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 348 of 790

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

0016 00--45

HYDRAULIC OIL OVERHEATS -- Continued

0016 00

SUSPENSION RAISE/LOWER RELIEF VALVE ADJUSTMENT -- CONTINUED

Using LINE UP or LINE DOWN button (Figure 32, item 3), select V15 on the HDC

display (Figure 32, item 2). Open V15 on the HDC display (Figure 32, item 2) by

selecting the CHANGE POSITION button (Figure 32, item 4) on the HDC control box.

Reset all HDC solenoid valves by selecting the RESET VALVES button (Figure 32,

item 5) on the HDC control box.

For port 3L relief valve; loosen jam nut (Figure 33, item 1) on port 3L suspension

raise/lower relief valve.

Using LINE UP or LINE DOWN button (Figure 32, item 3), select V16 on the HDC

display (Figure 32, item 2). Close V16 on the HDC display (Figure 32, item 2) by

selecting the CHANGE POSITION button (Figure 32, item 4) on the HDC control box.

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

observing transducer T--1 hydraulic pressure on the HDC display (Figure 32, item 1),

turn adjusting screw (Figure 33, item 2) clockwise to increase pressure or

counterclockwise to decrease pressure until desired pressure is indicated.

Tighten jam nut (Figure 33, item 1).

Using LINE UP or LINE DOWN button (Figure 32, item 3), select V16 on the HDC

display (Figure 32, item 2). Open V16 on the HDC display (Figure 32, item 2) by

selecting the CHANGE POSITION button (Figure 32, item 4) on the HDC control box.

Stop engine; relieve hydraulic pressure.

Figure 32. HDC Control Box

Figure 33. Suspension Relief Valve

Port 3L and Port 3R