8
between the Seal on the Shaft and the support
fixture. Using an arbor press, press the Shaft
through the bearing, seal spacer, and seal (See
Figures 17 and 18).
5. Inspect the sealing area of the Shaft and other Shaft
Assembly components for signs of wear and replace
them if necessary.
Shaft Seal Installation
Special attention should be exercised when working
with retaining rings. Always wear safety goggles
when working with spring or tension loaded
fasteners or devices.
1. Install the Large Retaining Ring; then, slide the
Thrust Bearing and Races, and Seal Spacer onto the
Shaft (See Figure 19).
2. The sealing lips on the new Seal must be expanded
to fit on the Shaft. Press the Seal onto the large end
of the Shaft with the Seal Lip facing out. Do not
push the Seal past the keyway on the Shaft (See
Figure 20).
3. Once the Seal Lip has been expanded, remove the
Seal from the Shaft.
4. With the Seal Lip facing the large end of the Shaft,
slide the Seal over the smaller end of the Shaft, and
gently push it onto the large end of the Shaft until it
is seated against the Seal Spacer (See Figures
19 & 20).
Shaft Bearing Installation
Figure 18
Shaft
Ball Bearing
Seal Spacer
Seal
Shaft
Figure 20
Shaft
Shaft
Seal
Seal
Figure 19
Shaft
Large
Retaining
Ring
Thrust Bearing
and Races
Seal
Spacer
1. Install the Spacer Ring and Ball Bearing onto the
Shaft (See Figure 21).
2. Insert the Shaft into the support fixture. Place the
two support bars opposite each other and between
the Bearing and the fixture. Place them on an arbor
press and carefully press the Shaft down allowing
just enough room for the Retaining Ring next to the
Bearing to be installed (See Figure 22).
Make sure the spacer ring between the seal and the
bearing is free floating (not binding).
If the Main Needle Bearings in the Hydraulic Motor
require replacement, a new body an/or end plate,
with the main needle bearing already installed must
be used. If this occurs, check other internal parts of
the motor for damage or wear.
Figure 21
Figure 22
Spacer Ring
Shaft
Ball Bearing
