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3. Press bearing (5) into each end of shaft with an
approved pusher device. Apply pressure only to
the inner race until bearings are flush against
shoulders of the shaft.
4. Pack bearing cavity in both end bells with
recommended grease. Slide one field assembly
(6) over bearing and slide entire shaft assembly
into housing.
5. Slide second field assembly (6) over bearing
and position both field assemblies against
housing (4).
6. Align holes of both field assemblies (3) with
holes in housing (4) and secure with cap
screws and lockwashers (2). Rotate shaft to
ensure that no binding exists.
7. Replace key(s) (1), connect brake leads in
junction boxes and replace covers. Brake is
ready for return to operation.
AB-707
Disassembly
1. Remove unit from operation and pull off shaft
coupling hubs, or sheave, with approved
bearing puller, and remove shaft key(s)(1).
2. Remove junction box cover
(2) by
removing two
machine screws and lockwashers (3).
Disconnect brake leads inside of junction box.
3. Remove four cap screws and lockwashers (4)
from each end bell.
4. Slide end bell (5) - Field Side - off of bearing
and shaft assembly. Remove entire shaft
assembly out of housing (6) from the other end.
Separate second end bell (5) from shaft.
5. Using an approved bearing puller, remove
bearing (7) from each end of shaft (8). Force
should be applied only to the inner race when
removing bearings.
6. To remove field assembly from housing, match
mark and remove the pins that hold it in place.
7. If necessary, remove snap ring (9), fan (10) and
key (11); heat hub of fan if necessary.
8. Clean all pieces of grease and dirt before
reassembly.
Reassembly
1. If fan (10) was removed, install key (11) into
shaft; heat hub of fan and press it over the key
onto the shaft flush against shoulder of the
shaft. Install snap ring (9).
2. Install field assembly into housing and secure
with pins.
3. Press bearing (7) onto each end of shaft with
an approved pusher device. Apply pressure
only to the inner race until bearings are flush
against shoulders of the shaft.
4. Pack bearing cavity in both end bells with
recommended grease. Slide end bell (5) - Fan
Side - over bearing. Slide entire shaft assembly
into housing (6).
5. Slide second end bell (5) over bearing and
position both end bells against housing.
6. Align holes in each end bell with holes in
housing and install four cap screws and
lockwashers (4). Rotate shaft to ensure that no
binding exists.
7. Replace key(s)(1), connect brake leads in
junction box and replace cover (2). Brake is
ready for return to operation.
