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 270 of 790
TM 5--2350--378--24&P
FRONT CORNER (LEFT OR RIGHT) RAISES IN SPRUNG, BUT NOT UNSPRUNG MODE --
Continued
0013 00
Figure 27. HDC Control Box
Figure 28. DCV Bank
MAIN HYDRAULIC PUMP TEST -- CONTINUED
Stop engine; relieve hydraulic pressure.
Disable ejector by manually closing the ejector inhibit ball valve V23 (Figure 28, item 2)
on the DCV bank. Using LINE UP or LINE DOWN button (Figure 27, item 3), select V1
on the HDC display (Figure 27, item 2). Close V1 on the HDC display (Figure 27,
item 2) by selecting the CHANGE POSITION button (Figure 27, item 4) on the HDC
control box.
Ensure right main hydraulic pressure inhibit valve V21 (Figure 28, item 1) is fully
opened.
Have assistant start engine and allow engine to idle (750--800 rpm). Slowly close right
main hydraulic pressure inhibit valve V21 (Figure 28, item 1), until transducer T--3
hydraulic pressure on the HDC display (Figure 27, item 1) reaches 3,950--4,050 psi
(27,235--27,925 kPa).
Fully open right main hydraulic pressure inhibit valve V21 (Figure 28, item 1).
Stop engine; relieve hydraulic pressure.
Open ejector inhibit ball valve V23 (Figure 28, item 2) on the DCV bank. Using LINE UP
or LINE DOWN button (Figure 27, item 3), select V1 on the HDC display (Figure 27,
item 2). Open V1 on the HDC display (Figure 27, item 2) by selecting the CHANGE
POSITION button (Figure 27, item 4) on the HDC control box.
END OF WORK PACKAGE
0013 00--45/46 blank
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