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 378 of 790

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

0016 00--75

HYDRAULIC OIL OVERHEATS -- Continued

0016 00

Figure 53. HDC Control Box

SUSPENSION RELIEF VALVE PRESSURE TEST

WARNING

Before performing any hydraulic troubleshooting in bowl, move

ejector forward and engage the ejector lock. Failure to comply may

result in severe injury or death to personnel.

Reset all HDC solenoid valves by selecting the RESET VALVES button (Figure 53,

item 5) on the HDC control box.

Start engine; move ejector forward, engage ejector lock.

Stop engine and relieve hydraulic pressure.

Using LINE UP or LINE DOWN button (Figure 53, item 3) on the HDC control box,

select V5 on the HDC display (Figure 53, item 2). Using the CHANGE POSITION

button (Figure 53, item 4), close V5 on the HDC display (Figure 53, item 2). Repeat

steps and close V12 and V13, and open V19.

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

right--hand SUSPENSION CONTROL lever to LOWER. Read transducer T--13

hydraulic pressure on the HDC display (Figure 53, item 1).

Using LINE UP or LINE DOWN button (Figure 53, item 3) on the HDC control box,

select V5 on the HDC display (Figure 53, item 2). Using the CHANGE POSITION

button (Figure 53, item 4), open V5 on the HDC display (Figure 53, item 2). Repeat

steps and open V12 and V13, and close V19.