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 346 of 790

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

HYDRAULIC OIL OVERHEATS -- Continued

0016 00

Figure 30. HDC Control Box

Figure 31. Suspension Relief Valve

Port 3L and Port 3R

SUSPENSION RAISE/LOWER RELIEF VALVE ADJUSTMENT

Reset all HDC solenoid valves by selecting the RESET VALVES button (Figure 30,

item 5) on the HDC control box.

For port 3R relief valve; loosen jam nut (Figure 31, item 1) on port 3R suspension

raise/lower relief valve.

Using LINE UP or LINE DOWN button (Figure 30, item 3), select V15 on the HDC

display (Figure 30, item 2). Close V15 on the HDC display (Figure 30, item 2) by

selecting the CHANGE POSITION button (Figure 30, item 4) on the HDC control box.

With right--hand SUSPENSION CONTROL lever still in the RAISE position, and

observing transducer T--1 hydraulic pressure on the HDC display (Figure 30, item 1),

turn adjusting screw (Figure 31, item 2) clockwise to increase pressure or

counter--clockwise to decrease pressure, until desired pressure is indicated.

Tighten jam nut (Figure 31, item 1).

Continued on page 0016 00--45.

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