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MAINTENANCE

Lubrication

The machine is completely lubricated. The bearings and

gears in the gear unit have enough lubricant for approximately

six months of normal operation. All other bearings are sealed

and have enough lubricant for the life of the machine. No

lubricant is needed for the rotating disc guard.

How To Change The Lubricant In The Gearbox

To change the lubricant in the gearbox, follow this procedure:

1. Put the machine upside down on a bench.

2. Align one of the two holes in the rubber pad with one of

the three holes in the rotating disc guard.

3. Align both holes with one of the three screws in the

gear housing cover. Remove the screw from the gear

housing cover. See figure 10.

4. Align the holes with each of the other two screws, then

remove screws.

CAUTION:

Make sure no dust enters the gear

box. Damage could occur to the gear

box.

5. Remove the cover from the gear housing.

6. Remove the old lubricant from the gearbox.

7. Add ten ounces of Clarke American Sanders lubricant

to the gearbox.

CAUTION:

To prevent damage to the motor,

do not add more than ten ounces

of lubricant to the gearbox.

8. Using the three screws removed above, install the cover

on the gear housing.

9. Start the machine and let it run for 15 minutes. A small

amount of excess lubricant should flow out the vent

hole. If none appears it may be necessary to add

additional lubricant.

10. Wipe off excess lubricant and clear vent hole.

How To Check The Carbon Brushes

Depending on use, a set of brushes can be expected to last

250 hours and should be inspected sometime prior to that

time.

To check the brushes, follow this procedure:

1. Remove the motor cover. See figure 11.

2. Inspect the carbon brushes. Replace both brushes if

either brush has worn to 3/8" in length, or is worn to the

wear indicator. See figure 12.

3. To replace the brushes, disconnect the field wire (A)

from the brush holder (B). Then remove the two screws

and washers (C) securing the holder to the motor

housing. See figure 13.

Clarke American Sanders American B-2 Operator's Manual

Lubricants

Qty

Part No.

1 Qt.

16610A

1 Gal. 16611A

Figure 10

Figure 11

Figure 12

Figure 13

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