Craftsman 137.21807 - Manual (Page 44)

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MAINTENANCE
NOTE: If excessive looseness
is observed in any part of the
blade raising mechanism or tilting
mechanism, take the complete unit to a
Service Center.
LUBRICATION
All motor bearings are permanently
lubricated at the factory and require no
additional lubrication. On all mechanical
parts of your table saw where a pivot
or threaded rod are present, lubricate
using graphite or silicone. These dry
lubricants will not hold sawdust as
would oil or grease.
REPLACING THE CARBON
BRUSHES (FIG. hh, ii)
Always disconnect the plug from the
power source before inspecting the
brushes.
The carbon brushes included with the
unit will last approximately 50 hours
of running time, or 10,000 ON/OFF
cycles. Replace both carbon brushes
when either has less than 1/4 in. length
of carbon remaining, or if the spring or
wire is damaged or burned.
1. Remove the blade guard, blade,
rip fence, miter gauge and stand
assembly from the table saw.
2. Lower the blade height to its
minimum setting. This will make the
brushes’s location easier to access.
3. Place cardboard or an old blanket
on the floor to protect the saw table
surface.
4. Place the saw upside down on the
protective material.
5. Tilt the blade elevation/tilting
handwheel (1) to the 45° position.
6. Remove the black plastic cap (2)
from the side of the motor (3).
7. Carefully remove the spring-loaded
cap, and then pull out the brush and
replace.
8. Replace the other side.
9. The ears on the metal end of the
assembly go in the same hole
the carbon part fits into. Do not
overtighten the plastic cap.
10. Carefully set the saw in a upright
position on a clean level surface.
11.Replace the blade guard, blade,
rip fence, miter gauge and stand
assembly to the table saw.
NOTE: To reinstall the same brushes,
first make sure the brushes go back in
the way they came out. This will avoid
a break-in period that reduces motor
performance and increases wear.
Fig. hh
Fig. ii
WARNING
!
1
2
3
2
3