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FAN
GUARD
FAN
SWITCH ARM
HYDRAULIC.
FLUID
RETURN
FILTER
ELECTRIC
MOTOR
MOUNTING
BOLTS
HYDRAULIC
FLUID INLET
STRAINER
Fig
5,
Clean sump of sediment and reassemble unit using a
through fill hole strainer.
new sump gasket. Pour hydraulic fluid back into sump
Replacing Hydraulic
Pump
Unplug unit, follow the Pressure Relief Procedure on
page 5, take shield off and disassemble unit as explain-
ed above.
against pump. See Fig 6. Take out the four mounting
Loosen the setscrew in coupling half and push coupling
bolts and washers and remove pump. Discard the O-ring
seals.
sprocket off adjusting nut.
Remove the adjusting sprocket retaining nut and pull
Apply a light grease to the O-rings and put them in place
on pump mounting. Put the coupling half on shaft of
new pump and leave it loose. See Fig 6.
disturb O-ring seals and screw the mounting bolts in
Put pump into place on mounting carefully so you don't
tightly. Push coupling half into other halfuntil there is a
0 . 3 1
in.
(0.8
mm) clearance between them, then tighten
sprocket, onto adjusting nut, then screw retaining nut
setscrew firmly. See Fig 5. Put the adjusting chain onto
onto stud and tighten, until snug, then back off
1/12
to
118
turn.
COUPLER HALF
O-RING
hydraulic fluid into sump. Check fluid level and add fluid
Clean sump of sediment, reassemble unit and pour
as needed.
When ordering a replacement hydraulic pump, be very
careful to order by the correct part number. To be sure,
check the number stamped on the pump.
Electric Motor Wiring Diagram
NOTE:
These unit are wired for 115 volt service.
They can be rewired for
230
volt service.
For
1 1 W
SERVICE
FROM
MOTOR
GRAY
SERVICE
For POV
GREEN
307-337
7
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