By macg4
#96721
Just rebuilding the rear brake assy after hitting a pothole in the dark and shearing the shoe pin. The joys of post covid riding. Question:- Should the bush which holds the brake cam "float" It seems like it should, but the naturally the factory have painted over the pins...REgards.
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By Adrian
#96724
Best advice seems to be to slacken the pivot mount off, apply the brake and retighten the pivot mount to centralise the shoes in the drum.

A.
User avatar
By Haggis
#96725
From a previous post about broken brake shoes.

Note that the bolt holes in the cover plate for locating the rear brake cam bush are slotted,
to enable the brake shoe assy. to be centered in the drum. The brake cover plate assy with the
shoes should be fitted over the spindle into the brake drum and the brake applied as hard as
possible by means of the operating lever. This will centre the shoes in the drum. The brake
cover plate assembly should then be removed and the screws should then be tightened fully
and secured with the lock nuts. If the shoes are not correctly centred, the brake will be either
ineffective or too fierce. depending on whether the trailing or leading shoe first makes contact
with the drum. With the brake assy, correctly centered and screws securing the cam housing
correctly tightened wear on both linings should be approx equal."
By macg4
#96726
Seems logical. Infinitely repairable our machines. Thirty quid all in from our hosts. Dread to think what the cost would be for something like a GS, and it wouldn't get done on the main stand in your garage !
By vince
#96729
Hi, I had one bike through the workshop where a loose floating bush had caused a lock up that destroyed the backplate and had punched a hole through the brakedrum. Vince.
By macg4
#96735
Well there you go, both sides of the argument. Must admit though these backplates do seem rather fragile..
Can't grumble at our host's service. Sheared the pin at 11.20 on the 12th, back on the road 12.40 on the 13th..

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