Operating
Instructions
Initial Installation
2K120/2K121
18
3.4
Gearbox – fit
The M8 set screw (9) must be screwed in and
tightened at the parallel key with 18 Nm until
firmly home. Make sure you coat the threaded
pin with liquid seal before installing it.
Make sure that the O-ring (10) is in the correct
position during installation. The O-ring is delivered
loose with the gearbox and has to be coated with
grease before being inserted into the seal groove
in the housing (6).
Check the position of the gearbox shift
mechanism. The sliding sleeve must be in the
1
st
gear position (“low” gear ratio).
Take up the gearbox and place it onto the motor
flange. Carefully bring the sun gear/hub
connection together when doing this.
NOTE
The external spline of the sun gear must be guided
into the internal spline of the hub. This can be
made easier by slightly turning the motor shaft
or the gearbox output to the left or right.
Hold the electric motor by the eye-bolts. Then
carefully guide the motor shaft with fitted drive
hub into the gearbox.
The gearbox housing, adapter plate and motor are
bolted together using four/eight hexagon bolts
(11).
Fill the gearbox with oil and connect up the
recirculating lubrication system and the power
supply. The breather outlet must always be at the
top, regardless of the installation position. The
breather is screwed in to the B5 position ex-works.
The gearbox is now ready for use.
CAUTION
The gearboxes can be operated under the same
degrees of protection as those defined for AC and
DC motors.
When setting up, make sure that the motor
cooling air can flow in and out unhindered.
NOTE
Before taking the electric motor/gearbox assembly
into operation, check that the gearbox output can
be turned by hand.
In the case of drive units that are fixed on the
gearbox flange or housing, the motor can be
supported on the B-side so that it does not vibrate.
1
st
gear position:
A Brake disc
B Sliding sleeve