Mounting Of The Vertical Drive Shaft - ABB UCL Installation And Commissioning Manual

CAUTION
Make sure that all locking devices (on the bevel
gear, on the tap-changer and in the motor drive) are
mounted and the tap-changer and the motor-drive are
in the same service position.
Check that the motor-drive mechanism is at its exact position
according to Figs. 24 or 25. (BUE: The red mark on the brake
disk facing the red mark on the brake assembly, BUL: The
roller at the middle of the notch in the cam disk.) If not, loosen
the locking device and adjust it to its exact position. See
Fig. 44. Refit the locking device.

9.2.3 Mounting of the vertical drive shaft

1. Mount the bevel gear SA21 on the transformer with an
O-ring, SA20, clamps SA17 screws and washers; see
Figs. 50 and 51.
2. Fit the square shaft SA14 with protective tubes SA15
and SA16 and hose clips according to Fig. 28. Connect
the square shaft with the mounted coupling halves to the
motor-drive. Mount two coupling halves SA11 to the other
end of the square shaft and the shaft of the bevel gear;
see Fig 28. Push the shaft to the bottom of the fitting in
the coupling halves; see Fig. 31. Tighten the screws lightly
and check that the shaft can be moved approximately
2 mm in the axial direction (axial play). Check the
dimension shown in Fig. 30. Tighten the two screws;
A first and then the other; see Fig. 32.
3. Mount the protective tube with the larger diameter, SA16
to the bevel gear with a hose clip, and the other tube
SA15 to the flange of the motor-drive mechanism; see
Fig. 29. Leave about 3 mm of play to the flange ring for
water drainage.
48 Installation and commissioning guide UCL/VUCL | 1ZSC000562-AAZ en
Driving pin
Fig. 50.
Fig. 51. Bevel gear assembly.
SA18, SA19
SA17
SA21
SA20
SA11
SA16
SA10
SA15
SA14
Motor-drive
mechanism
SA20
SA18, SA19
SA17
Attachment flange
for the bevel gear