TM 5-2350-378-23&P
0009
TROUBLESHOOTING PROCEDURES - BUMP STOPS INOPERATIVE - Continued
STEP
7.
Perform forward manifold pressure test using HDC.
a.
Reset all HDC solenoid valves by selecting the RESET VALVES button (Figure 5, Item 5) on HDC control
box.
b.
Have assistant start engine and move SPRUNG/UNSPRUNG lever to UNSPRUNG.
c.
For left forward manifold pressure: Using LINE UP or LINE DOWN button (Figure 5, Item 3), select V9
on HDC display (Figure 5, Item 2).
d.
Close V9 on HDC display (Figure 5, Item 2), by selecting the CHANGE POSITION button
(Figure 5, Item 4) on HDC control box.
e.
Read transducer T-10 hydraulic pressure on HDC display (Figure 5, Item 1).
f.
For right forward manifold pressure; Using LINE UP or LINE DOWN button (Figure 5, Item 3), select V10
on HDC display (Figure 5, Item 2).
g.
Close V10 on HDC display (Figure 5, Item 2), by selecting CHANGE POSITION button
(Figure 5, Item 4) on HDC control box.
h.
Read transducer T-11 hydraulic pressure on HDC display (Figure 5, Item 1).
i.
Reset all HDC solenoid valves by selecting RESET VALVES button (Figure 5, Item 5) on HDC control
box.
1
2
3
4
5
T00709HDC
Figure 5. Hydraulic Diagnostic Center (HDC) Control Box.
j.
Stop engine and relieve hydraulic pressure.