Pellerin Milnor Corporation 59
Figure 18. Cross Section View of Front and Rear Bearing Assemblies (Bearing Assembly for 60"
and 72" WED Shown. Others similar.)
Front Bearing Assembly
Rear Bearing Assembly
Legend
A...Cap bolt
B...Bearing housing
(bearing and seal
carrier)
C...Bearing cover
D...Bearing lock nut
E...Bearing lock
washer
F...Front bearing
(floating)
G...Bearing and seal
cavity leak offs
H...Shell front
J...Seal sleeves
K...Shaft
L...Seals
M...Shaft seal leak off
cavities
N...Shaft seal holder
P...Rear bearing
(fixed)
Q...Shell rear
Access to the bearings and seals for lubrication is provided by the various grease passages. Ex-
cess lubricant is excreted through the bearing and seal cavity leak offs as shown on Figure 18 .
The bearings and seals must be lubricated regularly and the leak off cavities flushed out periodi-
cally through the plugged cleanout connections, in strict accordance with the preventive mainte-
nance procedures elsewhere.
If bearing replacement becomes necessary due to wear, it is essential that the bearings and seals
are replaced. Seal replacement requires removal of the bearing housing and seal sleeve. (In rare
instances where the seals are known to be in good condition, it is not necessary to remove the
bearing housing, seals or seal sleeve when a bearing is replaced.) A pulling fixture is required
to remove the bearing housing. A set of guide rods, a seal sleeve setting fixture and a bear-
ing setting fixture are required for reinstallation of the housing. These tools are available for
rental or purchase from the Milnor
®
factory and are pictured elsewhere in this section. Contact
the factory two weeks in advance of repairs, when ordering these tools.
This maintenance is performed in the following order:
1. Remove old bearing(s). When removing both bearings, remove the front (soil side) bearing
first.
2. Remove bearing housings, seal sleeves, and seals.
3. If both bearings were removed, install the bearing housing, seal sleeve, seals, and new bearing
on the rear (clean side).
4. Install the bearing housing, seal sleeve, seals, and new bearing on the front (soil side).
Bearing Assemblies
To Next Page
Loading...
Need help?
General
