Thank you for answering . Please excuse my ignorance on this subject
Do mean it’s best to use the stem with the Plastic crown that came with the movement?
And please could you let me know what the ‘set’ position is ?
Hi Gary at all times unless testing the movement leave the battery out, whilst manipulating the stem into position . It will be best to use the stem provided with the module. some of the modules require you to put the stem into set position before removing as this keeps the clutch assembly and associated gears in place to enable an easy fit of the stem. Failure to do so causes the clutch to drop requiring re alignment before the new stem can be fitted. To do that you need to remove the calendar work to gain access to the keyless work. I have attached the tech sheet which covers this movement for you. good luck
ETA 955.102, 955.112, 955.122, 955.132, 955.402, 955.412, 955.422, 955.432.pdf