TM-5-2350-378-24-P
HYDRAULIC DIAGNOSTIC CENTER (HDC) SUPPORTING ARMORED COMBAT EARTHMOVER (ACE), M9
TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST
TM-5-2350-378-24-P - Page 132 of 790
TM 5--2350--378--24&P
APRON, BILGE PUMP, AND LEFT--HAND WHEEL CONTROL INOPERATIVE -- Continued
0008 00
Figure 8. HDC Control Box
Figure 9. DCV Bank
MAIN HYDRAULIC PUMP PRESSURE TEST
WARNING
S
Do not operate ejector when personnel are in bowl. Do not work in
bowl unless ejector lock is engaged. Failure to comply may result in
severe injury or death to personnel.
S
Do not stand or work in bowl area unless ejector lock is engaged. Do
not stand in bowl to observe roller guide travels. Failure to comply
may result in severe injury to personnel.
Reset all HDC solenoid valves by selecting the RESET VALVES button (Figure 8, item 5)
on the HDC control box.
Disable ejector by manually closing the ejector inhibit ball valve V23 (Figure 9, item 2) on
the DCV bank. Using LINE UP or LINE DOWN button (Figure 8, item 3), select V1 on
the HDC display (Figure 8, item 2). Close V1 on the HDC display (Figure 8, item 2) by
selecting the CHANGE POSITION button (Figure 8, item 4) on the HDC control box.
Ensure right main hydraulic pressure inhibit valve V21 (Figure 9, item 1) is fully open.
Have assistant start engine and allow engine to idle (750--800 rpm). Slowly close right
main hydraulic pressure inhibit valve V21 (Figure 9, item 1) until transducer T--3 on the
HDC display (Figure 8, item 1) indicates 3,950--4,050 psi (27,235--27,925 kPa).
Open right main hydraulic pressure inhibit valve V21 (Figure 9, item 1).
Stop engine; relieve hydraulic pressure.
Open ejector inhibit ball valve V23 (Figure 9, item 2) on the DCV bank.
Reset all HDC solenoid valves by selecting the RESET VALVES button (Figure 8, item 5)
on the HDC control box.
END OF WORK PACKAGE
0008 00--11/12 blank
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