Brake Piston Retractor

b422063 · Crazy Courier Joined: 14 Oct 2014 Karma :

Do these exist for motorcycles?

CaNsA · Super Spammer Joined: 02 Jan 2008 Karma :

Brake piston puller?

https://www.amazon.co.uk/Laser-3673-Motorcycle-Piston-Removal/dp/B002ZXL78Y

sickpup · Old Timer Joined: 21 Apr 2004 Karma :

What exactly do you mean, a tool to remove pistons or a tool to refit them in the caliper?

b422063 · Crazy Courier Joined: 14 Oct 2014 Karma :

A tool to make pushing them back in after cleaning a little easier. My tool for my car pulls and pushes the piston in and out the caliper, but the piston itself screws into the caliper.

CaNsA, I'll have a look and see if that is what I'm after.

sickpup · Old Timer Joined: 21 Apr 2004 Karma :

Your thumb, if you need anything else they need further cleaning.

b422063 · Crazy Courier Joined: 14 Oct 2014 Karma :

MarkJ · World Chat Champion Joined: 11 Apr 2006 Karma :

Did you clean all the corrosion out from behind the dust seals? I cleaned my calipers once but didn't get all the grub out from behind there, just most of it, and the pistons wouldn't push past the dust seals as they were still sitting too proud. Cleaned again and popped in easy Thumbs Up

el_oso · World Chat Champion Joined: 17 May 2008 Karma :

it's inside the grooves where the seals sit that need cleaning.

If they are clean then you're porbably not pushing them in straight
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Rogerborg · nimbA Joined: 26 Oct 2010 Karma :

+1 for thumbs. Clean pistons and ensure there's a sufficient air gap in the M/C reservoir, or do it with the cover loose and sufficient towelling catch any ejaculations.
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barrkel · World Chat Champion Joined: 30 Jul 2012 Karma :

This is the kind of tool you're looking for: https://www.amazon.co.uk/Sealey-AK7112-Disc-Brake-Spreader/dp/B000RO3QQY/ref=pd_sxp_grid_pt_1_2

You shouldn't be having a super hard time getting them to move with fingers / thumbs though. I only use the above when I have no time to get deeper into things, and I don't use too much force.

For example, there is zero probability of me draining the brake fluid from my VFR's calipers to clean behind seals, because the linked ABS brake system is very tedious to bleed. If those brakes lose feel or stick, it's going to a dealer.
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