brake piston rewind tool

[Pastry]

I want to change the rear pads on my E89 but because of the electronic handbrake (poxy idea that was) you need a rewind tool for the piston? Has anyone bought a cheap one that worked on their E89 please?

 

[Smartbear]

You don't need a tool, the motor part comes off & you can wind the Pistons back manually
Rob

 

[Pastry]

You don't need a tool, the motor part comes off & you can wind the Pistons back manually
Rob

Are you sure Mr Bear, after taking the callipers of today Stu was sure you needed the tool?

 

[Smartbear]

https://youtu.be/8FaerB7OcyA

Rob

 

[cj10jeeper]

I have this one and used it on countless different brake set ups
Even those that don't need to be rotated, but just compressed are easy with it

http://www.ebay.co.uk/itm/19pc-Brak...692479?hash=item20cc02da3f:g:QkkAAOSwm8VUrv76

 

[Smartbear]

I have this one and used it on countless different brake set ups
Even those that don't need to be rotated, but just compressed are easy with it

http://www.ebay.co.uk/itm/19pc-Brak...692479?hash=item20cc02da3f:g:QkkAAOSwm8VUrv76

I believe the e89 rear calliper Pistons need winding in from the back of the calliper after the electric actuator has been removed :?
Rob

 

[Pastry]

I have this one and used it on countless different brake set ups
Even those that don't need to be rotated, but just compressed are easy with it

http://www.ebay.co.uk/itm/19pc-Brak...692479?hash=item20cc02da3f:g:QkkAAOSwm8VUrv76

I believe the e89 rear calliper Pistons need winding in from the back of the calliper after the electric actuator has been removed :?
Rob

Thanks Guys. I'll have a look at the video but either way it is still cost effective for me to change them myself, especially as the callipers are off waiting to be painted

 

[firebobby]

I use long nose pliers on the rear calipers on my MR2, just hold them against the piston and push/turn slowly. That's always worked for me.

 

[flybobbie]

I wound my brakes from behind after removing ebrake mainly because I usually strip the whole lot clean repaint etc.
Always think there is the danger of tearing the dust seal if rotated from the piston face.

 

[benv6]

I have changed my rear pads few months ago and used that same video, you can use a screwdriver but I have used the tool mentioned in this thread (ebay one) and it makes it a lot easier. the screwdriver option would take you ages to push back the piston.

 

[Nictrix]

Just to be completely clear on this for when it comes time to change ours, can you wind the piston in both ways?
Either with the e-brake part attached winding the piston or with it removed and winding from the rear?

 

[Smartbear]

Just to be completely clear on this for when it comes time to change ours, can you wind the piston in both ways?
Either with the e-brake part attached winding the piston or with it removed and winding from the rear?

I'd say yes, looks like Pastry has left the actuators attached & wound the Piston in from the front
Rob

 

[Pastry]

Just to be completely clear on this for when it comes time to change ours, can you wind the piston in both ways?
Either with the e-brake part attached winding the piston or with it removed and winding from the rear?

I'd say yes, looks like Pastry has left the actuators attached & wound the Piston in from the front
Rob

I used the method shown in the video using a large flat blade screwdriver. With hindsight I would have bought the tool as it's only a few pounds and would make the job a lot easier with much less chance of damaging something.

 

[cj10jeeper]

Just to be completely clear on this for when it comes time to change ours, can you wind the piston in both ways?
Either with the e-brake part attached winding the piston or with it removed and winding from the rear?

I'd say yes, looks like Pastry has left the actuators attached & wound the Piston in from the front
Rob

I used the method shown in the video using a large flat blade screwdriver. With hindsight I would have bought the tool as it's only a few pounds and would make the job a lot easier with much less chance of damaging something.

For this reason I always buy s tool. Used it in BMW, jeeps & Jags all with different set ups and so much better than messing with screwdrivers and g clamps

 

[R.E92]

This should be possible with ISTA-D.

I have read somewhere else that there is a software procedure for releasing the ebrake.

EDIT: Found it. It's part of ISTA-D, under Vehicle Management >> Service Functions >> Chassis and suspension >> Parking Brake >> Worshop mode > "ABL - Parking brake: Workshop mode"

I think BMW use a special tool for manually retracting it now but before that tool came along they used the above method.