Procedure For External Bearing Replacement - Trane CDQ Installation & Maintenance Manual

Procedure for
External Bearing
Replacement
Prepare wheel for removal of old
bearing and installation of new
bearing.
1 Remove belt from motor and
wheel.
2 Support wheel with wooden
blocks on both sides of the
wheel (see Figure 13).
Figure 13. Wooden blocks support
wheel.
3 Remove cover plate from
bearing housing if present (see
Figure 14).
Figure 14. Remove cover plate.
14
Service and Repair
4 Remove the bolt and washer
from the end of the shaft (see
Figure 15).
Figure 15. Remove bolt and washer
from shaft.
5 Loosen the set screws in the
bearing inner race (see
Figure 16).
Figure 16. Loosen set screws.
6 Remove the bolts securing the
bearing to the cassette (see
Figure 17).
Figure 17. Remove bolts securing
bearing.
7 Remove the bearing. Use a
bearing puller if necessary.
8 Clean shaft and install new
bearing on shaft, insuring that
set screws line up with flats on
the shaft.
9 Install bearing mounting bolts
(see Figure 18). It may be
necessary to move wheel up or
down to align bolts. The easiest
method is to apply pressure at
the top of the wheel. Using a 1-
foot by 1-foot square of ½-inch
thick plywood on the face will
spread the force enough to
prevent damage to the media
face while pushing on the top of
the wheel. The other method of
lifting the wheel is to use a pry
bar at the bottom, taking care to
only apply force at a spoke to
prevent bending the band.
Figure 18. Install bearing mounting
bolts.
10 Tighten the bearing mounting
bolts.
11 Check alignment of the set
screws and tighten to the
specifications provided in the
literature with the bearing.
CDQ-SVX01A-EN