Rear Brake Caliper Problem

[BBB61]

I have just given my beastie a 6000 mile service. In addition to the normal routine, I also stripped the rear caliper down, replaced the piston seals, cleaned it and reassembled it. I was hoping this would cure the slight sticking problem I was experiencing. Unfortunately, it does not appear to have sorted it out. I rode the bike to work this morning, and on checking the temperature of the rear disc, it was very hot. By comparison, the front discs were barely warm.

Does anyone have any ideas? The pads are newish, having covered about 1500 miles. They are EBC. I have a half worn set of pads sitting around and I was wondering if it was worthwhile putting these in to see if they make any difference.

Cheers,

Bob

 

[boxer]

Make sure the pin has no wear groves and that the channel the non pin end of the pad slides in is clean and has no built up grime.

Chamfer both sides of each pin hole to reduce the area of material touching the pin.

Russ.

 

[Rob Farmer]

Bob,

EBC originally made the rear brake pads with both pads the same thickness, this is wrong and you should have one pad thicker than the other, I believe they stopped producing them for a while and now produce them with one thicker than the other. It sounds as though you have the old style ones where they are both the same thickness.

When I first fitted EBC HH pads to my 1100 I had a similar problem, took them back only to find they had stopped production because of the size problem.

For what it takes I'd put the worn ones back in and see if the problem qoes away.

 

[BBB61]

Russ and Rob,

Thanks for the replies. The pin was only replaced a year ago, but it will do no harm to give that a clean as suggested. I will swap the pads over to see if that eradicates the problem as well.

Cheers,

Bob

 

[iletts]

Bob,

I don't think you have a problem, I get exactly the same symptoms, but still get 10-12k out of the pads. The rear calipers are floating, therefore there is nothing to retract the non-piston side, unlike the front. That is why one pad is thicker, cos it wears more.

Ian

 

[Sergeant Pluck]

Also - and I now it sounds stoopid - but do you wear motocross style boots? I do, and I found that on my other bike, I was dragging the rear brake ever-so slightly because I couldn't feel the lever thru the soles. Not enough to effect the handling at all - but it was happening just the same. I only found out when someone was following me and asked why I kept the brakes on!! I don't do it on the GS as I sit differently but it's worth a thought...

 

[BBB61]

I don't wear motocross boots, but I do take a size 13!! But I do make sure I keep my foot away from the brake pedal when I am riding (apart from when I need to use the brake of course). It will be worth comparing the thickness of the current pads as its possible I might have got a set of the old spec EBC pads.

Bob

 

[Septic]

bob

Check the rear master cylender.
there is a adjustable rod that goes into just see if
it needs a tweek.

stevie