Home made brake Caliper tool.

[smoggyrich]

Doing the Brakes soon on my car so I've knocked up a caliper piston retractor...

Just need to weld the fixed nut and the guide/slide in place.

I'll let you know if it works

 

[Nomolos]

Don’t know what this is for but some callipers need the pistons to be wound back in and not just pushed if that makes sense if you push a wind back piston in you can damage the seals, the piston normally has little pits to engage the tool correctly to allow the twist action required

 

[cobcorsa]

Don’t know what this is for but some callipers need the pistons to be wound back in and not just pushed if that makes sense if you push a wind back piston in you can damage the seals, the piston normally has little pits to engage the tool correctly to allow the twist action required

hmmmm that might explain why brake fluid leaked when i pushed back the piston in the gf's punto, oops

 

[beebee]

Don’t know what this is for but some callipers need the pistons to be wound back in and not just pushed if that makes sense if you push a wind back piston in you can damage the seals, the piston normally has little pits to engage the tool correctly to allow the twist action required

They usually need to be wound in when the handbrake also operates on the caliper, normally the rear calipers on most cars.
As for the front ones, i just push the pistons back in with a G clamp !

 

[smoggyrich]

Don’t know what this is for but some callipers need the pistons to be wound back in and not just pushed if that makes sense if you push a wind back piston in you can damage the seals, the piston normally has little pits to engage the tool correctly to allow the twist action required

You are thinking about the rear brakes with the hand brake mechanism. My tool is for the front brakes which simply pushes the pistons back into the caliper to allow new pads.

The tool for the rear brake looks like this...

 

[Robotstar5]

I just use a G clamp but do open the bleed nipple to stop fluid being pushed back to reservoir as I have had conflicting advise about possible damage to ABS?

 

[Wallace]

The tool for the rear brake looks like this...

Some vehicles you need a left and right hand threaded version of this tool.

 

[octo0072000]

I just use a G clamp but do open the bleed nipple to stop fluid being pushed back to reservoir as I have had conflicting advise about possible damage to ABS?

as said
best to clamp the pipe and open bleed nipple i know Mitsubishi
shogun /pajero it upsets the ABS pump can turn the lip seals so if in doubt clamp it and open bleed nipple

 

[Robotstar5]

as said
best to clamp the pipe and open bleed nipple i know Mitsubishi
shogun /pajero it upsets the ABS pump can turn the lip seals so if in doubt clamp it and open bleed nipple

Unless you've got braided hoses like mine

 

[octo0072000]

hoses

Unless you've got braided hoses like mine

you will just have to open the bleed nipple then and bleed the brakes after changing the pads

but as braided hoses are still a flexible hose it should clamp anyway
but be gentile

 

[hareng]

Been using a two legged bearing puller with the arms removed for decades, even works where have to wind the calipers in back and front as on VW, Audi, Vauxhall.

 

[smoggyrich]

Well I have done my front brakes and my tool worked a treat.

I was just going to buy a rewind tool off ebay for my rear brakes, but then i thought, where's the fun in that?

So......

I can screw back 2 of the 6mm allen bolts depending on which pitch I require.

I think this should do the job.

 

[octo0072000]

very neat

 

[FranV8]

Top job!

 

[Roadkilluk]

I can't find mine atm, but it's basically an 'I' shape.

The top of the I is the handle and the bottom of the I goes in the 'cutouts' on the caliper piston, twist and push, don't forget to unscrew the bleed nipple first

 

[jonnyBMX]

i just use a good old pair of plumb pliers