You have to look at the first page and determine which column your machines parts are in, IE: code 4150 shunt field coils are FJW5-Z sereis coils FJW115-N code 6073 shunt field coils are FJW5-Z series coils FJW115-N code#6792 shunt field coils are FJW5-Z series coils FJW115-N code#7307 shunt field coils are FJW5-AJ series coils FJW115-T code# 8244 shunt field coils are FJW5-AK series coils FJW115-T