Field Coils

Check for open or grounded coils using test lamp or voltmeter and battery, connected in series. If coil is found to be defective, replace all coils as they should not be serviced individually. Mark yoke and pole shoes so shoes may be installed in original position. Remove fiber insulating washers and sleeve from field coil terminal post and remove insulating band from commutator end of yoke. Install a suitable tool (Pole Piece Expander) in starter and expand tool against pole pieces. Remove pole piece screws. Remove field coils and pole pieces from yoke. Carefully unsolder the field coil tappings from terminal post. To install, reverse removal procedure.