Craftsman 172.27673 - Manual (Page 21)

MAINTENANCE coni.
BRUSH REPLACEMENT (see Fig. 11,11a, 11b and 11c)
1. Unplug the Sander.
WARNING: Failure to unplug the sender could result in accidental
starting causing possible serious personal injury.
2. Remove (3) screws from top cover
of Sander and remove top cover (see Fig. 11).
3. Locate the (2) Carbon Brush / Brush Holder
Assemblies (see Fig. 11a). They are connected
to red wire lead terminals and are in position
on each side of the armature.
4. Carefully lift these (2) assemblies (see Fig. 11a and 11b)
out of their positions (NOTE: Remember how
they are positioned so that you can put them
back in position correctly.)
5. Check the ends of the carbon brushes (see Fig. 11b)
for wear. If either brush has less than 1/4-in. length
of carbon remaining, replace both. DO NOT
REPLACE ONE SIDE WITHOUT REPLACING
THE OTHER.
6 . To replace assemblies, disconnect
the red wire lead terminals from the
assemblies (see Fig. 11c), attach
new assemblies to the lead terminals
and place the assemblies back into
their original positions next to the
armature. Make sure the curvature
of the end of the brushes matches
the curvature of the armature and
that the brushes move freely in
brush holder assemblies.
7. Reassemble the top cap with the
(3) screws and do not overtighten.
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