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 224 of 790

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

EJECTOR DOES NOT EXTEND OR RETRACT -- Continued

0012 00

Figure 28. HDC Control Box

EJECTOR CYLINDER LEAKAGE TEST -- CONTINUED

Have assistant start engine and hold EJECTOR CONTROL lever in BACK position for

one minute. Mark position of ejector at side of hull and continue to hold valve lever in

BACK position for one more minute. Check position of ejector while still holding valve

lever in BACK position. If ejector has moved forward more than 0.5 in. (13mm), the

ejector cylinder is leaking excessively. If cylinder moves aft more than 0.5 in. (13mm),

solenoid valve V1 on HDC primary manifold valve is leaking.

Open main ejector valve; by using LINE UP or LINE DOWN button (Figure 28, item 2),

select V1 on the HDC display (Figure 28, item 1). Open V1 on the HDC display

(Figure 28, item 1), by selecting the CHANGE POSITION button (Figure 28, item 3) on

the HDC control box.

END OF WORK PACKAGE

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