SERVICE AND ADJUSTMENTS
BRUSH REPLACEMENT
NOTE: Brush replacement should be done one brush at
atime.
•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 24.
•Slide the brush out of the retainers, noting on which side of the brush the bristles overlap. See figure 24.
•Install new brush, making sure the bristles overlap on the same side of the brush as before. See figure 24.
BRUSH ROTATION
OVERLAP
BRUSH BRISTLES
SHAFT
SINGLE
BRUSH
RETAINERS
DOUBLE BRUSH RETAINER
OVERLAP
BRISTLES
BRUSH ROTATION
FIGURE 24
GEAR AND PAWL SERVICE
IMPORTANT: Do not remove both wheels at the same time to avoid mixing of parts. (The R.H. and L.H. pinion gears are not interchangeable.) Make notes on the position of washers and snap rings during disassembly.
•Remove one wheel at a time, following the instructions in the MAINTENANCE section.
•Remove the retaining rings which hold the gears on the brush shaft and the jack shaft.
•Remove the pinion gear, washer and drive pin from the end of the brush shaft. (The drive pin may fall out of the brush shaft when the pinion gear is removed.)
•Remove the idler gear and washers from the jack shaft.
•Clean all parts.
•Replace worn parts.
•To reassemble, lightly grease the jack shaft and the brush shaft. Insert the pin into the hole in the brush shaft. Make sure the pin stays in the shaft.
•Lightly grease the teeth on both gears and fill the recess of the pinion gear with grease. Assemble both gears back onto the shafts.
•Lightly grease the axle and then reassemble the wheel onto it. 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 pinion gear. Disassemble and clean and lubricate the drive pin and pinion gear.
WASHER WASHER
IDLER
GEAR RETAINING
RING
DRIVE WASHER
PIN
FIGURE 25
PINION GEAR
TROUBLESHOOTING
Wheels skid when sweeping. | • | Brushes set too low. | • Adjust height till brushes are 1/2" |
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| down into grass. |
| • | Brushes are jammed | • Stop sweeper. Remove obstruction. |
| • | Wheels are jammed. | • Remove one wheel at a time to check |
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| for obstruction or damage. Refer to |
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| Service and Adjustments section. |
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