Firstly apologies for reviving a dead thread. This is my first post on the forum.
Recently repaired my trigger winder and taken some pictures of the teardown.
Hope someone finds the pictures useful because there's not much information available online on taking one apart.
Peel back the stuck on covering and keep aside.
The tape backing is very tacky and can be reused.
Remove screws marked in red.
Remove single screw at the bottom.
Removing the top plate revealing winder innards.
Highlighting gear and bearing assembly.
In background is corresponding pin that holds the gear and bearing assembly in place.
Closer look of gear and bearing assembly.
The assembly comes apart by sliding the sleeves off the bearing.
Bearing is a one way direction bearing part no. NTN NHF04
The reason the trigger winder stops advancing film is because the sleeve (made from aluminium) has worn off.
Slipping whenever the trigger is pulled.
Highlighting in red where sleeve makes contact with the bearing.
Simple fix is to cut a piece of plastic to use as a shim.
Place the plastic shim against the bearing housing and slide the sleeve back over it tightly.
Trim the access plastic and reassemble the trigger winder back together.
It's low tech and simple. No more slipping and film advance works.