pressure is
controlled by relief valves 13L and 13R.
· Perform this procedure when all operator controls are inoperative. Refer to vehicle
hydraulic system schematic diagram (FP-1 through FP-6).