05-02-2019, 05:23 AM
You have me beat. There still seems to be doubt about the field connections. The dynamo should motor in the direction of normal operation.
To get a larger polarising current through the field the 3rd brush can be temporarily moved until it contacts the earth brush, or be linked to it. Whilst briefly applying battery between the external F terminal and the body bang the dynamo body a few times with a hammer.
To avoid current through the armature, the D output terminal can be left unconnected.
To get a larger polarising current through the field the 3rd brush can be temporarily moved until it contacts the earth brush, or be linked to it. Whilst briefly applying battery between the external F terminal and the body bang the dynamo body a few times with a hammer.
To avoid current through the armature, the D output terminal can be left unconnected.