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Brake Fluid
Posted: Mon Aug 03, 2015 10:01 am
by dantheram
Morning all,
how much brake fluid do i need to do a change? is it 2 litres?
Re: Brake Fluid
Posted: Mon Aug 03, 2015 11:33 am
by alexperkins
Nowhere near that
Entire system uses around .5L
A 1L bottle will be sufficient for a full bleed.
Re: Brake Fluid
Posted: Mon Aug 03, 2015 12:25 pm
by dantheram
spot on, thanks Alex
Also,
i did my brakes yesterday - pads and rotors and the passenger side caliper piston was tough to wind back - this was after i had extracted and re-lubed the slide pins.
On my drive home yesterday my passenger side brakes were extremely hot, clearly the piston is not moving back as it should
i've ordered a caliper to be safe but i was wondering if there is anything i could try to loosen up the caliper in the mean time?
PS hoping it is the just the caliper - what other things can cause this, blocked hoses maybe??
Re: Brake Fluid
Posted: Tue Aug 04, 2015 9:23 am
by alexperkins
Front or rear caliper?
Its possible theres an air lock in the caliper, or the mecahnism has seized
If its a rear caliper, its almost impossible to repair, and has to be swapped out due to the handbrake mechanism
If its a front caliper, its just a case of popping the piston out under pressure and servicing the caliper.
Re: Brake Fluid
Posted: Tue Aug 04, 2015 10:56 am
by dantheram
alexperkins wrote:Front or rear caliper?
Its possible theres an air lock in the caliper, or the mecahnism has seized
If its a rear caliper, its almost impossible to repair, and has to be swapped out due to the handbrake mechanism
If its a front caliper, its just a case of popping the piston out under pressure and servicing the caliper.
it's a front - tried bringing it right out and pushing it back in last night, went out a little too far and it's stuck now
. Going to put my spare on and possibly get my old one re-furb'd.
Re: Brake Fluid
Posted: Tue Aug 04, 2015 11:01 am
by alexperkins
Sounds like its gone off being straight which will make it almost impossible to push it back in unless its removed, and reseated
Re: Brake Fluid
Posted: Tue Aug 04, 2015 11:29 am
by dantheram
alexperkins wrote:Sounds like its gone off being straight which will make it almost impossible to push it back in unless its removed, and reseated
I initially thought this - the top slide pin had frozen and the pads were worn unevenly, did get it moving but, as i said, i pushed it out a little too much and have probably made it more off straight than it was before
Re: Brake Fluid
Posted: Tue Aug 04, 2015 11:32 am
by alexperkins
If you have a nice wide block of wood, its possible to straighten it up gently with pressure, providing you can get the caliper on a flat surface so you can applying differing pressure to each side of the piston
Re: Brake Fluid
Posted: Tue Aug 04, 2015 12:11 pm
by dantheram
alexperkins wrote:If you have a nice wide block of wood, its possible to straighten it up gently with pressure, providing you can get the caliper on a flat surface so you can applying differing pressure to each side of the piston
To be honest it needs coming out and refurbing, the gaiter / protective boot thing is 60% detached so it will just fill up with debris if i put it back on.
I'm hoping the spare i've sourced is in good nick!!!