TM 5-2350-378-23&P
0017
REAR OF VEHICLE RAISES IN SPRUNG, BUT NOT UNSPRUNG MODE - Continued
STEP
7.
Perform actuator port 11 pressure test using Hydraulic Diagnostic Center (HDC).
a.
Reset all HDC solenoid valves by selecting RESET VALVES button (Figure 3, Item 5) on HDC control
box.
b.
Using LINE UP or LINE DOWN button (Figure 3, Item 3) on HDC control box, select V8 on HDC display
(Figure 3, Item 2).
c.
Using CHANGE POSITION button (Figure 3, Item 4), close V8 on HDC display (Figure 3, Item 2).
d.
Have assistant start engine and move SPRUNG/UNSPRUNG lever to UNSPRUNG.
e.
Observe transducer T-12 hydraulic pressure on HDC display (Figure 3, Item 1).
f.
Using LINE UP or LINE DOWN button (Figure 3, Item 3) on HDC control box, select V8 on HDC display
(Figure 3, Item 2).
g.
Using CHANGE POSITION button (Figure 3, Item 4), open V8 on HDC display (Figure 3, Item 2).
2
1
3
4
5
T01505HDC
Figure 3. Hydraulic Diagnostic Center (HDC) Control Box.
h.
Stop engine; relieve hydraulic pressure.
CONDITION/INDICATION
Is transducer T-12 hydraulic pressure greater than 2,500 psi (17,238 kPa)?
DECISION
YES - Go to Step (11).
NO - Go to Step (8).