With the movement stripped, the jewels and bushes are cleaned with sharpened peg wood and then everything is cleaned in the automatic cleaner. The various parts are put into the three baskets with smaller and delicate parts in the sub baskets.
The cleaner is a 4 jar automatic Elma RM with a cycle as below. There are three rinsing cycles as leaving any of the cleaning solution on the moving parts can be a major contributor to wear:
Jar 1: Cleaning L&R Extra Fine — 5 minutes clean + 2 minutes spin off
Jar 2: Rinse 1 L&R Rinse No. 3 — 3 minutes rinse + 2 minutes spin off
Jar 3: Rinse 2 L&R Rinse No. 3 — 3 minutes rinse + 2 minutes spin off
Jar 4: Rinse 3 L&R Rinse No. 3 — 3 minutes rinse + 2 minutes spin off
Drying chamber: 7 minutes drying
After cleaning, the various parts are stored in these containers which have clear plastic covers in order that each part stays clean and can be reviewed. The first container shows the basic watch parts and the second shows the chronograph parts and the keyless works.
First, the basic movement jewels and bushes are reviewed for cleanliness, damage and wear. A selection are shown below and all are clean and without significant wear.
The posts on the plate are also checked where wheels will be installed and these are fine.
This is the area where the crown wheel sits, which is part of the winding mechanism. As it’s a manual wind watch, this particular calibre can suffer from a lot of wear here but, this one is fine.
The individual wheels and pivots are checked during assembly which can now start in the next stage with the balance.