figure 5.3a
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Service Section
5.3 Replacing the Drive Bearings (if equipped), continued;
Review the safety section of this manual before attempt-
ing these procedures.
Once the shaft is in place, lock down the bear-
ings:
Starting with the rear bearing (closest to the
blower housing) install the rear collar on the
blower housing side (figure 5.3b). The rubber
seal should be facing the bearing.
Push the steel collar up to the bearing and make
sure the groove in the collar goes inside the
groove in the bearing.
Tighten the set screw (figure 5.3e).
Install the front locking collar sliding the locking
collar up to the bearing and the turn the collar
clockwise until is slips over the inner ring exten-
stion and engages the eccentric. Turn by hand
until the parts are locked together.
Place a punch or drift in the blind hole in the collar
and strike it sharply to the lock the collar and ring
tightly together (figure 5.3f)
Tighten the set screws with an Allen wrench until
the set screw stops. (figure 5.3g)
Do steps 11-14 for the other bearing also.
Line up the pulleys and tighten the busing.
Re-install the belt guards and impeller as de-
scribed earlier.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
Installing the Drive Bearings, continued:
figure 5.3b
Collar (Item# 8)
Bearing Plate
Set Screw
figure 5.3e
figure 5.3f
figure 5.3g