In the front and rear brake drum faces you should see 2 holes about 12mm/1/2″ dia.
Rotate the drum until, through that hole, you see a slotted mushroom screw head which operates the Micram “snail” adjuster for the brakes. You might need a torch.
With a large screwdriver rotate the screw anti-clockwise to slacken the shoes off.
Phase 1 front brakes have 1 adjuster and rears a different setup with a bisector arrangement and a notched disc that is accessed through the hole and rotated horizontally to adjust. These bisectors can be notoriously troublesome and anyone who has problems with them may contact me or Mike and we will try to help.
Phase 2 front brakes (as on the P1) have two adjusters and the rears 1 adjuster as first described above.
DO NOT try to release the drums by hammering the drum edges, they are brittle cast iron and will break. Use a gear puller but first of all remove the hub grease cap and centre the gear puller on the end of the hub spindle taking care not to damage the spindle.
