The clutch consists of two 4 1/4 inch steel disks with pad material glued on, on either side of a large gear plate. The disks are keyed to the shaft, and grip the gear plate when the plates are closed together.
I think the clutch has at some time been left engaged and one of the pads had stuck to the gear plate. Prising it apart has not gone terribly well, so ideally I would like to replace the clutch pad material.
Does anyone know what this is called and whether it can be bought anywhere? It is about 1/8" thick, very slightly compressible, grey material with a red coating on the unglued (ie active) side.