Xs750 Rear brake jamming

Posted July 25, 200717 yr

Hi,

Can anyone tell me why my rear brakes are jamming up. The brakes work fine for several presses, but they slowly jam against the disc. The pedal travel is reduced and the pads seem to stay closed against the disc, not returning to there proper position. Which is causing the disc to overheat. Is it the master cylinder at fault or the rear brake calipar. Here in Australia, xs750 parts are around, but are extremly dear to buy.

If I open the bleed nipple, the brakes return to normal, but slowly jam up again.

Will putting a kit in either stop the problem. Would anyone know which is causing the problem - Master cylinder or the brake calipar.

I would be most gratefull for any help.

John

Australia.

Bike - 1976 XS750D

Hi Again,

Solved the problem. Rear calipar piston covered in old sticky brake fluid (Like glue). when brake was applied, the piston would move out, but was jammimg at a certain stage and wouldn't return back. Cleaned piston and inside calipar housing with a light coat of thinners and used a pencil grinder fitted with a nylon brush. Brakes are now working perfect.

John

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drewpy

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July 25, 200717 yr

Moderator

Hi,
Can anyone tell me why my rear brakes are jamming up. The brakes work fine for several presses, but they slowly jam against the disc. The pedal travel is reduced and the pads seem to stay closed against the disc, not returning to there proper position. Which is causing the disc to overheat. Is it the master cylinder at fault or the rear brake calipar. Here in Australia, xs750 parts are around, but are extremly dear to buy.
If I open the bleed nipple, the brakes return to normal, but slowly jam up again.
Will putting a kit in either stop the problem. Would anyone know which is causing the problem - Master cylinder or the brake calipar.
I would be most gratefull for any help.
John
Australia.

Bike - 1976 XS750D

sounds like your splurge hole is blocked in your master cylinder

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July 29, 200717 yr

May also be a collapsed brake hose. Had one give out on me last week in my minivan. Same symptoms. Crack the banjo nut at the master cylinder and see if the caliper releases.

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