MWO-5-2350-262-35-4
ARMORED COMBAT EARTHMOVER (ACE), M9
MODIFICATION WORK ORDER
MWO-5-2350-262-35-4 - Page 167 of 207
MWO 5--2350--262--35--4
A--2
APPENDIX A
M9 ACE HDC
MWO CHECK--OUT PROCEDURE -- CONTINUED
2. Valve V23 check:
a)
Stop engine.
b)
Place valve V23 in the closed position. (Handle horizontal.)
c)
Start engine.
d)
Confirm that the ejector does not extend or retract. (This indicates that V23 is working properly.)
e)
Stop engine and ensure that engine is off before connecting HDC control box.
3. Control box power--up:
CAUTION
Do not activate the vehicle’s hydraulic control levers or depress any buttons on the HDC
control box unless directed by this procedure. Failure to follow this caution may cause
equipment damage.
NOTE
Steps a and b below apply to Figures 5--20 and 5--21.
a)
Connect umbilical cable assembly connector W4P4 to connector W1J1 on umbilical cable disconnect
panel, connector W4P5 to connector W2J1 on umbilical cable disconnect panel, and connector W4P6 to
connector W3J1 on umbilical cable disconnect panel as shown.
b)
Connect three connectors on other end of umbilical cable assembly W4 to HDC control box as shown in
Figure 5--18. Connect umbilical cable assembly connector W4P1 to connector J1 on HDC control box,
connector W4P2 to connector J2 on HDC control box, and connector W4P3 to connector J3 on control
box.
c)
Power up the HDC control box by pressing the POWER button.
d)
Confirm that the control box displays the transducer number, pressure, valve number, valve status
(PWR), and valve position status similar to Table A--1. (Note: a CIRCUIT FAULT message indicates a
disconnected wire harness or defective component. Check all connections in the event of a CIRCUIT
FAULT message).
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