SPOOL AND POPPET VALVE CHECKS
The track adjuster cylinders must be extended (after reaching
desired height) to tighten the track. To retract track adjuster
cylinders, the poppet valves must be overriden. To override
poppet valve (X1 0r X2), depress manual override, rotate 180o
counter clockwise and release (it will be up).
To test spool valve, retract and extend track adjuster cylinders.
Have assistant start engine.
To retract left cylinder, override poppet valve X2 (3) and lift manual override spool valve
To retract right cylinder, override poppet valve X1 (4) and lift manual override spool valve
To extend left cylinder, depress manual override spool valve Z4 (1).
To extend right cylinder, depress manual override spool valve Z1 (2).
Stop engine; relieve hydraulic pressure.
OIL FLOW TEST
Have suitable container ready to catch oil.
Disconnect HYDR-MAN-IN-9 hose (5) from elbow (6) at port P on track adjuster manifold
(7). Cap elbow (6).
While holding open end of hose (5) in suitable container, have assistant start engine.
Check for free flow of hydraulic oil from hose (5).
Stop engine; relieve hydraulic pressure. Connect hose (5) to elbow (6).
Perform semi-automatic track adjuster electrical troubleshooting. Refer to TM 5-2350-262-20-1.