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3
Figure 14
1. Motor coupler
2. Fan coupler
3. Tighten the capscrews and the nuts securing the
mounting brackets together and to the blower housing.
4. Remove the alignment tool and finish assembly.
Torquing Fasteners
If the blower is ever disassembled, the following fasteners
must be torqued as specified. Also, apply Loctite 242 to the
threads before installing.
•
The set screws securing the motor and fan shaft couplers
(Figure 14) must be torqued to 58 to 82 in-lb.
•
The fan shaft bearing set screws (Figure 15) must be
torqued to 58 to 82 in-lb.
G003816
Figure 15
1. Set screw
•
The fan mounting nut (Figure 16) must be torqued to
500 ft-lb.
4
G003815
1
3. Set screw (2 each)
4. Coupler spider
1
2
1
1. Fan mounting nut
Servicing the Castor Arm
Bushings
The castor arms have bushings pressed into the top and
bottom of the tube and after many hours of operation, the
bushings will wear. To check the bushings, move the castor
fork back and forth and from side to side. If the castor
spindle is loose inside the bushings, the bushings are worn
and must be replaced.
1. Raise the debris blower so that the wheels are off of the
floor. Block the blower so that it cannot accidentally
fall.
2. Remove the tensioning cap, spacer, and thrust washer
from the top of the castor spindle.
3. Pull the castor spindle out of the mounting tube. Allow
the thrust washer and spacer to remain on the bottom
of the spindle.
4. Insert a pin punch into the top or bottom of the
mounting tube and drive the bushing out of the tube
(Figure 17). Also, drive the other bushing out of the
tube. Clean the inside of the tubes to remove dirt.
14
G003817
Figure 16
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