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 364 of 790

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

0016 00--61

HYDRAULIC OIL OVERHEATS -- Continued

0016 00

APRON RELIEF VALVE ADJUSTMENT -- CONTINUED

Disable ejector; manually close V23 (Figure 45, item 1) on the DCV bank. Using LINE

UP or LINE DOWN button (Figure 44, item 3), select V1 on the HDC display (Figure 44,

item 2). Close V1 on the HDC display (Figure 44, item 2) by selecting the CHANGE

POSITION button (Figure 44, item 4) on the HDC control box.

Using LINE UP or LINE DOWN button (Figure 44, item 3), select V17 on the HDC

display (Figure 44, item 2). Close V17 on the HDC display (Figure 44, item 2) by

selecting the CHANGE POSITION button (Figure 44, item 4) on the HDC control box.

Start engine.

As assistant holds APRON CONTROL lever in the UP position, loosen jam nut

(Figure 46, item 1) while observing transducer T--1 hydraulic pressure on the HDC

display (Figure 44, item 1).

Rotate adjusting screw (Figure 46, item 2) clockwise to increase pressure; counter--

clockwise to decrease pressure, as necessary to obtain desired pressure. Tighten jam

nut (Figure 46, item 1).

Stop engine; relieve hydraulic pressure.

Manually open V23 (Figure 45, item 1) on the DCV bank. Using LINE UP or LINE

DOWN button (Figure 44, item 3), select V1 on the HDC display (Figure 44, item 2).

Open V1 on the HDC display (Figure 44, item 2) by selecting the CHANGE POSITION

button (Figure 44, item 4) on the HDC control box. Using LINE UP or LINE DOWN

button (Figure 44, item 3), select V17 on the HDC display (Figure 44, item 2). Open

V17 on the HDC display (Figure 44, item 2) by selecting the CHANGE POSITION button

(Figure 44, item 4) on the HDC control box.

Figure 44. HDC Control Box

Figure 45. DCV Bank

Figure 46. Apron Relief Valve