1 - protective cover of the electric motor; 2 – right fan casing; 3 - left fan casing; 4 - fan support
Motor type 45.3730
Consumed current at maximum speed, A, no more | 14 |
Maximum fan speed, min–1 | 4100 |
1. Loosen the two screws securing the heater fan.
2. Remove the fan by disengaging its support.
3. Peel off the foam seal from the right fan shroud.
4. Remove the support from the fan shroud.
5. Using a screwdriver, pry off the plastic latches of the fan casing, disengage them...
6....and separate the casing parts.
7. Unfasten the two spring latches by prying them with a screwdriver.
8. Remove the engine cover.
9. Take out the motor with the fan impeller.
1 - fan impeller
2 - embedded nut
3 - brush holder
Warning. Do not remove the fan impeller from the motor shaft, so as not to disturb the balance.
10. Loosen the two screws securing the brush holder.
11. Remove two cage nuts.
12. Remove the brush holder.
13. Examine the collector. If it is heavily soiled or has scratches, risks, burn marks on it, clean the collector with a fine sandpaper. For other faults, replace the engine.
14. Remove the springs from the guide brushes.
15. Insert two cage nuts.
16. Put an insulating washer on the shaft.
17. Carefully bend the edges of the guides.
18. Insert the brushes into the guides as far as they will go.
19. Install the brush holder on the motor.
20. Insert the brush springs into the guides.
21. Bend the edges of the guides.
22. Slide two spring clips over the cage nuts.
23. Insert the motor into the left fan shroud.
24. Install the engine cover and fix it with spring clips (see note).
Note. For ease of installation of spring clips, tie them with a thin wire, without tightening it. When installing the engine cover, hold the clamps by the wire, otherwise they will be pulled off the nuts by the stator magnet.
25. Connect and snap together the left and right fan shrouds. Put a plastic support on the projections of the casings.
26. Glue the foam seal to the fan shroud.
27. Before installation, inspect the rubber pads, replace torn or lost elasticity.
28. Note that plastic spacers are inserted into the cushions.