Chieks and inspections

1. Unweld the connections of the three stator phases to the rectifying unit, then separate them.

1. Slacken the four fastening screws and remove the rotor complete with bearings from the drive side support.

1. Using a suitable pulley tool, remove the rotor bearings.
   2. Retrieve the cover plate.

CHIEKS AND INSPECTIONS

CAUTION: Accurately clean the components with a jet of compressed air before proceeding with electrical tests.

Checking brush wear

• Check the outside of the voltage regulator for signs of damage.
• Change the regulator if the brushes are broken or if the protrusion "a" is lower than specified.

Minimum brush length
a = 7 mm

• Also check that the brushes run smoothly and that their springs are stiff enough to ensure good contact of the brushes on the collectors.

Continuity tests for the rotor winding

• Check that the resistance of the rotor winding is within the specified rates connecting the tester prods on the collector rings.