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 168 of 790

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

0010 00--15

BUMP STOPS INOPERATIVE -- Continued

0010 00

Figure 8. HDC Control Box

BUMP STOP CIRCUIT 11 TEST

Reset all HDC solenoid valves by selecting the RESET VALVES button (Figure 8,

item 5) on the HDC control box.

Have assistant start engine and move SPRUNG/UNSPRUNG lever to UNSPRUNG.

For left bump stop circuit; Using LINE UP or LINE DOWN button (Figure 8, item 3),

select V10 on the HDC display (Figure 8, item 2). Close V10 on the HDC display

(Figure 8, item 2), by selecting the CHANGE POSITION button (Figure 8, item 4) on the

HDC control box. Read transducer T10 hydraulic pressure on the HDC display

(Figure 8, item 1).

For right bump stop circuit; Using LINE UP or LINE DOWN button (Figure 8, item 3),

select V9 on the HDC display (Figure 8, item 2). Close V9 on the HDC display (Figure 8,

item 2), by selecting the CHANGE POSITION button (Figure 8, item 4) on the HDC

control box. Read transducer T--11 hydraulic pressure on the HDC display (Figure 8,

item 1).

Reset all HDC solenoid valves by selecting the RESET VALVES button (Figure 8,

item 5) on the HDC control box.

Stop engine and relieve hydraulic pressure.