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rear drum brake problem

Posted: Wed Jul 26, 2006 10:25 pm
by JD
I put new brake shoes into my rear drum brakes back in Feb. Salisbury axle. Now that I'm badk on the road I've noticed that the left rear rubs/binds on one/both of the shoes. ?? I've slacked off both adjusting nuts to little avail - slightly better now. Binds every 180deg. I've taken off the drum and checked - as best I can - the positioning of the shoes inside the drum.... tried to make them even to start with. I measured across the drum in a couple of places at 90deg and it seems the same all round - 11" .... Can't see anything different in the set up compared to the other side. And again, can't loosen off the adjusting bolts so the wheel runs free all round.

Anyone with any sugestions?

Rgds
JD

Posted: Thu Jul 27, 2006 8:05 am
by John
Where did you get the shoes? Rovers tend to use a thinner lining than those found in North America. If the shoes are jobber or have been relined locally it is likely that the linings are too thick. They work better on worn out drums. You could find a shop that can arc then and you may get them to work. IF they are genuine Rover shoes then check to be certain that you have the shoes on correctly. There are leading and trailing shoes.

John

shoes

Posted: Thu Jul 27, 2006 10:01 am
by JD
John,

Shoes original purchased from U.K. Trek & Traction, sent for attachment to Vancouver.

Will check leading/trailing installation. At this time of writing, not sure how to tell the difference. Have looked at the overhaul manual, but it assumes some prior knowlege as a base line. Will also look at my Haynes.

Thanks for your reply.

Rgds
JD

Posted: Thu Jul 27, 2006 11:25 am
by John
back to your mention of grabbing every 180°, maybe you have an out of round drum.

Posted: Thu Jul 27, 2006 4:44 pm
by DaveB
I'd be inclined to think its an out of round drum, too. Also check that the drum is snug against the edges of the hub as well as all 3 screws in place on the hub, otherwise this can add to the problem. Take the drum off and put it on a brake machine and you'll know soon enough. Should cost you about $25 per side to get the drums turned - but get them properly measured first or you may end up with oversize drums and other issues...

Dave

out of round

Posted: Thu Jul 27, 2006 8:56 pm
by JD
Thanks for all the replies. Looks like an out of round issue. Even though we put the gauge on the drum and got 70K readings on several axis, putting the drum on the other wheel produced the same results - rubbing. So drum goes to machine shop tomorrow.

JD