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WALKER MANUFACTURING COMPANY
July 2006
SERVICE INSTRUCTIONS
Remove Chain Guard
and Loosen Chain Tension
3. Turn the brush drive shaft until the master link for
the chain is accessible.
4. Remove the master link from the chain and remove
the chain from the sprocket.
5. Place the new chain on the sprockets and install
the master link. Be sure to install the clip on the
master link properly. The closed end of the clip
should point in the direction of chain travel.
Replace Drive Chain
6. Adjust the chain. Refer to ADJUSTMENTS of Ro-
tary Broom Drive Chain Tension in this section.
7. Reinstall the chain guard by reversing the removal
procedures.
Rotary Broom Drive Sprocket
A sprocket should be replaced when the teeth be-
come asymmetric (when the front side of a tooth is a
different shape than the back side of the tooth).
Sprocket Wear
NOTE: Generally; a small sprocket wears faster
than a large sprocket.
1. Remove the chain guard and drive chain. Refer to
REPLACING/REPAIRING of Rotary Broom
Drive Chain in this section.
2. Loosen the set screws that fasten the sprocket to
the drive shaft.
3. Slide the sprocket off the drive shaft. Use a puller
if necessary.
4. If necessary, clean off the end of the drive shaft
with an emery cloth or a wire brush.
5. Slide the sprocket onto the drive shaft and align the
slot in the new sprocket with the square keyway on
the drive shaft.
6. Place the key in the keyway on the drive shaft.
Bearing
Flange Bolts
Chain Guard
Tension
Block
Master Link
Plate
Open End
of Clip
Closed End
of Clip
Master Link
Symmetric (Acceptable)
Asymmetric (Replace)
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