Husqvarna DM220 Workshop Manual page 8

4
3 4
8
DISMANTLING BASIC MODULES
5
1-5-
4-8-
A
OIL
Four screws connect the electric motor to the gear
housing.
1. Remove the two screws at the location of the
connector for the cables.
2. Remove the two screws on the opposite side, under
the position of the circuit board.
3. Remove the cover for the stand mount.
4. Pull out the carbon brushes and lock them with the
spring to the side of the carbon brush.
5. Lift off the electric motor housing. Note the earth
wire in the gear housing.
If you need to use a puller to press the bearing from
its seat, you must first remove the magnetic sensor at
the centre of the shaft.
2-6-
Gear housing/gear box cover
Remove the stand mount. It sits with a press fit in the
gear housing and gear box cover.
Use a brass mandrel and angle this as shown in the
figure to the left. Knock with a small metal hammer
alternately on both sides so that the stand mount
3-7-
gradually lifts equally on both sides.
Lift off the air line for the fan. Store this in conjunction
with the rotor as it can easily be overlooked when re-as-
sembling.
Drain the oil
Remove the drain plug and drain the gearbox oil.
(Refilling: Volume 0.25 litre. Oil quality: Mobil Lube
1 SHC 75W-90, Shell Spirax ASX 75W-90 or equivalent
quality.)
Type A
Four screws connect the gear housing to the gear box
cover, two on the inside of the fan and two on the out-
side next to the oil plug.
Note that the screws on the fan have O-rings that seal
the gear box oil.
Type B
Four screws on the gear housing connect it to the gear
box cover
Pull the gear box cover, together with the rotor, from
the gear housing. Remove the rotor from one side as
described in the "ROTOR" chapter.