TM 5-2350-378-23&P
0019
WINCH AND RIGHT-HAND WHEEL CONTROL INOPERATIVE - Continued
STEP
1.
Perform main relief valve test to verify hydraulic pressure at 13L main relief valve using Hydraulic Diagnostic
Center (HDC).
WARNING
Before performing any hydraulic troubleshooting in the bowl, move ejector forward and
disable it by disconnecting ejector cylinder from hydraulic system. Failure to comply may
result in severe injury or death to personnel.
a.
Reset all HDC solenoid valves by selecting RESET VALVES button (Figure 2, Item 5) on HDC control
box.
b.
Move ejector forward, stop engine, and relieve hydraulic pressure.
c.
Disable ejector by manually closing ejector inhibit ball valve V23 (Figure 1, Item 1) on DCV bank.
1
T01703HDC
Figure 1. Directional Control Valve (DCV) Bank.
d.
Using LINE UP or LINE DOWN button (Figure 2, Item 3), select V1 on HDC display (Figure 2, Item 2).
e.
Close V1 on HDC display (Figure 2, Item 2) by selecting CHANGE POSITION button (Figure 2, Item 4)
on HDC control box.
f.
Have assistant start engine, move SPRUNG/UNSPRUNG lever to SPRUNG, and move EJECTOR
CONTROL lever to BACK.
g.
Read transducer T-4 hydraulic pressure on HDC display (Figure 2, Item 1).
h.
While simultaneously holding EJECTOR CONTROL lever in BACK, have assistant move left-hand
SUSPENSION CONTROL lever to RAISE.
i.
Read transducer T-4 hydraulic pressure on HDC display (Figure 2, Item 1).
