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Bulletin 948034A
13
Bulletin 948034A
PUMP SERVICE MANUAL
DISASSEMBLY (Continued)
Disconnect case drain line from port
1
or
1A
.
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.
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 12
and
1
.
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.
Remove socket head cap screws.
Lift the control group assembly, with control pin,
(721)
straight up from the top of the pump
assembly. The control pin may or may not
remain in the swashblock
(201)
.
Remove control O-rings
(1228) (1015)
from the pump housing.
VALVE PLATE GROUP
If another pump is coupled to thru-shaft pumps, it
will be necessary to remove coupling
(501)
before removing valve plate.
Figures 14
15
1. Block the pump on a bench with the drive shaft
facing down.
2. Remove the valve plate
(401)
by removing four
socket head cap screws
(403)
and lifting it
straight up.
3. Remove valve plate O-ring
(1013)
and
(1261)
.
NOTE
