Cleaned my brake calipers front and back,now having problems bleeding them,any advice greatly appreciated ta john
What problem exactly bleeding them?
Won't seem to bleed, no fluid coming through tube , still no pressure in brakes
Depends on how they have been looked after in the past, but the tiny hole at the bottom of the bleed nipple can get blocked with crud. Take out the nipple and see if you can blow through it
Did you drain them completely or did you try and flush them through?
A couple of things to try...
Reverse bleeding. Force the fluid in the bleed nipple on the caliper up to the reservoir.
Suction bleed. Use a mityvac (spelling? ) to pull the fluid down the pipe from the reservoir.
Pressure bleeding. And old reservoir cap, a schrader valve and a bike pump pressurise the fluid down the pipes.
I've tried them all with various degrees of success. Sometimes simply waggling the lever a few mm to prime it up before a full squeeze helps too.
as you are having problems front and rear its unlikely there is a bike fault as they are independent systems, forgive me but have you bled bike brakes before, the first time I did mine and I had been doing car brakes for years I had similar problems, its a different process on bikes, its not the couple of pumps and let the air out like a car, its a continual pumping for ages with the nipple open but linked to a jar with fluid
Thanks guys will get back to yous, plenty of options to try ta
Quote from: Burchy on February 07, 2015, 07:42:36 PM
Depends on how they have been looked after in the past, but the tiny hole at the bottom of the bleed nipple can get blocked with crud. Take out the nipple and see if you can blow through it
Oh so many ways to respond to this... :mfr_lol: still :mfr_lol: I needed that shot of humour.
Guys, see the front master cylender, the black rubber inside it is it supposed to be full of brake fluid or is that dry and the outside of it full ta
do you mean in the reservoir?
if you do then that needs to come out first and the fluid goes underneath.
So there's no fluid inside that black bath ta
no. if it's what i think you mean (difficult without pictures).
I am describing the big rubbery thing that sits under the reservoir cap. it will pull out. if you are putting fluid on top of it, none will be entering the brake system at all.
pull it out and sort of flatten it back to shape. fill the reservoir up and try bleeding again.
if possible post a picture here so i am confident i am giving you the correct info.
I wish I could help but I am struggling to understand his posts .
if you don't know exactly where you put the brake fluid you probably are not the best person to be working on your life saving braking system , id take it in somewhere .
I can see this is all gonna end in tears when he cant stop!
Where's the disclaimer...... :mfr_lol:
We need photos to appreciate which parts you are specifically referring to.
I am more than slightly worried.
Bleeding hell , I nearly spilled me fluids reading this post , defo give it to the bike shop ,they will do it in a hour, if you are not sure what to do a big super bikes brakes are not ones to learn on , :gun_bandana:
I let BK change the oil in my clutch and brakes.. No way will I have a go at this. :no:
Quote from: exBanditOwner on February 09, 2015, 01:22:15 PM
no. if it's what i think you mean (difficult without pictures).
I am describing the big rubbery thing that sits under the reservoir cap. it will pull out. if you are putting fluid on top of it, none will be entering the brake system at all.
pull it out and sort of flatten it back to shape. fill the reservoir up and try bleeding again.
if possible post a picture here so i am confident i am giving you the correct info.
that sounds like a rubber dust/air seal under the screw on cap - need to lift that to put the fluid in :)
Quote from: PCPeteUK on February 09, 2015, 05:16:00 PM
that sounds like a rubber dust/air seal under the screw on cap - need to lift that to put the fluid in :)
:agree:
If he's putting it on here the dust/air seal he's got a couple of mil of fluid :censored:
Quote from: Débs on February 09, 2015, 04:22:29 PM
I let BK change the oil in my clutch and brakes.. No way will I have a go at this. :no:
neither do i.with brake's they've got to be right.i often start a job & wish i hadn't !!!!!!!! i leave it for the dealer to do.piece of mind....
Quote from: tapps on February 09, 2015, 06:41:49 PM
neither do i.with brake's they've got to be right.i often start a job & wish i hadn't !!!!!!!! i leave it for the dealer to do.piece of mind....
that's why i do them myself!!!!!
Quote from: exBanditOwner on February 09, 2015, 06:54:24 PM
that's why i do them myself!!!!!
But if something goes wrong and you have an accident, you only have yourself to blame.. Cost of repairs etc... :wacko:
But by having a dealer do it, anything goes wrong it's down to them and off to court to sue them if I'm still alive.. :mfr_lol:
i trust myself
Changing hydraulic fluid isn't really difficult. You just have to be tidy and careful and do it sensibly
A newbie came on the zzr forum im on ( usa ) asking how to change his spark plugs, a few guys tried to help him . His posts became more and more worrying, he asked where his spark plugs were and what they looked like. Some member advised him that if he followed his HT leads towards the engine he would find them, after his final post entitled " what is an HT lead ? " the helpful members caved in,
" Dude ! if you don't fricking know what a frickin HT lead is, are you the best person to be frickin messin with your bike? really!"
another newbie came on stating that his mate had advised him to change his engine oil and then flush the old oil out , run it for 10 mins, reflush and refill with new oil, he told us that he had put the garden hose on full water into his crankcase and for some reason the engine had seized!
It's okay got you now no probs ta :cool:
they walk among us.
this thread has stayed on topic far too long. so...
anyone know of some good tyres to get?
Quote from: Mr wallace on February 09, 2015, 11:53:40 PM
It's okay got you now no probs ta :cool:
glad to hear you are sorted.
give the brakes a few squeezes at very slow speed before you hurtle off down the road eh.
Thanks for all replies guys very much appreciated, one other thing, what is best brake fluid to use :tank:
Any motorcycle brake fluid from a shop, brake fluid is brake fluid, unless your racing.
Just make sure its Dot 4 not Dot 5
You can use Dot 5 BUT you will need to completely strip the system and thoroughly wash away any trace of Dot 4
Ta for ur help :cool: