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 370 of 790

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

0016 00--67

HYDRAULIC OIL OVERHEATS -- Continued

0016 00

Figure 49. Main Hydraulic Accumulator

MAIN HYDRAULIC ACCUMULATOR PRESSURE TEST

WARNING

S

High--pressure nitrogen gas is used in this equipment. Keep hands

and face away from valves and hose ends. Failure to comply may

result in severe injury or death to personnel.

S

Do not breathe nitrogen gas. Failure to comply may result in severe

injury or death to personnel.

Connect pressure measuring device (Figure 49, item 4) to bleed valve (Figure 49,

item 10) on charging harness (Figure 49, item 12). Close shutoff valve (Figure 49,

item 3).

Open nitrogen tank valve (Figure 49, item 1) and adjust regulator valve (Figure 49,

item 2) to 50 psi (353 kPa).

Open shutoff valve (Figure 49, item 3) for about 10 seconds to clear charging hoses.

Close valve (Figure 49, item 3).

Remove valve guard (Figure 49, item 11). Remove charge valve cap (Figure 49, item 8)

from charge valve assembly (Figure 49, item 6) on accumulator (Figure 49, item 9).

Loosely connect adapter valve (Figure 49, item 5) to charge valve (Figure 49, item 6)

and again open shutoff valve (Figure 49, item 3) for about 10 seconds. Close shutoff

valve (Figure 49, item 3). Fully tighten adapter valve (Figure 49, item 5).

NOTE

Accumulator gas valve is fully open after about 2--1/2 turns.

Open charge valve (Figure 49, item 6) by loosening nut (Figure 49, item 7). Read

pressure measuring device (Figure 49, item 4).