I agree "Alfapat".
I too, would like some help servicing my rear (and front) calipers. I had my rear ones exchanged a few years ago (stuck calipers) , due too poor service at the garage. Thats why i would like to service it myself. But i think i need instructions for this.
So to you skilled guys: Give us some basic instructions to do this, please.
Similar problem on my 2.0 TS 16V at the 62K Service. It would have been new calipers but the Mechanic took off the two rods on which the caliper slides when the brakes are applied and had a little engineering firm fabricate some new ones which he then fitted. (It was these rods which had seized due to corrosion). If you can't find someone to do this or you haven't the inclination, phone Mangoletsi of Cheshire for cut-price parts. Good luck!
First of all you goto Halfords... Yes.. i said Halfords. You purchase a brake windback tool (i think that's what it's called) It's about a tenner.
Take of the rear wheel (well duh!)
Undo the bolts holding the caliper in place and take out the pads.
All you now do is pump the brake until the piston moves out a bit.. making sure you don't go too far and pop the piston out. Put the windback tool inplace and wind the piston all the way back into the chamber.
You need that windback tool as the piston is usually what seizes.
Do this approx 5 times. And you'll notice that it's a lot free-er than it was.
Lift the edge of the rubber boot off the piston - but not off the chamber housing and put a little copper-eaze greaze inside the boot.
Repeast the 'piston pumping' procedure another 4 or 5 times to help the grease to work in and that should be all.
This'll free the rear brakes up a treat.
I've just done it to a mates 156, and i'm doing it soon on my 155... bloody rear brakes have been squeeking and not working 100% for months now... now it's finally getting sorted.
I hope all that helps... i may be going on about sommit altogether differant
If the 156 calipers are different to the 155 then I don't know how much use this is going to be. I've just done the rear brake with the help of Jason77. Yes the car is still under warrantee but unfortunately I feel the Alfa dealer round here hasn't improved plus I would have had to put the cat back on.
Embarking on this mission to free up the rear brakes I have to thank two people my old man and x19er who with the ownership of Fiat x19's know a thing or two about Italian engineering.
I believe though I may be wrong that the early 156 were recalled with a rear brake fault. This was due to the bolts holding the rear caliper having a return springs which seized. There does seem to be any such problem on mine.
I think the reason they stick so often is that they run them with very little piston to caliper clearance, they are very much precision engineered. You will never, ever see a leaking piston seal on an Italian car unlike other makes whose pistons slap around inside the bores and **** brake fluid everywhere once they're five years old. <----- Thanks x19er
Removing the calipers and using a Caliper windback tool available form Halfords for £19.95 (which fits perfectly) follow the process Jason mentioned above. Make sure you remove the cap from the brake fluid tank to make winding back in easier. The easiest way to make sure you don't pump the caliper out too far is to measure the wear left in the rear pads. I didn't remove the rubber seal because it was too cold and I didn't beleive I would get it back in without ripping it.
This seems to have done the trick for now although the pistons are not as free as they should be so I plan on taking the pistons right out and cleaning them up during the holidays in a nice warm garage. I let you know how I get on if your interested.
Her,s how I got on with the brakes,as I was GOINGdown to Dundee ANYWAY,my local alfa specialist which isw 135 miles away,I fitted 2 s/h struts and have been waiting to get a back suspension arm on back order for 5mths. now.Make sure you get the big bolt that goes thro, the arm as they usually seize, it was my lucky day as my one came out and the one sent was for a punto,however luck did not last as the wheel bearing fell to bits --only 4mths old!Apparently its the way it comes off,and it just fell to bits.
390 later from dingbro parts supplies another was fitted.Oh yes the brakes the piston was a little stiff but the handbrake cable was holding on to the caliper as well,fitted new pads as the old ones had cooked by this time ---an expensive trip!However car going great now!!!Alfapat.