156 rear calipers - Alfa Romeo Forum
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156 rear calipers

Having a hell of a time changing the rear pads, how do I get the caliper off the disc? Is there some trick to compress the piston? Do I need to do something to the hand brake adjustment?
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Re: 156 rear calipers

Hi Gillap, welcome to the AO forum.

Take a look at this thread;
http://www.alfaowner.com/Forum/showt...+rear+calipers (help with 156 brakes)
I think it should help.

You could also use the Search function at the top of the board to find other threads on this subject.

Good luck.
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Re: 156 rear calipers

To move the piston back it needs to be rotated and pushed at the same time.
There are special tools to do that but it can be done with a G-cramp and a pair of water pump pliers.
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Re: 156 rear calipers

By releasing the handbrake [ parking brake ] that should give enough *slack* to remove the caliper off the disc assuming that you have removed the bolts that secure the caliper to the rear axle in the 1st place.

Getting the caliper to retract, after taking out the old pads, is the real trick. You have to open the resevior caps to allow the fluid in the calipers to flow backwards. Also you have to rotate the caliper piston CCW or CW while pushing inwards at the same time. unlike the front calipers the rear calipers have a 2nd method of operating which is the handbrake. This has a *worm/cork-screw* drive mechanism inside the piston, thats why you have to rotate * push inwards to get the piston to retract.

be prepared to sweat
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Re: 156 rear calipers

I`ve just finshed doing all of my brakes and have taken lots of pictures.

I`ll put them all together tomorrow if I can.

In the mean-time, here are two pictures that show how to get the caliper off. Dont try to take the complete unit off the stub axle, just take 'half' of the caliper off. The sliding half. You will need a 13mm and 15mm spanner.

You need to slacken the handbrake although just taking the handbrake off may be enough. No need to take the handbrake cable off the caliper.

Yes, as others have said, you can screw the piston back in with pliers / spanners / calmps / etc but go to Halfrauds and but the tool for 20 (it will fit your car, even though it just says fords etc). It make the job a joy rather than 30 minutes of sweating and swearing - 30 if you are lucky! You will not regret it!
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Re: 156 rear calipers

Thanks guys, all done discs as well - everything that could go wrong did ...

Next week the variator!

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