bleeding 6 pot tokico's

[Paul the 6th]

2 hours I've been soaking my hands in brake fluid & still the brake lever is coming to within an inch of the bar/air is teasing me by coming out in hundreds of bubbles & then none at all for 5 minutes...

I've had the calipers to bits, pistons out & cleaned, new fluid & dust seals, new rings between the caliper halves, everything tightened up as per manual torque settings, fitted back on the bike, banjo's tightended up to correct torque...

I've got a bit of clear tubing over the bleed nipples so I can see the fluid & air bubbles coming out. Every so often the bubbles stop appearing in the fluid so I nip the bleed nipples finger tight, pump the lever quickly a few times & it gains a bit of back pressure. If i then let go and pull it once, it's back to being rubbish again.

Am I doing something wrong?

[Wideboy]

are they braided lines? or standard with a Y in the middle?

if they have a Y and your bleeding individually start with the one furthest away from the handle.

when i done the gsxr front end it took me about an hour to pump it through

also depends on what bleeder you have, i find the automatic ones that circulate back to the top are quicker

edit: oh and before you nip up the nipples pump the leaver and hold it in whilst you tighten the nipple

[Paul the 6th]

It's standard lines with one line going to offside caliper, then from offside over the mudguard to nearside. Started with nearside, then swapped to offside, then back to nearside, then back on offside and about to go back to nearside...

I've used nearly a litre of brake fluid and lever is still no where near = that CANNOT be right..

[Wideboy]

you sure you aint just ****ed them up?

[Paul the 6th]

oh yeah i almost forgot to tell ya gav, f*** off

bolt the bleed nipples up and sit on the bike with rez cap off, hold the leaver in and shake the bike, then when no more bubbles appear in the rez, try and re-bleed, if loads of bubbles are still coming through the tube then you more than likley leaking air in some where
literally took me 15 min to do my brakes on the sv this way but had braided hoses

[Paul the 6th]

yeah I've been waiting on YC to sort out braided lines...

Already tapped the calipers with a wooden mallet as suggests by a few guys on gixerjunkies.

Been at it for nearly 3 hours now, gonna stick it in the garage for the night with lever tied back.

If i don't murder anyone with pure rage in the meantime, I'll report back tomorrow...

Read your post on JG...i think giving the bike a shake/ tilt might help as there could be bubbles stuck in the top banjo just after the mc which might not be shifting ??

[Paul the 6th]

ironically enough I've bought a brembo master cylinder off a guy on GJ - it's got a bleed nipple on it but the stock one doesn't grrrr

Will drop bike off paddock stand and give it a shot before packing up for the night and getting p*ssed

[Dave20046]

Is there a bike between the reservoir and the mastercylinder? If so you'll need to squeeze that bike every so often. Worth leaning the bike over so the masterclinder is the highest point and giving a go like that for a bit, also tap your lines. Make sure all the banjos are torqued up.


Squeeze open/close release etc.