Apparatus and method for winding coils of dynamoelectric machines, wherein a coil comprises members formed of leg portions (19a, 190a). The leg portions (19a, 190a) being inserted in slots (17, 170) of cores (18, 180) of the dynamo electric machine, wherein the slots (17, 170) are provided with insulation members (33, 330) for lining the walls of the slots (17, 170). The leg portions (19a, 190a) are inserted in the slots (17, 170) of the cores (18, 180) of the dynamoelectric machines. A passage member (20, 200) having passages (22, 220) is provided aligned with a core (18 ,180) to align the passages (22, 220) with the slots (17, 170). The area (23, 230) adjacent an edge of a passage (22) is aligned with the end (32, 320) of an insulation member (33, 330) of a slot (17, 170) for engaging the end (32, 320) of the insulation member (33, 330) during insertion of the leg portions (19a, 190a).