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 end of lift truck above the ground, as required.
2-15. Hydraulic Pump Motor
(4) Install blocking and remove lifting device.
Note. If hydraulic oil is to be reused, insure that hydraulic oil
(1) Disconnect
battery
and
discharge
is drained into a clean container.
capacitors (para 2-5).
(5) Remove drain plug from suction fitting in
(2} Remove toe and floor plates (TM 10-3930-620-12)
reservoir and allow hydraulic oil to drain into container.
(3) Tag and disconnect wiring to motor.
(6) Disconnect hose connections from
(4) Remove drain plug from hydraulic oil
hydraulic pump.
reservoir and allow hydraulic oil to drain into container.
(7) Plug hoses to prevent dirt or other foreign
Note. If hydraulic oil is to be reused, insure that hydraulic oil is
matter from entering hydraulic system.
drained into a clean container.
(8) Remove screws and lock washers
(5) Install wheel chocks forward and aft of
securing pump to motor housing.
rear wheels to prevent lift truck from moving.
(9) Pull pump shaft from armature shaft.
(6) Using a suitable lifting device, raise front
end of lift truck above the around, as required.
(7) Install blocking and remove lifting device.
(8) Tag and disconnect hose connections
from pump.
(9) Plug hoses to prevent dirt or other foreign
matter from entering hydraulic system.
(10) Position a floor jack under pump motor.
(11) Remove screws securing mounting
brackets to lift truck frame.
(12) Carefully lower pump motor and remove
from under lift truck.
Warning: Use an approved cleaning solvent.
Wear suitable eye protection when using
compressed air.
(13) Clean exterior of pump motor using an
approved solvent. Dry thoroughly using com- pressed
air.
(14) Remove screws and lock washers
securing pump to motor housing.
(1) Slide drive gear splines of pump into
splines in armature shaft of motor.
(2) Secure pump to motor housing using lock
washers and screws.
(3) Use floor jack to position motor under lift
truck.
Figure 2-9. Hydraulic pump and motor.
(4) Use screws to secure motor mounting
b. Installation.
brackets to lift truck frame. Remove floor jack.
(1) drive gear splines of pump into splines in
(5) Unplug and connect hoses to pump.
armature shaft of motor.
(6) Install lifting device and remove blocking.
(2) Secure pump to motor housing using lock
(7) Remove lifting device.
washers and screws.
(8) Fill reservoir (TM 10-3930-620-12).
(3) Remove plugs from ends of hydraulic lines
(9) Reconnect wiring.
and connect hydraulic lines to hydraulic pump.
(10) Install toe and floor plates (TM 10-3930-
(4) Install lifting device and remove blocking.
620-12).
(5) Remove lifting device.
(11) Connect battery connector. While sitting
(6) Fill reservoir (TM 10-3930-620-12).
on operator's seat, place key switch in ON position.
(7) Connect battery connector. While sitting
(12) Perform operational check of hydraulic
on operator's seat, place key switch in ON position.
system and insure that lifting and tilting operations are
(8) Perform operational check of hydraulic
smooth.
system and insure that lifting and tilting operations are
smooth.
2-11
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