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 110 of 790

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

0007 00--17

ALL HYDRAULIC FUNCTIONS INOPERATIVE -- Continued

0007 00

Figure 12. HDC Control Box

Figure 13. DCV Bank

Figure 14. Main Pump Relief Valve 13R

13R MAIN PUMP RELIEF VALVE ADJUSTMENT -- CONTINUED

Loosen jam nut (Figure 14, item 1). Read transducer T--3 hydraulic pressure on the

HDC display (Figure 12, item 1), as assistant moves right--hand SUSPENSION

CONTROL lever to RAISE and EJECTOR CONTROL lever to BACK. Rotate relief valve

adjustment (Figure 14, item 2) clockwise to increase pressure; counterclockwise to

decrease pressure.

When transducer T--3 pressure indicates 3,950--4,050 psi (27,235--27,925 kPa) on the

HDC display (Figure 12, item 1), tighten jam nut (Figure 14, item 1).

Verify pressure is now within limits by having assistant move right--hand SUSPENSION

CONTROL lever to RAISE and EJECTOR CONTROL lever to BACK. Read transducer

T--3 hydraulic pressure on the HDC display (Figure 12, item 1).

Stop engine; relieve hydraulic pressure.

Manually open ejector inhibit ball valve V23 (Figure 13, item 1) on the DCV bank. Using

LINE UP or LINE DOWN button (Figure 12, item 3), select V1 on the HDC display

(Figure 12, item 2). Open V1 on the HDC display (Figure 12, item 2) by selecting the

CHANGE POSITION button (Figure 12, item 4) on the HDC control box.