TM-5-2350-378-23-P

ARMORED COMBAT EARTHMOVER (ACE), M9; HYDRAULIC DIAGNOSTIC CENTER

TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST

JUNE 2012

TM-5-2350-378-23-P - Page 100 of 644

APRON WILL NOT RAISE - Continued

STEP

3.

Perform V17 test.

a.

Reset all HDC solenoid valves by selecting RESET VALVES button (Figure 2, Item 5) on the HDC control

box.

b.

Wait for transducer T-1 hydraulic pressure on the HDC display (Figure 2, Item 1) to drop below 500 psi

(3,447 kPa).

c.

Using LINE UP or LINE DOWN button (Figure 2, Item 3), select V17 on the HDC display

(Figure 2, Item 2).

d.

Close V17 on the HDC display (Figure 2, Item 2) by selecting the CHANGE POSITION button

(Figure 2, Item 4) on the HDC control box.

e.

Have assistant start engine (if engine is already running) and move APRON CONTROL lever to UP

position (RAISE).

f.

Read transducer T-1 hydraulic pressure on the HDC display (Figure 2, Item 1).

g.

Stop engine; relieve hydraulic pressure.

h.

Reset all HDC solenoid valves by selecting the RESET VALVES button (Figure 2, Item 5) on the HDC

control box.

T00604HDC

5

4

3

2

1

Figure 2.

Hydraulic Diagnostic Center (HDC) Control Box.

TM 5-2350-378-23&P

0008

0008-4