Replacement Of Gaskets Between Barrier Board Of Steel And Selector Switch Unit; General; Replacement Of Front Cover And Top Cover Gaskets; Tools Required - ABB UZE Repair Manual

3 Repairs and adjustments
Presspahn washer for
axial play adjustment
Fig. 7. Play check/adjustment.
18. Close the front cover and tighten the domed nuts with a torque of 42 Nm.
19. Reconnect the conductors inside the transformer, loosened in step 7.
20. Refill the transformer with oil. For information about oil filling, refer to the documentation
21. Fill the on-load tap-changer with oil. For information about oil filling, see the Mainte-

3.2 Replacement of gaskets between barrier board of steel and selector switch unit

3.2.1 General

Follow section 3.1 where applicable and with following exceptions:
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3.3 Replacement of front cover and top cover gaskets

3.3.1 General
This instruction guides you on how to attend to an oil leakage.

3.3.2 Tools required

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■
22
1)
Shaft
Current collector
Min. 2 mm
1) The shaft must be pushed as much as possible
in the direction shown by the arrow
for the transformer.
nance Guide.
Distance pieces of wood or pressboard thickness approximately 13 mm.
Polyvinylacetate adhesive is not needed.
Instead of section 13 e:
The studs are lubricated with grease for ball bearings. Tighten the M8 nuts with dyna-
mometric wrench 13 Nm, the first time in sequence according to Fig. 6 and the second
time without special sequence. Re-tightening of the nuts shall be done earliest 5 hours
after the previous tightening with 13 Nm without special sequence.
Box wrench (19 mm)
Pump with connection fitting the oil valve
Min. 0 mm
Washer/shim
Epoxy moulding
Coupling
Shaft
Min. 0,1 mm
1ZSE 5492-128 en, Rev. 4
fm_00103