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 104 of 790

TM 5--2350--378--24&P

0007 00--11

ALL HYDRAULIC FUNCTIONS INOPERATIVE -- Continued

0007 00

Figure 7. HDC Control Box

Figure 8. DCV Bank

MAIN HYDRAULIC PUMP TEST -- CONTINUED

Have assistant start engine and allow engine to idle (750--800 rpm). Slowly close right

main hydraulic pressure inhibit valve V21 (Figure 8, item 1), until transducer T--3

pressure on the HDC display (Figure 7, item 1) indicates 3,950--4,050 psi

(27,235--27,925 kPa).

Fully open right main hydraulic pressure inhibit valve V21 (Figure 8, item 1).

Stop engine; relieve hydraulic pressure.

Open ejector inhibit ball valve V23 (Figure 8, item 2) on the DCV bank. Using LINE UP

or LINE DOWN button (Figure 7, item 3), select V1 on the HDC display (Figure 7,

item 2). Open V1 on the HDC display (Figure 7, item 2) by selecting the CHANGE

POSITION button (Figure 7, item 4) on the HDC control box.