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 342 of 790

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

HYDRAULIC OIL OVERHEATS -- Continued

0016 00

Figure 28. HDC Control Box

SUSPENSION RAISE/LOWER RELIEF VALVE TEST

Reset all HDC solenoid valves by selecting the RESET VALVES button (Figure 28,

item 5) on the HDC control box.

NOTE

This test is done at both right--hand and left--hand suspension

raise/lower relief valves. For the right--hand valve (port 3R),

actuate the right--hand SUSPENSION CONTROL lever. For the

left--hand valve (port 3L), actuate the left--hand SUSPENSION

CONTROL lever.

For 3R; using LINE UP or LINE DOWN button (Figure 28, item 3), select V15 on the

HDC display (Figure 28, item 2). Close V15 on the HDC display (Figure 28, item 2) by

selecting the CHANGE POSITION button (Figure 28, item 4) on the HDC control box.

Have assistant start engine. Move right--hand SUSPENSION CONTROL lever to

RAISE. Read transducer T--1 hydraulic pressure on the HDC display (Figure 28,

item 1).

Using LINE UP or LINE DOWN button (Figure 28, item 3), select V15 on the HDC

display (Figure 28, item 2). Open V15 on the HDC display (Figure 28, item 2) by

selecting the CHANGE POSITION button (Figure 28, item 4) on the HDC control box.

Reset all HDC solenoid valves by selecting the RESET VALVES button (Figure 28,

item 5) on the HDC control box.

For 3L; using LINE UP or LINE DOWN button (Figure 28, item 3), select V16 on the

HDC display (Figure 28, item 2). Close V16 on the HDC display (Figure 28, item 2) by

selecting the CHANGE POSITION button (Figure 28, item 4) on the HDC control box.

Continued on page 0016 00--41.

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