Service Manual Manual

40 Maintenance Basics – Motor

Rotor Assembly Replacement

1. Remove and set aside:

• two motor housing scr

ews

(not shown)

• motor housing (not shown)

• plastic fan A (discard old fan)

• two coil screws and lock washers

• coil (keep wires connected) D

Remove and discard the rotor E and two plastic

brackets C.

3. Press the new plastic bearing bracket onto the threaded

brass inserts in the front of the motor case.

4. Install new r

otor assembly by inserting the shaft (helical

gear side) onto the gear case.

5. Place the coil ov

er the rotor and keep the copper-shaded

poles on the right-hand side (same side as the on/off switch).

6. Snap into place the second plastic bearing bracket on

the rotor.

7. Insert two self-tapping screws (w/lock washers).

8. Starting at an angle, pr

ess fan (with hub side down) onto

the rotor shaft.

9. Reinstall two motor housing screws and tighten the

self-tapping screws to secure the motor housing cover.