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 332 of 790
TM 5--2350--378--24&P
0016 00--29
HYDRAULIC OIL OVERHEATS -- Continued
0016 00
MAIN HYDRAULIC PUMP PRESSURE TEST -- CONTINUED
Stop engine; relieve hydraulic pressure.
Ensure right main hydraulic pressure inhibit valve V21 (Figure 18, item 2) is fully
opened.
Disable ejector by manually closing the ejector inhibit ball valve V23 (Figure 18, item 1)
on the DCV bank. Using LINE UP or LINE DOWN button (Figure 19, item 3), select V1
on the HDC display (Figure 19, item 2). Close V1 on the HDC display (Figure 19,
item 2) by selecting the CHANGE POSITION button (Figure 19, item 4) on the HDC
control box.
Have assistant start engine and allow engine to idle (750--800 rpm). Slowly close right
main hydraulic pressure inhibit valve V21 (Figure 18, item 2), until transducer T--3
hydraulic pressure on the HDC display (Figure 19, item 1) indicates 3,950--4,050 psi
(27,235--27,925 kPa).
Open right main hydraulic pressure inhibit valve V21 (Figure 18, item 2) fully.
Stop engine; relieve hydraulic pressure.
Open ejector inhibit ball valve V23 (Figure 18, item 1) on the DCV bank. Using LINE UP
or LINE DOWN button (Figure 19, item 3), select V1 on the HDC display (Figure 19,
item 2). Open V1 (Figure 19, item 2) on the HDC display by selecting the CHANGE
POSITION button (Figure 19, item 4) on the HDC control box.
Figure 18. DCV Bank
Figure 19. HDC Control Box
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