Brush Replacement - Craftsman 486.24221 Owner's Manual

BRUSH REPLACEMENT WHEEL GEAR AND PAWL SERVICE
NOTE: Brush replacement should be done one brush at
a time=
Remove the hopper bag from the sweeper.
Loosen the hex bolts and lock nuts on two single
brush retainers which clamp one brush to the double
brush retainers. Do Not loosen or remove the bolts
which fasten the double brush retainers to the brush
shaft. See figure 28.
Slide the brush out of the retainers, noting on which
side of the brush the bristles overlap. See figure 28.
Install new brush, making sure the bristles overlap on
the same side of the brush as before. See figure 28.
BRUSH ROTATION
BRUSH
SHAFT
OVERLAP
BRmSTLES
SINGLE
,BRUSH
RETAINERS
FIGURE 28
BRUSH ROTATmON
IMPORTANT: Do not remove both wheels at the same
time to avoid mixing of parts. (The R.H. and LH. ratchet
sprockets are not interchangeable.) Make notes on the
position of washers and snap rings during disassembly.
Remove only one wheel from the sweeper.
Remove the retaining rings and washers which hold
the ratchet gear on the brush shaft.
,, Slide the gear off of the brush shaft. (Look for the
drive pin, which may fall out of the brush shaft when
the ratchet gear is removed.) See figure 29.
To reassemble, insert the drive pin through the hole
near the end of the brush shaft. Make sure the pin
slides back and forth easily in the shaft.
Lightly grease the shaft and fill the ratchet gear with
grease. Assemble the ratchet gear back onto the
shaft.
Lightly grease the axle and the gear teeth on the
wheel, and then reassemble the wheel. The brushes
should rotate only during forward rotation of the
wheel. If the brushes are driven (rotated) by both
forward and reverse rotation of the wheel, the drive
pin is jamming in the ratchet gear. Disassemble to
clean and lubricate the drive pin and the ratchet gear.
, Remove the second wheel and repeat the procedure.
RATCHET
GEAR
FIGURE 29
Wheels skid when sweeping.
Brushes set too low.
, Brushes are jammed
Wheels are jammed.
14
, Adjust height till brushes are 1/2"
down into grass.
, Stop sweeper. Remove obstruction.
Remove one wheel at a time to check
for obstruction or damage. Refer to
Service and Adjustments section.