TM 5-2350-378-23&P
0012
FRONT CORNER (LEFT OR RIGHT) RAISES IN SPRUNG, BUT NOT UNSPRUNG MODE - Continued
CONDITION/INDICATION
Is linkage correctly adjusted?
DECISION
YES - Go to Step (5).
NO - Repair or replace SPRUNG/UNSPRUNG control valve linkage (TM 5-2350-262-20).
STEP
5.
Perform SPRUNG/UNSPRUNG control valve pressure test using HDC.
a.
Reset all HDC solenoid valves by selecting RESET VALVES button (Figure 4, Item 5) on HDC control
box.
b.
Start engine and have assistant move SPRUNG/UNSPRUNG lever between SPRUNG and UNSPRUNG
mode several times.
c.
Read transducer T-12 hydraulic pressure on HDC display (Figure 4, Item 1).
d.
Hydraulic pressure should be less than 145 psi (1,000 kPa) in SPRUNG mode and greater than 2,500
psi (17,238 kPa) in UNSPRUNG mode.
e.
Stop engine; relieve hydraulic pressure.
CONDITION/INDICATION
Is transducer T-12 pressure between 145 psi (1,000 kPa) AND 2,500 psi (17,238 kPa)?
DECISION
YES - Go to Step (15).
NO - Replace SPRUNG/UNSPRUNG control valve assembly (TM 5-2350-262-20).
STEP
6.
Perform main relief valve pressure test using HDC.
a.
Reset all HDC solenoid valves by selecting RESET VALVES button (Figure 4, Item 5) on HDC control
box.
b.
Using LINE UP or LINE DOWN button (Figure 4, Item 3), select V1 on HDC display (Figure 4, Item 2).
c.
Close V1 on HDC display (Figure 4, Item 2) by selecting CHANGE POSITION button (Figure 4, Item 4)
on HDC control box.
d.
Have assistant start engine and move ejector forward.
e.
Move SPRUNG/UNSPRUNG lever to SPRUNG and move EJECTOR CONTROL lever to BACK.
f.
Read transducer T-3 hydraulic pressure on HDC display (Figure 4, Item 1).
g.
While simultaneously holding EJECTOR CONTROL lever in BACK, have assistant move right-hand
SUSPENSION CONTROL lever to RAISE.
h.
Read transducer T-3 hydraulic pressure on HDC display (Figure 4, Item 1).
i.
Using LINE UP or LINE DOWN button (Figure 4, Item 3), select V1 on HDC display (Figure 4, Item 2).
j.
Open V1 on HDC display (Figure 4, Item 2) by selecting CHANGE POSITION button (Figure 4, Item 4)
on HDC control box.
0012-6
03/15/2011Rel(1.8)root(tswp)wpno(T00010)
