TM 5-2350-378-23&P
0012
FRONT CORNER (LEFT OR RIGHT) RAISES IN SPRUNG, BUT NOT UNSPRUNG MODE - Continued
STEP
9.
Perform solenoid valve V11 or V5 (as applicable) pressure check.
a.
Reset all HDC solenoid valves by selecting RESET VALVES button (Figure 6, Item 5) on HDC control
box.
b.
Using LINE UP or LINE DOWN button (Figure 6, Item 3), select V1 on HDC display (Figure 6, Item 2).
c.
Close V1 on HDC display (Figure 6, Item 2) by selecting CHANGE POSITION button
(Figure 6, Item 4) on HDC control box.
d.
Verify that transducer T-1 hydraulic pressure on HDC display (Figure 6, Item 1), reads less than 500 psi
(3,447.379 kPa).
e.
Have assistant start engine and place vehicle in UNSPRUNG mode.
f.
For solenoid valve V11 (circuit 17L): Have assistant move left SUSPENSION CONTROL lever to
LOWER.
g.
Verify that transducer T-1 hydraulic pressure on HDC display (Figure 6, Item 1), reads greater than 3,000
psi (20,684.27 kPa).
NOTE
This indicates that V11 has directed flow from suspension to transducer T1, which now
reads system relief valve pressure setting.
h.
If pressure is 3,000 psi (20,684.27 kPa) or more, solenoid valve V11 on primary manifold is bad.
i.
For solenoid valve V5 (circuit 17R): Have assistant move the right SUSPENSION CONTROL lever to
LOWER.
j.
Verify that transducer T-1 hydraulic pressure on HDC display (Figure 6, Item 1), reads greater than 3,000
psi (20,684.27 kPa).
NOTE
This indicates that V5 has directed flow from the suspension to transducer T-1, which
now reads system relief valve pressure setting.
k.
If pressure is 3,000 psi (20,684.27 kPa) or more, solenoid valve V11 on primary manifold is bad.
l.
Stop engine; relieve hydraulic pressure.
CONDITION/INDICATION
Is transducer T-1 hydraulic pressure greater than 3,000 psi (20,684 kPa)?
DECISION
YES - Replace solenoid valve V11 or V5, on primary manifold, as applicable (WP 0035).
NO - Go to Step (10).
STEP
10.
Perform suspension control valve pressure test using HDC.
a.
Reset all HDC solenoid valves by selecting RESET VALVES button (Figure 6, Item 5) on HDC control
box.
0012-10
03/15/2011Rel(1.8)root(tswp)wpno(T00010)
