i removed the hogshead for reparation. Now i clean the surface for the seal. Between the motorblock and the mac coil where the felt seal is located, there are 4 plastic pieces. What is this plastic for? Are these the laminated mag coil shims?
Those are magneto field coil shims. Normally they are laminated brass, however somebody used different material. They should not be under the felt seal.
Don't remove them, or you will disturb the distance between the magneto magnets and coils. If they are in the way of the felt seal, bend or cut away just the part that interferes with the felt.
Thanks for the answers, i will cut away the part that interference with the felt.