Foredom Series L - Manual (Page 13)

12
Installation of New Shaft
1. After removing old shaft, loosen set screw on the new flexible shaft motor coupling and slide
coupling onto motor shaft.
2.Tighten set screw securely onto the flat of the motor shaft.
3.Slide motor connector back up over the shaft and tighten to
the left (counter clockwise).
4.Grease shaft prior to putting on the sheath. (See lubrication
instructions on page 11.)
5.Slide sheath over flexible shaft with plain fitting directed
toward the motor and into the motor connector. (Each end of
the sheath has a metal fitting one is plain, the other has a
groove around it to fit the handpiece.)
6.Adjust the shaft (page 5 and below) and tighten sheath set
screw in motor connector.
Shaft and Sheath Adjustment
Place the entire unit on a flat surface with shaft and sheath
extended straight. Adjust the exposed tip of the flexible shaft
so that it extends 3/4
″ beyond the sheath, as shown. This is
done by moving the sheath in or out of the motor connector.
When the correct adjustment is made, tighten the screw in the
motor connector.
Replacement of Motor Brushes
The motor brushes should be checked for wear periodically. When new, they are approximately
3/4
″ long. Replace them when they have worn to 1/4″. To remove brushes, disconnect motor
power cord and unscrew the brush caps. Be sure the curvature or contour of the motor brush tip
matches that of the outside of the housing curve.
New Motor Brush
Motor that needs
Brush replacement
motor
coupling
motor
shaft