Rear Brake Issue

[alanfavell]

9er ABS

 

Rear brake issue....

 

Your ideas gentlemen...

 

The story....

 

Changing tyres I noticed that the rear pads were worn to 1mm friction material  - got some in stock so I'll just change them - No I won't ........ the rear piston refused to push back by thumb pressure (never not done so B4).  G clamp - - no, not moving.

Released the banjo on the calliper and piston pushed back with easy thumb pressure - as it should.

Tighten the banjo and pump out piston 10mm = piston moves smoothly but pedal is a bit stiff to move. Release banjo and push piston back easily, pump pedal and it moves correctly while banjo released and returns to stiff resistance when banjo tightened.... WTF?

 

Master cylinder?

Rear lines shot (originals)?

ABS fekked? (Don't think so as front OK AFAIK)

 

What ideas have you  - not including Ladyboys (9er init).