RTF ...Brake bleeding 101
OK guys seein as this is comin up too often.....here's a few tricks
The vacuum thingos are OK but I have one and don't use it.....not worth setting it up..
Before ya start crack the bleeder nipple with a ring spanner or socket ..... DO NOT use an open ended spanner...
Place the spanner on the nut and then put a length of hose over the nipple...I prefer clear hose and battery overflow hose works well.
Turn the handlebars to the left so the master cylinder is high.....it may be nesc to undo the master cyl a touch and move it around so that it is close to level fore and aft and the lever side needs to be higher than the outlet....
Take the cap off the master cylinder
If you are just changing fluid then pull the lever in slowly (if ya do it quickly it will squirt upwards...and wrap some rags oveer everything close while ya at it)
crack the the bleeder nipple slightly and pull the lever all the way in..
Nip the bleeder up BEFORE ya release the lever or ya just got air in there.
repeat untill the master cyl is ALMOST empty.....
then get a rag and clean the master cyl out...spotless....
pour in some new fluid and repeat the bleed...untill new fluid is coming out of the other end...you will have to top up the master cyl a few times..
Now if eveerything goes well...tighten the nipple up and check ya got good lever..and ya should be fine..
If you replace the line or get air in the system then this is where the position of the master cyl comes in handy...
set up the bleeder nipple and hose and spanner like I said to start with and fill the master cyl with new fluid
as you pull the lever in slowly it will close off the bleed port and then start to compress the fluid in the line...
if you have air in the line then "tickle" the lever lightly between these two points... you wil see air bubbles come out....
Keep ticklin and alternately pulling the lever in all the way and cracking the bleed nipple as in the first stage....ya want about half a dozen tickles for each couple of full throws....
As you start to get a bit of lever but still have air... tap the line all the way up it as you tickle the lever....the cross over piece under the bottom tree is a real pain if ya got dual discs...
Keep repeating untill ya got it....as it takes a bit of feel
I can do a fluid change in about 10 minutes...so it just takes practice
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Havin a few beers in the shed with my mates.
Last edited by stevo; 27th March 2005 at 04:37.
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