Motor; Carbon Brushes - Stihl E 140 Service Manual

5.

MOTOR

5.1

Carbon Brushes

•
Take out the screws.
- Remove the commutator cover.
•
Pull the wire off the connector
tag.
Pull the brush holder forwards and
take it away.
10
Note: The friction generated by
the carbon brushes causes the
commutator surface to wear gra-
dually and eventually leaves se-
rious scores. These scores cause
increased sparking between the
carbon brushes and commutator.
If the carbon brushes can be re-
used, do not change their installed
positions.
•
Inspect commutator before fitting
the carbon brushes and replace
the rotor if necessary -
- Check that the carbon brush mo-
ves freely in the brush holder.
•
Fit the brush holder so that the
top and bottom lugs slide into the
slots in the housing.
- Push wire onto connector tag.
- Refit commutator cover and
tighten screws to 3.0 Nm
(2.2 lbf.ft).
see 5.2.