Rotor Bearing; Fanwheel - Stihl E 140 Service Manual

5.3

Rotor Bearing

- Remove the rotor - see 5.2.
• Pull the ball bearing off the rotor
shaft.
•
Remove the nylon washer and
inspect it. Refit it so that its flat
side is against the commutator.
- Heat ball bearing to approx.
50°C (120°F) and push it on as
far as stop.
Check ball bearing in gear hou-
sing. If ball bearing is faulty, fit a
new gear housing - see 6.3.
- Install the rotor - see 5.2.
5.4

Fanwheel

- Remove the rotor - see 5.2.
• Rest fanwheel flange (see arrow)
on two flat steel bars (5x20x130
mm).
- Position flat steel bars with rotor
in a press.
Note: The rotor must hang freely.
•
Use a hot air blower to heat the
hub area of the brake drum.
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