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 390 of 790

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

0016 00--87

HYDRAULIC OIL OVERHEATS -- Continued

0016 00

Figure 62. HDC Control Box

Figure 63. Suspension Raise/Lower Relief

Valve 3L and Relief Valve 3R

SUSPENSION RAISE/LOWER RELIEF VALVE ADJUSTMENT -- CONTINUED

For 3R; Using LINE UP or LINE DOWN button (Figure 62, item 3), select V15 on the

HDC display (Figure 62, item 2). Close V15 on the HDC display (Figure 62, item 2) by

selecting the CHANGE POSITION button (Figure 62, item 4) on the HDC control box.

Loosen jam nut (Figure 63, item 1) on port 3R of suspension raise/lower relief valve.

With right--hand SUSPENSION CONTROL lever in the RAISE position, while observing

transducer T--1 hydraulic pressure on the HDC display (Figure 62, item 1), turn

suspension raise/lower relief valve 3R adjusting screw (Figure 63, item 2), clockwise to

increase pressure or counterclockwise to decrease pressure, until desired pressure is

indicated.

Tighten jam nut (Figure 63, item 1).

Using LINE UP or LINE DOWN button (Figure 62, item 3), select V15 on the HDC

display (Figure 62, item 2). Open V15 on the HDC display (Figure 62, item 2) by

selecting the CHANGE POSITION button (Figure 62, item 4) on the HDC control box.

For 3L; repeat the above steps closing and opening solenoid valve V16, using the

left--hand SUSPENSION CONTROL lever, adjusting the suspension raise/lower relief

valve 3L adjusting screw (Figure 63, item 2) for port 3L, and monitoring the hydraulic

pressure at transducer T--1.

Stop engine; relieve hydraulic pressure.