A SERVICE OF

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92
52. Changing the motor pinion
Note:
The motor pinion must only be removed when a rotor is exchanged.
Removal:
z Remove the motor in accordance with point 49 of this manual.
z Insert two screwdrivers of the same width between pinion 58 and the motor bearing (fig. 116).
z Rotate the two screwdrivers in opposite directions, thus prizing pinion 58 off the shaft.
Note:
The old motor pinion gear is no longer usable.
Refitting:
z Support the rotor shaft at the opposite end and push on the new motor pinion.
z Measure the simulated leakage current in accordance with section 58 of this manual.
z Fit and glue on outer disk 172.
z Fit the motor in accordance with section 49.
z Carry out an electrical safety test in accordance with VDE 0701 using testing appliance ABB Metrawatt
M 5013.