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17
BLEEDING HYDRAULIC SYSTEM
1. Use UP/DOWN toggle switch to lower the
opened platform to the ground.
2. Loosen, but do not disconnect, the cylinder
line fi tting from the pressure compensated
fl ow control valve (FIG. 17-1) on top of
both cylinders.
3. Set the UP/DOWN switch on the RH runner in
the UP position for approximately one second
and then release the switch. Wait ten seconds
and then switch to UP and release. Repeat
this step until there is no air bubbling from the
loosened line fi ttings.
5. Use UP/DOWN toggle switch to raise and
lower the platform to make sure the Liftgate
operates correctly.
4. Tighten cylinder line fi tting to pressure
compensated fl ow control valve (FIG. 17-1).
FIG. 17-1
NOTE: Perform this procedure at a place where Liftgate platform can be
lowered to lowest point of travel. Get a helper to operate Liftgate
control switch.
PRESSURE COMPENSATED
FLOW CONTROL VALVE
CYLINDER LINE FITTING
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