TM-5-2350-378-24-P

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

WINCH AND RIGHT--HAND WHEEL CONTROL INOPERATIVE -- Continued

0020 00

Figure 9. HDC Control Box

Figure 10. DCV Bank

MAIN HYDRAULIC PUMP PRESSURE TEST

WARNING

Before performing any troubleshooting in bowl, move ejector

forward and engage ejector lock. Failure to comply may result in

severe injury or death to personnel.

Ensure left main hydraulic pressure inhibit valve V22 is fully opened

prior to starting vehicle. A fully or partially closed valve will cause

immediate high pressure. Failure to comply may result in damage to

equipment and injury to personnel.

Stop engine; relieve hydraulic pressure.

Reset all HDC solenoid valves by selecting the RESET VALVES button (Figure 9,

item 5) on the HDC control box.

Disable ejector by manually closing the ejector inhibit ball valve V23 (Figure 10, item 2)

on the DCV bank. Using LINE UP or LINE DOWN button (Figure 9, item 3), select V1

on the HDC display (Figure 9, item 2). Close V1 on the HDC display (Figure 9, item 2)

by selecting the CHANGE POSITION button (Figure 9, item 4) on the HDC control box.

Ensure left main hydraulic pressure inhibit valve V22 (Figure 10, item 1) is fully opened.

Have assistant start engine and allow engine to idle (750--800 rpm). Slowly close left

main hydraulic pressure inhibit valve V22 (Figure 10, item 1), until transducer T--4 on the

HDC display (Figure 9, item 1) reaches 3,950--4,050 psi (27,235--27,925 kPa).

Open left main hydraulic pressure inhibit valve V22 (Figure 10, item 1) fully.

Using LINE UP or LINE DOWN button (Figure 9, item 3), select V1 on the HDC display

(Figure 9, item 2). Open V1 (Figure 9, item 2) on the HDC display by selecting the

CHANGE POSITION button (Figure 9, item 4) on the HDC control box.

Stop engine; relieve hydraulic pressure.

Open ejector inhibit ball valve V23 (Figure 10, item 2).

END OF WORK PACKAGE

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