32 replies to this topic

[rawky]

Hello,

I have a 1993 Italian Job, and my RR drum brake has an issue with binding every 3/4 of a turn. I have so far replaced;

• Drums
• Shoes
• Springs

Can someone tell me where to look next? Many Thanks

[Rob-T]

Hi rawky
Have a look and see if the handbrake cable quadrant is siezed on that side, this is where the cable is routed on the swinging arm.
If it is siezed up it will hold the tension on the springs not allowing the shoes to release off the drum.
Rob

[rawky]

Ok, will check it out! If that is fruitless, what else could it be?

Many Thanks.

[Jordie]

check wheel bearing, take drum off and see if it turns freely etc. one less thing to narrow down.

[Cooperman]

Tighten the brake adjuster until it just won't tiighten any more, then back it off until the drum rotates with just a slight resistance. If it does not then turn evenly, albeit with some resistance, the drum is possibly ovalised slightly.

[Giant Mini]

slave cylinder ? although would expect that to bind all the time really....

[Cooperman]

slave cylinder ? although would expect that to bind all the time really....

Unlikely as the slave will hold the shoes in one constant position, and you use the adjuster screw to set the amount of resistance.

[rawky]

Tighten the brake adjuster until it just won't tiighten any more, then back it off until the drum rotates with just a slight resistance. If it does not then turn evenly, albeit with some resistance, the drum is possibly ovalised slightly.

I have done this, and then replaced the drum, with no change whatsoever! I can only presume the stud axle is bent maybe?!

slave cylinder ? although would expect that to bind all the time really....

Regardless, I'll be changing those soon as the bleed nipples are seized...


Cheers

[ministar]

Have a look at the right angled pivot joint, which is to do with the handbrake! The pivot gets mucked up then rust fuses itself together. If it doesnt move, take it off and free if off till it moves freely.

Edit... Minispares product http://www.minispare...ty=pb&pid=33289

Edited by ministar, 08 December 2011 - 07:22 PM.

[rawky]

Have a look at the right angled pivot joint, which is to do with the handbrake! The pivot gets mucked up then rust fuses itself together. If it doesnt move, take it off and free if off till it moves freely.

Edit... Minispares product http://www.minispare...ty=pb&pid=33289

Forgot to mention, have changed those too...! What else can it be?

[rawky]

BUMP

[Ethel]

If it's a constant fault you could detach the handbrake linkage to eliminate it. Opening the bleed screw would do the same for an hydraulic fault. Are you sure the shoes are fitted the right way round?

[rawky]

If it's a constant fault you could detach the handbrake linkage to eliminate it. Opening the bleed screw would do the same for an hydraulic fault. Are you sure the shoes are fitted the right way round?

Ok, I'll them apart today and see. I never suspected they weren't but I can't find a photo of them assembled so have nothing to compare to!

[Ethel]

The other side?

The end of the shoe that's lined should touch the drum first, going by the main direction of wheel rotation.



notice it's upside down, left side arm.

[rawky]

Thanks for that, I am doing few jobs back there, including a new radius arm pin. However I will report back on whether this helps, thanks!