Operating Instructions
2K120/2K121
Repair
29
6.2
Gearbox – disassemble
(e. g. version with adapter plate, shaft seal and hub
bearings)
Proceed accordingly in the case of other versions.
•
Switch off the machine
•
Switch off the power supply
•
Disconnect the electrical connections
•
Disconnect the gearbox oil connections,
drain the gearbox oil
•
Undo the mounting bolts (11)
•
Pull the gearbox (6) off the adapter plate (5) and
drive hub (1)
6.3
Hub
•
Undo the threaded pin (9) used to radially secure
the fitted key
•
Use a removing device, e. g. three-arm puller, to
pull off the drive hub against the motor shaft
without heating the hub:
Alternatively, there are two threads (13) on the
end face of the drive hub which can be used to
secure the puller brace. Press off against a
removing aid (12) on the cover (8). Keep turning
the puller until the cover is at the motor shaft.
CAUTION
When disassembling the hub, ensure that the cover
(8) is centred on the motor shaft. Otherwise the cover
may cause the hub to jam when being pulled off.
Renew the end disc 28 DIN 470 after disassembly.
Clean before installing and coat the sealing edge with
liquid seal. Visually check the shaft seal and O-ring
and fit new ones if necessary.
3
10
9
1
2
8
12
13
5
6
11
7
4
1
Drive hub
2
Motor shaft
3
Motor
4
Hub bearing
5
Adapter plate
6
Gearbox housing
7
Shaft seal
8
Cover
9
Threaded pin
10
O-ring
11
Mounting bolt
12
Removing aid (cylinder
∅
20x50 mm)
13
Thread for removing device
