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Maintenance
Radial Seal Installation
Lower Bearing Carrier
O-ring and Bearing
Replacement
Figure 21 - Lower Bearing Carrier
NOTE: The bearing will be damaged during
removal and must be replaced with a new
bearing.
Page 20
1.
Lubricate the o-ring seal and expand it over the stem groove.
2.
Place the assembly tool over the stem and extrude the o-ring seal into the
groove by evenly tightening the cap screws on the installation tool.
3.
Remove the tool. The dovetail groove permanently retains the o-ring seal.
Figure 20 - Radial Seal Installation
1.
Remove and replace the o-ring (Figure 21, item A) located inside the lower
bearing carrier.
2.
Check the split bearing (Figure 21, item B) inside the lower bearing carrier
by feeling the amount protruding from the lower bearing carrier wall. If the
bearing is flat against the wall, replace the bearing.
3.
Place a screw driver behind the bearing and pry it away from the wall of the
lower bearing carrier. A needle-nose pliers can be used to grip the bearing
for removal.
4.
To install a new bearing, coil the bearing to a size smaller than the inside
diameter of the adapter and insert it into the proper location.
5.
Push the actuator stem into the lower bearing carrier to help properly seat the
bearing.
6.
Using your finger, ensure that the bearing is properly seated. Visually
inspect the seating.
7.
To remove the outer o-ring (Figure 21, item C), slide or cut the o-ring off the
lower bearing carrier. Do not nick or scratch the o-ring groove.
8.
Lubricate a new o-ring with an approved lubricant and install it.
95-03076
Waukesha Cherry-Burrell
August 2008
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