TM 5-3895-373-34
2.51
ADJUST UNLOADING AND RELIEF VALVES - Continued. --
B.
ADJUST - Continued.
3.
ADJUST TRACK TENSIONING UNLOADING
VALVE.
NOTE
Before adjusting track tensioning
unloading valve pressure while the
valve is in the machine, ensure stack
valve relief pressure is set to 2500 psi
(17 238 kPa) and track tensioning
relief valve pressure is set to 1800 psi
(12 411 kPa). Refer to steps 1.c and
2.d.
a.
Loosen hex nut (9). Turn adjustment screw
(10) counterclockwise all the way out.
b.
Turn
adjustment
screw
(10)
clockwise
to
increase valve setting.
c.
Set track tensioning unloading valve (11) to 900
psi (6206 kPa). If setting causes valve to stay
closed at pressures greater than 900 psi, repeat
steps a and b.
d.
Tighten hex nut (9). Ensure adjustment screw
(10) does not turn while tightening hex nut.
e.
Recheck pressure setting.
4.
ADJUST VIBRATION RELIEF VALVE.
a.
Remove cap nut (12) and flat washer (13).
b.
Loosen hex nut (14).
c.
Turn adjusting screw (15) clockwise to increase
relief pressure setting or counterclockwise to
decrease relief pressure setting.
d.
Set vibration relief valve (16) to 2000 psi (13
790 kPa).
e.
Tighten hex nut (14). Ensure adjusting screw
(15) does not turn while tightening hex nut.
f.
Recheck pressure setting.
g.
Install flat washer (13) and cap nut (12). Tighten
cap nut.
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