Gear Housing - Intermediate Shaft - Husqvarna DM 230 Workshop Manual

5 GEAR HOUSING – INTERMEDIATE SHAFT
C
1
2
8
B
A
510 22 11-01
Function
The gear housing contains a transmission that reduces the high speed of the
electric motor to a lower speed on the spindle shaft. The transmission has been
constructed on two shafts: intermediate shaft (A) and spindle shaft (B).
The electric motor powers the top gear wheel on the intermediate shaft. This
gear wheel has a slip clutch to the intermediate shaft to protect the operator in
the event of jamming.
The transmission has three gear selection positions that are controlled by the
knob (C). Change gear when the motor is idle.
Service work
The work procedure dictates that the complete intermediate shaft must always
be dismantled first.
However, the spindle shaft with attendant components, is dismantled into
individual parts from the gear housing. Following dismantling of the compo-
nents, the actual spindle shaft can be removed from the gear housing.
Dismantling – inter-
mediate shaft
1. Position the puller under the
two upper gear wheels.
2. Prepare for dismantling as per
the illustration. Press the shaft
up using the counter stay device.
The helical gear has a slip clutch
to the intermediate shaft.
Slip clutch
Remove the nut.
Dismantling – intermediate
shaft
The intermediate shaft is force fitted on
the ball bearing at the bottom of the gear
housing.
Method
To dismantle you need a small standard
puller with long handles, two spacers
(wood blocks at least 15 mm high) and a
bridge between them, e.g. a heavy metal
object.
1. Position the puller under the two
upper gear wheels.
2. Prepare for dismantling as per the
illustration. Press the shaft up using the
puller.
The motor shaft powers the helical gear.
There is a slip clutch between the drive
and intermediate shaft.
Slip clutch
Use special tool 510 22 11-01 to lock the
shaft.
Remove the nut.