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Checking the Pulley
Alignment
Important:
Ensure that the belt is properly
tensioned prior to checking the alignment.
1.
Lay a straightedge along the outer face of the
drive pulley
(Figure
Important:
Only lay the straightedge across
the drive pulley, do not lay it across the drive
and the driven pulley.
2.
Ensure that the outer faces of the drive pulley
and the driven pulley are in line within 0.76 mm
(0.030 inch).
Important:
Do not use the idler pulley to
check the alignment.
3.
If the pulleys are not aligned, refer to
the Pulley Alignment (page
Important:
The belt may fail prematurely if
the pulleys are not properly aligned.
Figure 23
1. Alignment tool
Adjusting the Pulley
Alignment
1.
The driven pulley (at the roller-brush shaft) can
move in or out
(Figure
Note:
Make note of which way the pulley needs
to move.
23).
Adjusting
10).
24).
1. Drive pulley
2. Idler pulley
2.
While rotating the reel, which rotates the drive
pulley, pry the belt off the drive pulley
Important:
heavy rag to rotate the reel.
3.
Remove the locknut securing the driven pulley
to the brush shaft
Note:
Use a 1/2-inch wrench on the roller-brush
shaft flats to keep it from rotating.
4.
Remove the driven pulley from the shaft
25).
5.
If the pulley needs to move out, add a 0.8 mm
(0.032 inch) thick washer
Important:
remove the existing 0.8 mm (0.032 inch) thick
washer.
6.
Install the pulley as shown in
g038703
1. Locknut
2. Driven pulley
3. Washer—0.8 mm (0.032
inch) thick
10
Figure 24
3. Driven-pulley nut
Wear a padded glove or use a
(Figure 24
or
Figure
(Figure
25).
If the pulley needs to move in,
Figure
Figure 25
4. Spacer
5. Brush shaft flats
g038704
(Figure 24
25).
(Figure
25.
g033211
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