Brake Calipers

Anything you like about motorbikes
User avatar
Skub
Posts: 11868
Joined: Mon Mar 16, 2020 5:32 pm
Location: Norn Iron
Has thanked: 9688 times
Been thanked: 9704 times

Re: Brake Calipers

Post by Skub »

DefTrap wrote: Sun Mar 14, 2021 9:54 am
I normally prime the system by sucking with me big ol' lungs....
Those years in Thailand paid off,eh? :shock: :lol:
"Be kind to past versions of yourself that didn't know what you know now."
Walt Whitman
https://soundcloud.com/skub1955
User avatar
Noggin
Posts: 7684
Joined: Thu Mar 19, 2020 1:46 pm
Location: Ski Resort
Has thanked: 16267 times
Been thanked: 3747 times

Re: Brake Calipers

Post by Noggin »

Mussels wrote: Sun Mar 14, 2021 11:57 am I had a badly seized set of calipers on my Thundercat so I stripped them and replaced the seals. It was a long time ago but I don't remember the seals costing a significant amount so that looks a bit pricey. The seals I took off were still in good condition so it may be worth having a look before spending that much.
The job was simple but getting the pistons out wasn't, it took wooden blocks and a G clamp to hold the other pistons in place while an air compressor forced a stuck one out. As long as it wasn't needed urgently it's one of those jobs that I'd do myself again.
If the pistons are difficult then I'll struggle. Don't have a workshop or workshop tools, just a toolbox and a small table in my apartment!! :O
Life is for living. Buy the shoes. Eat the cake. Ride the bikes. Just, ride the bikes!! :bblonde:
Mussels
Posts: 4385
Joined: Mon Mar 16, 2020 9:02 pm
Has thanked: 852 times
Been thanked: 1226 times

Re: Brake Calipers

Post by Mussels »

Mine were seized badly so you may not need so much power but I guess if worst comes to the worst you could post them to someone.
If they need doing anyway then what's the harm in trying?

Other people may have alternatives to a compressor or bleeding the brakes to get a piston out. Otherwise it's easily a kitchen table job.
User avatar
Noggin
Posts: 7684
Joined: Thu Mar 19, 2020 1:46 pm
Location: Ski Resort
Has thanked: 16267 times
Been thanked: 3747 times

Re: Brake Calipers

Post by Noggin »

Mussels wrote: Sun Mar 14, 2021 7:37 pm Mine were seized badly so you may not need so much power but I guess if worst comes to the worst you could post them to someone.
If they need doing anyway then what's the harm in trying?

Other people may have alternatives to a compressor or bleeding the brakes to get a piston out. Otherwise it's easily a kitchen table job.
That's kind of what I've been hoping :) Would like to try at least. Probably on the rear one first!! LOL Just to see :D
Life is for living. Buy the shoes. Eat the cake. Ride the bikes. Just, ride the bikes!! :bblonde:
User avatar
mangocrazy
Posts: 6479
Joined: Tue Dec 22, 2020 9:58 pm
Has thanked: 2322 times
Been thanked: 3374 times

Re: Brake Calipers

Post by mangocrazy »

Mussels wrote: Sun Mar 14, 2021 7:37 pm Mine were seized badly so you may not need so much power but I guess if worst comes to the worst you could post them to someone.
If they need doing anyway then what's the harm in trying?

Other people may have alternatives to a compressor or bleeding the brakes to get a piston out. Otherwise it's easily a kitchen table job.
The best way I've found to get really solidly stuck pistons out (as in 350LC calipers that had sat for 35 years untouched) was to use a grease gun with an adaptor to take a banjo bolt. You can get insanely high pressures using a grease gun, way higher than a compressor, with the added bonus that when the piston does finally pop it doesn't get fired across the room at 100mph.

It just makes a sort of wet fart sound...

But on the downside, you do have to clean all the grease out of the caliper.
There is no cloud, just somebody else's computer.