12
THE OILGEAR COMPANY
Bulletin 947023
1. Disconnect case drain line from port
1
or
1A
.
2. Drain pump case through the remaining (port
1
or
1A
) on the bottom of case. If plugs are
inaccessible, it may be necessary to remove
the pump from the mounting and drive motor
before draining it.
3. After removing the pump from the mounting
and before disassembly, cap or plug all ports
and clean the outside of unit thoroughly to
prevent dust from entering the system. See
Figures 8
and
9
.
Depending on what part or parts are to be
inspected, it may not be necessary to
completely take apart all assemblies.
CONTROL GROUP
Refer to the reference material for the information
which applies to the control your pump is equipped
with. Some force is required to remove the control
housing.
1. Remove socket head cap screws.
2. Lift the control group assembly, with control pin,
straight up from the top of the pump assembly.
The control pin may or may not remain in the
swashblock
(201)
.
3.
Remove control O-rings from the pump
housing.
VALVE PLATE GROUP
If another pump is coupled to thru-shaft pumps, it
will be necessary to remove coupling half before
removing valve plate.
1. Block the pump on a bench with the drive shaft
facing down.
2. Remove the valve plate
(401)
by removing four
cap screws
(403)
and lifting it straight up.
3. Remove valve plate O-ring
(404)
and
(411)
.
NOTE
