Norton Commando Workshop Manual

## Brakes, Weels and Tyres

# H

5 | Either by careful levering or by the use of grip pliers, release one end of each brake shoe spring. Take care not to lose the springs if they should fly when released. Also, take great care not to damage the spring retaining hooks on the brake shoes.
6 | Lift both brake shoes clear.
7 | The brake cover plate can be dismantled further by detaching both ends of the expander lever tie rod, removing the nut and washer from each expander and lifting clear both expander levers. The expander can then be removed for cleaning and greasing and if necessary the gauze covers can also be removed.
8 | Reassembly of this brake is a straight reversal of the dismantling procedure. The brake shoes are identical. When reassembling the brake, lightly grease the expanders and expander bosses in the cover plate and also the pivot pins and working areas at the ends of each brake shoe. Take care to ensure that the brake shoe springs are properly fitted at both ends, and that the circlips are correctly located to the pivot pins.
Front Brake with High Performance Modification - See Fig. H14
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 | Flatten back the tab washers at the pivot pin set screws and remove both set screws.
5 | Remove the brake support plate. This may prove tight to remove from the pivot pins and expander cams in which case careful leverage may be applied beneath the plate providing the support plate is not distorted at all.
6 | Either by careful levering or by the use of grip pliers, release one end of each brake spring. Take care not to lose the springs if they should fly when released. Also take great care not to damage the spring retaining hooks on the brake shoes.

7 | Lift both brake shoes clear.
8 | The brake cover plate can be dismantled further by detaching both ends of the expander lever tie rod' removing the nut and washer from each expander and lifting clear both expander levers. The expanders can then be removed for cleaning and greasing and if necessary the gauze covers can also be removed.
9 | Reassembly of this brake is a straight reversal of the dismantling procedure. The brake shoes are identical. When reassembling the brake, lightly grease the expanders and expander bosses in the cover plate, 'ihe pivot pins, working areas at the end of each brake shoe and expander cam end spigots. The latter is imperative and molybdenum disulphide grease is recommended at this point. Take care to ensure that the brake shoe springs are properly fitted at both ends before the brake support plate is offered into position. If a new support plate is being fitted, do not open the pivot or expander cam holes at all to ease fitting, or the whole purpose of the modification to tie the pivots and expanders in a fixed relationship will be lost. After fitting the plate securing screws and tab washers, tap the tab washers into position as in Fig. H14.

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