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 231 of 644
HYDRAULIC OIL OVERHEATS - Continued
CONDITION/INDICATION
Is solenoid valve V1 on HDC system primary manifold or ejector leaking excessively?
DECISION
YES - Replace or repair leaking components, as applicable; solenoid valve V1 on HDC primary manifold
(WP
0035) or ejector cylinder (TM 5-2350-262-20).
NO - Go to Step (21).
STEP
21.
Perform apron relief valve pressure test (port 19) using HDC.
a.
Reset all HDC solenoid valves by selecting RESET VALVES button (Figure 26, Item 1) on HDC control
box.
b.
Move ejector forward, engage ejector lock.
c.
Using LINE UP or LINE DOWN button (Figure 26, Item 3), select V17 on HDC display
(Figure 26, Item 2).
d.
Close V17 on HDC display (Figure 26, Item 2) by selecting CHANGE POSITION button
(Figure 26, Item 4) on HDC control box.
e.
Have assistant start engine and hold APRON CONTROL lever in UP position.
f.
Read transducer T-1 hydraulic pressure on HDC display (Figure 26, Item 1).
g.
If pressure is low, adjust apron RAISE relief valve.
CONDITION/INDICATION
Is observed transducer T-1 hydraulic pressure 3,450-3,550 psi (23,780-24,475 kPa)?
DECISION
YES - Stop engine; relieve hydraulic pressure. Go to Step (23).
NO - Go to Step (22).
TM 5-2350-378-23&P
0015
0015-29
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