Maintenance; Personal Injury - Craftsman 172.259270 Operator's Manual

MAINTENANCE

WARNING:
! To ensure safety and reliability, repairs, maintenance and
adjustments MUST be performed by a qualified service technician at a
Sears Service Center.
WARNING:
! For your safety, ALWAYS turn off switch and unplug sander
from the power source before performing any maintenance or cleaning.
It has been found that electric tools are subject to accelerated wear and possible
premature failure when they are used to work on fiber glass boats and sports cars,
wallboard, spackling compounds or plaster. The chips and grindings from these materials
are highly abrasive to electrical tool parts, such as bearings, brushes, commutators, etc.
Consequently, it is not recommended that this tool be used for extended work on any
fiberglass material, wallboard, spackling compound or plaster. During any use on these
materials, it is extremely important that the tool is cleaned frequently by blowing with
an air jet.
WARNING:
! Always wear safety goggles or safety glasses with side shields
during power tool operations, or when blowing dust. If operation is dusty, also
wear a dust mask.
ROUTINE MAINTENANCE
WARNING:
! DO NOT at any time let brake fluids, gasoline, petroleum-
based products, penetrating oils, etc. come in contact with plastic parts.
Chemicals can damage, weaken or destroy plastic, which may result in serious

personal injury.

Periodic maintenance allows for long life and trouble-free operation. A cleaning and
maintenance schedule should be maintained. As a common preventive maintenance
practice, follow these recommended steps:
WARNING:
For your safety, ALWAYS turn off switch and unplug sander
!
from the power source before performing any maintenance or cleaning.
1. When work has been completed, clean the tool to allow smooth functioning of the tool
over time. Clean the tool with compressed air.
2. Use clean damp cloths to wipe the tool. Use a brush to brush off and clean the sander's
Backing Pad.
3. Keep the motor air openings free from oil, grease and sawdust or woodchips, and
store tool in a dry place.
LUBRICATION
Your Craftsman® Professional Orbital Sander has been properly lubricated and is ready to
use. No further lubrication is needed under normal operating conditions. All bearings in the
sander are lubricated for the life of the tool.
20
MAINTENANCE cont.
BRUSH REPLACEMENT (see Fig. 10, 10a, 10b and 10c)
1. Unplug the sander.
WARNING:
Failure to unplug the
!
sander 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. 10).
3. Locate the (2) Carbon Brush / Brush Holder
Assemblies (see Fig. 10a). They are connected
to blue wire lead terminals and are in position
on each side of the armature.
4. Carefully lift these (2) assemblies (see Fig. 10a and 10b)
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. 10b) for wear.
If either brush has less than 1/4-in.
length of carbon remaining, replace
Fig. 10a
both. DO NOT REPLACE ONE SIDE
WITHOUT REPLACING THE OTHER.
Assembly and
Carbon Brush
6. To replace assemblies, disconnect
Removed
the blue wire lead terminals from the
assemblies (see Fig. 10c), 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.
Fig. 10b
Assembly
Fig. 10c
Brush
Carbon Brush
Wire
Lead
Assembly
21
Fig. 10
Needle Nose
Pliers
Brush