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Blower Assembly
1. Remove the existing 5/16-18 x 5/8" flange head
bolts (B, Figure 7) from the blower housing (A).
2. Install the blower mount plate (C) onto the blower
housing and reinstall the 5/16-18 x 5/8" flange
head bolts. Tighten securely.
3. Install three (3) 3/8-16 x 1" bolts and nylon lock
nuts (D) through the blower mount plate and
blower. The bolt heads must be installed on the
inside of the blower housing.
4. Loop the idler spring (A, Figure 8) through the 1/4"
x 2" eyebolt (B). Install the eyebolt through the
L-bracket on the blower mount and install the 1/4-
20 nylock flange nut (C). Tighten the nut until the
eyebolt contacts the L-bracket.
5. Remove the blower belt guard and set aside.
6. Install the impeller drive pulley (A, Figure 9) onto
the impeller shaft (B) as described in Figure 9.
Install the 1/4" x 1-1/2" long key (not shown) in the
pulley.
7. Align the pulley groove with the appropriate slot
as described in Figure 9. Tighten the set screws
in the pulley.
8. Reposition the 3/8-16 x 6" bolt if required to line
up with the pulley groove.
9. Check the position of the idler pulley (A, Figure
10). The position must be aligned with the
position of the pulley (outer row of holes for pulley
hub pointing in, inner row of holes for pulley hub
pointing out). Reposition if necessary.
Inner Slot
Figure 9. Install Impeller Drive Pulley
Hub pointing OUT:
Outer Slot
Align pulley groove
with slot (outer slot
with pulley hub in
OR inner slot with
pulley hub out)
A
B
Figure 7. Install Blower Mount Plate
A. Blower Housing
B. 5/16-18 x 5/8" Bolts (existing)
C. Blower Mount Plate
D. 3/8-16 x 1" Bolts & Nylon Lock Nuts (3X)
Figure 8. Install Idler Spring
A. Idler Spring
B. 1/4" x 2" Eyebolt
C. 1/4-20 Nylock Flange Nut
Outer Row
A
Figure 10. Check Idler Pulley Position
A. Idler Pulley
INSTALLATION
B
C
D
C
B
A
Inner Row
11
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