rear brakes & winding the piston back in

[charlie_pank]

I've got a caliper on the bench right now. I see that the piston screws down on a central dowel when you wind it in. Presumably that central dowel is pushed by the handbrake, so what happens when you have wound it all the way in, and then your pad wears down, how does it work its way back out along the thread of the dowel so that it is ready to be wound back in again when you replace the pad?

[simonpa]

You need a caliper rewind tool - for a Sierra.

Laser do a multi-car one that works a treat :)

 

This sort of thing here

 

Probably cheaper on the 'bay...

 

Cheers - Simon

 

[elan_fan]

There is a nifty little mechanism inside with a cam and a clutch so that long pulls on the handbrake arm wind the mechanism out to take up the slack. The clutch part is there to prevent excessive adjustment i.e. giving you no free movement on the handbrake. you can simulate this on your caliper by winding the piston in with the tool and then operating the handbrake lever with a spanner and you will see the adjustment in the last bit of the lever movement.

 

regards

Mark

[charlie_pank]

Thanks Mark.

 

Simon, thanks, I know how to wind it in. I use a slightly ground-down angle grinder disc-key to do it, rather than forking out for a special tool!