MWO-5-2350-262-35-4
ARMORED COMBAT EARTHMOVER (ACE), M9
MODIFICATION WORK ORDER
MWO-5-2350-262-35-4 - Page 172 of 207
MWO 5--2350--262--35--4
A--7
APPENDIX A
M9 ACE HDC
MWO CHECK--OUT PROCEDURE -- CONTINUED
18. Valve V17 check:
a)
Push the RESET VALVES button on the control box, and verify all the valves are set to the power OFF
setting and are in the default position. Reference Table A--1.
b)
Use the LINE UP and LINE DOWN buttons to select valve V17. Press CHANGE POSITION to close
valve V17.
c)
Have the vehicle operator move the apron control lever to LOWER until transducer T1 reads less than
500 psig.
d)
Have the vehicle operator move the apron control lever to RAISE until transducer T1 reads greater than
3000 psig. (This indicates that V17 has directed flow from the apron circuit to transducer T1.)
19. Valve V1 check:
a)
Turn off the control box by depressing the POWER button.
b)
Have the vehicle operator stop the engine.
c)
Open valve V23 by moving the handle to a vertical position.
d)
Have the vehicle operator start the engine.
e)
Power up the HDC control box by pressing the POWER button.
f)
Use the LINE UP and LINE DOWN buttons to select valve V1. Press CHANGE POSITION to close
valve V1.
g)
Have vehicle operator move the EJECTOR CONTROL lever forward and backward. Ensure that the
ejector does not move. (This indicates that valve V1 has closed.)
h)
Push the RESET VALVES button on the control box, and verify all the valves are set to the power OFF
setting and are in the default position. Reference Table A--1.
20. When the MWO check--out procedure is complete, shut down the vehicle per TM 5--2350--262--10.
21. Disconnect the HDC control box and umbilical cable assembly W4 from the umbilical cable disconnect panel.
22. Stow umbilical cable assembly W4, 12496956, in a clean, dry area of vehicle, protected from environment.
23. Secure HDC control box in stowage fixture in driver’s compartment.
NOTE
The information on the following pages provides preliminary operating
instructions for the M9 ACE Hydraulic Diagnostic Center (HDC). Complete
information for using the HDC is provided in TM 5--2350--378--24&P.
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