SERVICE AND ADJUSTMENTS

BRUSH REPLACEMENT

NOTE: Replace brushes one brush at a time.

1.Remove the hopper bag from the sweeper.

2.Loosen hex bolts and lock nuts on two single brush retainers which clamp one brush to the double brush retainers. DO NOT loosen or remove bolts which fasten double brush retainers to brush shaft.

3.Slide the brush out of the retainers, noting on which side of the brush the bristles overlap.

4.Install new brush, making sure the bristles overlap on the same side of the brush as before.

 

BRUSH ROTATION

 

OVERLAP

 

BRISTLES

 

DO NOT

DOUBLE

REMOVE

THIS BOLT

BRUSH

 

RETAINER

 

OVERLAP

SINGLE

BRUSH

BRISTLES

RETAINER (2)

 

GEAR AND DRIVE PIN SERVICE

IMPORTANT: Do Not remove both wheels at the same time to avoid mixing of parts. (The pinion gears are not interchangeable. The ratchet end of the gears is marked "R" or "L".) Make notes on the position of all parts before removing them.

Remove the hub cap to expose the head of the bolt.

Remove the bolt, washer, nut and step spacer.

Remove the wheel and washer from the axle.

To remove the larger 27 tooth gear, remove the retaining ring and then remove the gear and washers.

To remove the smaller pinion gear, remove the retaining ring and then remove the gear, the drive pin (located in the brush shaft), the washers and the spacer. See figure 22.

Clean all parts and replace worn parts.

Lightly grease the shafts and the axle.

Lightly grease the drive pin and the ratchet teeth inside the pinion gear. Reassemble the drive pin, pinion gear, the 27 tooth gear and the washers onto the shafts. Lightly grease the teeth of both gears.

Lightly grease the gear teeth on the wheel and then reassemble the wheel, bolt and washers. Assemble the step spacer and nut onto the bolt, fitting the small end of the spacer into the sweeper housing. Tighten the nut securely.

Repeat on the other end of the sweeper.

Check that the brushes rotate only during forward motion of the sweeper. If the brushes are driven in both forward and reverse, the drive pin is jamming. If the brushes are driven only in reverse, the pinion gears have been switched.

FIGURE 21

STEP SPACER

 

27 TOOTH GEAR

SPACER

DRIVE PIN

PINION GEAR

FIGURE 22

12