TM 5-2350-378-23&P
0017
REAR OF VEHICLE RAISES IN SPRUNG, BUT NOT UNSPRUNG MODE - Continued
STEP
1.
Perform port 8 check valve flow test.
NOTE
Have suitable container ready to catch oil.
a.
Stop engine; relieve hydraulic pressure.
b.
Disconnect LH 4 SPNSN UNIT-8 hose (Figure 1, Item 5) from check valve (Figure 1, Item 3) at port 8
(Figure 1, Item 1) on No. 4 left actuator (Figure 1, Item 2).
c.
Plug end of LH 4 SPNSN UNIT-8 hose (Figure 1, Item 5).
d.
Connect drain hose to check valve (Figure 1, Item 3).
e.
While holding end of drain hose in container, have assistant start engine and move SPRUNG/
UNSPRUNG lever to SPRUNG mode.
f.
Observe for steady flow of oil from drain hose.
g.
Vehicle should raise.
h.
Stop engine; relieve hydraulic pressure and connect line.
CONDITION/INDICATION
Does hydraulic oil flow freely through check valve?
DECISION
YES - Go to Step (6).
NO - Go to Step (2).
STEP
2.
Perform check valve inspection.
a.
Inspect check valve (Figure 1, Item 3).
b.
Ensure arrow (Figure 1, Item 4) points away from actuator (Figure 1, Item 2).
c.
Connect LH 4 SPNSN UNIT-8 hose (Figure 1, Item 5) to check valve (Figure 1, Item 3) at port 8
(Figure 1, Item 1).
0017-2
03/15/2011Rel(1.8)root(tswp)wpno(T00015)
