TM 5-2350-378-23&P
0009
TROUBLESHOOTING PROCEDURES - BUMP STOPS INOPERATIVE - Continued
STEP
3.
Perform bump stop circuit test using the Hydraulic Diagnostic Center (HDC).
a.
Stop engine; relieve hydraulic pressure.
b.
Reset all HDC solenoid valves by selecting the RESET VALVES button (Figure 3, Item 5) on the HDC
control box.
c.
Have assistant start engine and place vehicle in SPRUNG mode.
d.
For left side bump stop circuit, close left forward manifold valve, by using LINE UP or LINE DOWN button
(Figure 3, Item 3), select V9 on HDC display (Figure 3, Item 2).
e.
Close V9 on the HDC display (Figure 3, Item 2), by selecting the CHANGE POSITION button
(Figure 3, Item 4) on HDC control box.
f.
Read transducer T-9 hydraulic pressure on HDC display (Figure 3, Item 1).
g.
For right side bump stop circuit, close right forward manifold valve, by using LINE UP or LINE DOWN
button (Figure 3, Item 3), select V10 on HDC display (Figure 3, Item 2).
h.
Close V10 on HDC display (Figure 3, Item 2), by selecting CHANGE POSITION button
(Figure 3, Item 4) on HDC control box.
i.
Read transducer T-8 hydraulic pressure on HDC display (Figure 3, Item 1).
CONDITION/INDICATION
Is transducer T-8 (right side) or T-9 (left side) hydraulic pressure at line 9 less than 2,500 psi (17,238 kPa)?
DECISION
YES - Go to Step (4).
NO - Go to Step (5).
STEP
4.
Perform forward manifold pressure test using the HDC.
a.
Reset all HDC solenoid valves by selecting RESET VALVES button (Figure 3, Item 5) on the HDC control
box.
b.
Start engine.
c.
For left forward manifold pressure, close left forward manifold valve.
d.
Using LINE UP or LINE DOWN button (Figure 3, Item 3), select V9 on the HDC display
(Figure 3, Item 2).
e.
Close V9 on the HDC display (Figure 3, Item 2), by selecting the CHANGE POSITION button
(Figure 3, Item 4) on HDC control box.
f.
Read transducer T-7 hydraulic pressure on the HDC display (Figure 3, Item 1).
g.
For right forward manifold pressure, close right forward manifold valve.
h.
Using LINE UP or LINE DOWN button (Figure 3, Item 3), select V10 on the HDC display
(Figure 3, Item 2).
i.
Close V10 on HDC display (Figure 3, Item 2), by selecting CHANGE POSITION button
(Figure 3, Item 4) on the HDC control box.
j.
Read transducer T-7 hydraulic pressure on the HDC display (Figure 3, Item 1).
0009-4
03/15/2011Rel(1.8)root(tswp)wpno(T00007)
