Walker IMPLEMENT HITCH SB6670 - Manual (Page 57)

Maintenance Instructions
REPLACING/REPAIRING
57
6. Loosen the two sprocket set screws and push
sprocket towards the brush.
Loosen Chain Idler and Set Screws
7. Remove the three bolts on the bearing flanges
on each side of the broom and loosen the bear-
ing set screws. Push the bearings and flanges
towards the brush.
8. Remove the bearing, brush support adapter
and flanges on the opposite side of the sprock-
et. Remove the brush by carefully sliding it
downward from its position.
Remove Brush from Broom Housing
9. Install the new brush by reversing the removal
procedure.
Rotary Broom Gearbox
Remove and replace the gearbox as follows:
1. Stop the tractor engine, set the parking brake,
and remove the ignition key.
2. Loosen the set screw fastening the driveline fe-
male half and slide the driveline off the gearbox
shaft.
3. Remove the four (4) bolts, lock washers, and
hex nuts that fasten the gearbox to the broom
housing.
4. Loosen two (2) set screws on the chain drive
shaft and slide it from the gearbox drive shaft.
5. Replace the gearbox by reversing the removal
procedures.
Replace Rotary Broom Gearbox
Rotary Broom Drive Chain
The drive chain should be replaced if, when adjust-
ed properly, it can be pulled away from the front of
the drive sprocket more than 1/2 the height of a
tooth on the sprocket. Running the rotary broom
with a worn chain increases wear on the sprock-
ets.
1. Remove the chain guard. Refer to LUBRICA-
TION of Rotary Broom Drive Chain in this sec-
tion.
Chain Guard
Flange
Bolts
Bearing
Set
Screws
Sprocket
Screws
Sprocket Chain
Idler
Chain Idler
Bolt
Brush
Support
Adapter
Bearing
Flanges
Gearbox