Bulletin 947023
THE OILGEAR COMPANY
15
DRIVE SHAFT GROUP
Check:
•
the shaft seal
(007)
for deterioration or
cracks. Replace if necessary (press-out).
•
the shaft bearing
(306)
for galling, pitting,
binding or roughness.
•
the rear shaft bushing in valve plate.
•
the shaft and its splines for wear. Replace
any parts necessary.
ASSEMBLY
See
Figures 8
and
9
. Follow the disassembly
procedures in reverse for reassembling the pump.
During assembly, install new seals and O-rings.
Apply a thin film of CLEAN grease or hydraulic fluid
to sealing components to ease assembly. If a new
rotating group is used, lubricate thoroughly with
CLEAN hydraulic fluid. Apply fluid generously to all
wear surfaces.
SWASHBLOCK GROUP
If removed,
1. Press shaft seal
(007)
into front of pump
housing.
2. Place housing on a bench with the mounting
flange side down.
3. Grease the back side of each saddle bearing
(204)
and place on the pin to locate the
bearings in the pump case. Make sure the pins
do not protrude.
4. The swashblock is inserted from the valve plate
end. Insert swashblock
(201)
into the pump
housing. Once in place, be sure the swashblock
swivels in the saddle bearings. With new
bearings, swiveling may be stiff and not always
smooth.
5. Bearing
(202)
should fit into place with a little
difficulty and be square to the axis of the pump.
6.
Tap bearing into place if necessary using
extreme care not to damage the bearing.
7. Insert retaining ring
(208)
to hold bearing in
place. Assemble plug
(205)
with O-ring
(209)
into case.
DRIVE SHAFT GROUP
1. Place the housing on its side with the axis
horizontal.
2. Install the seal retainer
(302)
.
3. Lubricate the shaft seal
(007)
and shaft.
4.
Insert the drive shaft
(301)
and bearing
assembly into the housing.
5. Lock in place with the drive shaft bearing
retainer ring
(305)
.
ROTATING GROUP
See
Figure 6.
1. Place the cylinder barrel
(101)
, wear surface
down, on a clean cloth.
2. Place the shoe retainer spring
(105)
in the
center of the barrel with the fulcrum ball
(103)
on top of it.
3. Insert the identified pistons
(102)
into their
corresponding identified holes of the shoe
retainer
(104)
. As a unit, fit the pistons into their
corresponding, identified bores in the cylinder
barrel.
DO NOT FORCE.
When parts are
aligned properly, the pistons will fit smoothly.
