TM 5-2350-378-23&P
0025
e.
Have the vehicle operator release the left SUSPENSION CONTROL lever.
7.
Valve V21 and transducer T3 check:
a.
Push the RESET VALVES button on the HDC Control Box, and verify all the valves are set to the power
OFF setting and are in the default position as shown in Table 1.
b.
Slowly close ball valve V21 until the pressure reading on T3 display exceeds 3,000 psi (20684.27 kPa).
(This indicates that V21 and T3 are both working properly.)
c.
Open ball valve V21 completely.
8.
Valve V22 and transducer T4 check:
a.
Push the RESET VALVES button on the HDC Control Box, and verify all the valves are set to the power
OFF setting and are in the default position as shown in Table 1.
b.
Slowly close ball valve V22 until the pressure reading on T4 display exceeds 3,000 psi (20684.27 kPa).
(This indicates that V22 and T4 are both working properly).
c.
Open ball valve V22 completely.
9.
Valve V5 and transducer T1 check:
a.
Push the RESET VALVES button on the HDC Control Box, and verify all the valves are set to the power
OFF setting and are in the default position as shown in Table 1.
b.
Have the vehicle operator place the vehicle in UNSPRUNG mode.
c.
Use the LINE UP and LINE DOWN buttons to select valve V5. Press CHANGE POSITION to close
valve V5.
d.
Have the vehicle operator move the right SUSPENSION CONTROL lever to LOWER. Verify that the right
suspension does NOT lower, and that transducer T1 reads greater than 3500 psi (24131.65 kPa). (This
indicates that valve V5 has redirected flow from the suspension to transducer T1, which will now read
the value of the system relief valves.)
10.
Valve V9 and V10 check:
a.
Push the RESET VALVES button on the HDC Control Box, and verify all the valves are set to the power
OFF setting and are in the default position as shown in Table 1.
b.
Have the vehicle operator place the vehicle in SPRUNG mode.
c.
Verify that the bump stops are extended.
d.
Use the LINE UP and LINE DOWN buttons to select valve V9. Press CHANGE POSITION to close
valve V9.
e.
Use the LINE UP and LINE DOWN buttons to select valve V10. Press CHANGE POSITION to close
valve V10.
f.
Have the vehicle operator place the vehicle in UNSPRUNG mode.
g.
Verify that the bump stops are still extended. (This indicates that V9 and V10 are closed, preventing
operation of the bump stops.)
h.
Push the RESET VALVES button on the HDC Control Box, and verify all the valves are set to the power
OFF setting and are in the default position as shown in Table 1.
i.
Verify that the bump stops are now retracted. (This verifies that V9 and V10 have opened.)
11.
Valve V11 check:
a.
Push the RESET VALVES button on the HDC Control Box, and verify all the valves are set to the power
OFF setting and are in the default position as shown in Table 1.
b.
Have the vehicle operator place the vehicle in SPRUNG mode.
0025-7
03/15/2011Rel(1.8)root(maintwp)wpno(M10001)
