Lubrication; How To Change The Lubricant In The Gearbox; How To Check The Carbon Brushes - Clarke American Sanders B2 Operator's Manual

MAINTENANCE

Lubrication

The machine is completely lubricated. The bearings and
gears in the gear unit have enough lubricant for approxi-
mately six months of normal operation. All other bearings
are sealed and have enough lubricant for the life of the ma-
chine. 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 fi gure 9.
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 fl ow out the vent
hole. If none appears it may be necessary to add ad-
ditional 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 fi gure 10.
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 fi gure 11.
3. To replace the brushes, disconnect the fi eld wire
(A) from the brush holder (B). Then remove the two
screws and washers (C) securing the holder to the
motor housing. See fi gure 12.
American Sanders B-2 (CE) Operator's Manual
Clarke ®
Lubricants
Qty Part No.
1 Qt. 16610A
1 Gal. 16611A
Figure 9
Figure 10
Figure 11
A
C
C
B
Figure 12
FORM NO. 70162B - 11 -
B
C
C
A