7
BLOWER ASSEMBLY
1. Remove the existing 5/16-18 x 5/8” flange head
bolts (B, Figure 3) 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 4) 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
eye of the eyebolt contacts the L-bracket.
5. Remove the blower belt guard and set aside.
6. Install the impeller drive pulley (A, Figure 2) onto
the impeller shaft (B) as described in Figure 4.
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 2. Tighten the set screws
in the pulley.
8. Reposition the 3/8-16 x 6” bolt (C) if required to
line up with the pulley groove.
9. Check the position of the idler pulley (A, Figure
5). 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.
Figure 3. 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)
B
D
C
B
A
C
A
B
Figure 4. Install Idler Spring
A. Idler Spring
B. 1/4” x 2” Eyebolt
C. 1/4-20 Nylock Flange Nut
Installation
Inner Slot
Align pulley groove
with slot (outer slot
with pulley hub in
OR inner slot with
pulley hub out)
Figure 2. Install Impeller Drive Pulley
B
A
Outer Slot
Figure 5. Check Idler Pulley Position
A. Idler Pulley
Inner Row
Outer Row
A
Hub pointing IN:
48” Models
Hub pointing OUT:
52” Models
61” Models
C
Not
for
Reproduction
