Norton Commando Workshop Manual

## Brakes, Weels and Tyres

# H

supplied as spares requirements by the Factory. This is a matter of policy brought about by the fact that the brake linings require finishing after fitting to the shoes and this operation must be carried out with Factory accuracy if the brake is to be restored to full efficiency.
Rear Brake Dismantling - See Fig. H12
1 | Remove the rear wheel as in Section H3.
2 | Lift out the brake plate complete from the brake drum.
3 | Remove the springs from the shoes. This can be done either with grip pliers or by levering carefully with a suitable screwdriver. Take care not to damage the spring retaining hooks on the brake shoes. There may be a tendency for the springs to fly when one end is released thus care should be exercised to avoid loss.
4 | Flatten back the tab washer and remove the two hexagon headed screws securing the brake shoes to the brake plate bosses.
5 | Collect the tab washer and tie plate and lift away the shoes.
6 | Remove the nut securing the lever to the expander and lift off the lever.
7 | Withdraw the expander cam. If this is too tight to pass through the bush in the brake plate, the area of the expander cam inboard of the thread may have been damaged by overtightening of the nut. In these circumstances, this area of the expander should be eased down such as with emery tape so that it will pass through the bush.
Rear Brake Reassembly
1 | Clean the brake plate thoroughly and grease lightly the expander cam boss, pivot pins and bearing area of the expander cam.
2 | Fit the expander cam to the plate but do not secure yet from the other side.
3 | Assemble the brake shoes to the pivot pins and expander cam. If the brake shoes are of the late type with detachable thrust pads, ensure that the pads are in position between the shoe ends and expander cam.

4 | Fit the tie plate, tab washer (using a new one if necessary) and set screws which should be secured fully.
5 | Tap over the ends of the tab washer to the set screw heads.
6 | Fit the brake shoe springs - these are very strong and in consequence difficult to engage with the brake shoe hooks. Attach one end of each spring, tie a length of stout twine round the hook at the other end and stretch the spring by pulling hard on the twine. As the spring is held approximately in position, guide the end home on to the brake shoe hook using a screwdriver blade.
Front Brake - See Fig. H13
1 | Remove the front wheel as in Section H8.
2 | Lift out the brake plate complete from the drum.
3 | Clamp the brake plate in a vice at the brake torque stop peg.
4 | Remove the circlips from both pivot pins and collect the washers.

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