Can anyone give me some advice on how to get the calliper pistons out?............i can get then spinning, but they wont come out!!
I have tried using compressed air, without success.

Also, what thread type and size is the bleed nipple and brake pipe connection? I am hoping to run a tap through them to clean them.

Any help appreciated.

spray with WD-40, push the pistons in as far as they will go, i use a g-clamp, then lever them out 5-10mm using 2 flat head screw drivers or similar. repeat a few times until they are freed up enough to lever out all the way.

ive never had any luck with compressed air either.

EDIT : http://www.brakesint.co.uk/enterflash.html - if you need seals they are about £5 a caliper from here.

[Edited on 8/3/04 by Cousin Cleotis]

Cheers, will give it a try.

WD-40 is definitly the trick. Took a few minutes soak and out they came. Had already spent about 1 hour witht he air

Bleed nipple and brake pipe conn are 10mm x1mm...
cheers

I tried the suggestions posted above, but they refused to budge.

I eventually got them out by taking the servo/master cylinder that i stripped off the donor and coupling it up directly to the callipers, then hand operated the push rod until the pistons popped out.

A bit time consuming and fiddly, but at least they are out now and cleaned up. Just needing new seals etc - where is cheapest for the seal kits????

Thanks for the thread details, i had to bore out one of the bleed nipples and then clean the thread with a tap.

The joys of brakes...........

[Edited on 9/3/04 by albertz]

Try your local spares shop for all cortina parts.They are now old stock at the suppliers and are rediculously cheap.
that includes all brake parts,cables,electrics,and just about anything else you can think of.

Try Brakes International www.brakesint.co.uk

or

LSUK, used to be Lucas. Lucas part no SP2589. I paid £10 + VAT IIRC

Mick

I have just had to refurb the seals in my Sierra Callipers. Went to local motor factors place...
The guy there was sound and after some quick maths it turned out as cheap to but new callipers, £10+vat back on the old ones too!!!!
hmmmm, nice.

Does the place that had the cheap Seara calliper also do cheap Cortena callipers. Falling that can you fit sera or other callipers to the Cortina upright.

What are the best prices that people have seen on Cotena callipers

Blake

Cortina Calipers, £32 each from my local Motor Factor. I think that is an average price. M16's are very common as they are still used in industrial applications. They seem to be much more expensive from "specialists".

By the way, if you screw a bleed nipple into the brake pipe hole and attach a foot pump to this, you can usually pump the pistons out.

Oh, and new ones look nice too.
Rescued attachment P1010009.JPG

Does any one know what a good price for a hub is?

Safety note NEVER use compressed air to get the pistons out -- VERY VERY dangerous.

Press the pistons out using hydraulic pressure.

You could have somebodies eye out!

A bit more than that an eye out -- a lot of stored energy in a compressed gas, the speed impact of the piston at very close range would be comparable with a rubber bullet but it ain't made of rubber..

With hydraulic pressure there is almost no stored energy this piston might travel a couple of mm at most.