Simondo
Superbike Rider
Posts: 4,305
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Post by Simondo on May 19, 2015 11:40:53 GMT
Hi all,
Having a bit of difficulty bleeding my brakes through on my ZZR, they're 4 pot tokiko's
It doesn't seem to matter how much fluid I'm pumping through, they still lack initial bite, and no more air is coming out
When they've been left for a bit the lever will go all the way back to the handlebars but pump the lever a few times and it goes solid
Any suggestions?
Theres no leaks anywhere, the braided hoses are brand new, the seals are new and the pistons are spotless.
Thanks in advance!
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Deleted
Deleted Member
Posts: 0
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Post by Deleted on May 19, 2015 13:09:01 GMT
If it ain't air ingress, it can only be master cylinder or slave cylinder seal leakage or crap on the slave cylinder pistons stopping free movement of the slave cylinder on the hydraulic side . Go for the cheapest option first and clean any crap out of the slave cylinder. The only other thing I can think of is, are you using the recommended hydraulic fluid ? Apart from the hydraulic system the calipers could be full of shite also or corroded again preventing free movement.
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nigec
Teesside Biker
Posts: 20 
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Post by nigec on May 19, 2015 13:43:27 GMT
I had a Z650 that was a total bitch to bleed, with that it was air in the linking pipe, my FZR EXUP I had to have the callipers level as it seemed to trap air in the top corner, that was 4 pot callipers
A trick with link pipes is to cable tie the lever to the bar over night and the air leaks back but its at your own risk
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Post by ZX6-Chris on May 19, 2015 14:08:00 GMT
I had a Z650 that was a total bitch to bleed, with that it was air in the linking pipe, my FZR EXUP I had to have the callipers level as it seemed to trap air in the top corner, that was 4 pot callipers A trick with link pipes is to cable tie the lever to the bar over night and the air leaks back but its at your own risk I recently did a full drain and clean on my ZX6, was a pain and took god knows how long to bleed them. i just kept pimping the breaks. which reminds me i would like to buy a proper bleeding kit. |
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David
Superbike Rider
Bob's Bike
Posts: 3,824
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Post by David on May 19, 2015 15:09:33 GMT
Remove the calipers & push the pistons back fully, then place a piece of wood between the pistons to prevent them moving. I believe that air can get trapped within the caliper itself, using the above method reduces the chances of this occurring. Have used a Brake Bleeding Kit with a one way valve to good effect. |
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muzzasv
Superbike Rider
Traction control? This is my traction control mate!
Posts: 4,910
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Post by muzzasv on May 19, 2015 18:27:28 GMT
crack the banjo bolt off on the master cylinder, it will be air trapped there, sp1 and TL clutches are known for this too
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Mainjetmike
Superbike Rider
There is only one 46 !
Posts: 2,946
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Post by Mainjetmike on May 19, 2015 23:01:01 GMT
Old school trick .
You need a long length of rubber hose ( clear is best so you can watch bubbles if that's what you like - I do ). fit it to one of the bleed nipples , open nipple ( with a correct fitting spanner not electricians or plumbers pliers ) and have the other end of the hose higher than the master cylinder ( this is the secret ).
Leave the top off the master cylinder ( with plenty of oil in ) .
Pull brake lever back to handle bar and tape it in the fully pulled position .
Leave it over night and go to bed .
In the morning tighten bleed nipple and all air should be out .
Repeat with other side .
It's the length of the hose that helps ( as all things ) .
If your in doubt I'll pop over sometime . The mighty ninja has a front end that Vale would be proud of .
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Mainjetmike
Superbike Rider
There is only one 46 !
Posts: 2,946
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Post by Mainjetmike on May 19, 2015 23:02:58 GMT
crack the banjo bolt off on the master cylinder, it will be air trapped there, sp1 and TL clutches are known for this too You love playing your banjo I've heard . |
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muzzasv
Superbike Rider
Traction control? This is my traction control mate!
Posts: 4,910
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Post by muzzasv on May 20, 2015 6:33:45 GMT
crack the banjo bolt off on the master cylinder, it will be air trapped there, sp1 and TL clutches are known for this too You love playing your banjo I've heard . who doesnt lol |
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David
Superbike Rider
Bob's Bike
Posts: 3,824
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Post by David on May 20, 2015 7:07:42 GMT
The mighty ninja has a front end that Vale would be proud of. Rossi was showing off his front end to everyone last week & it was really firm. |
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Simondo
Superbike Rider
Posts: 4,305
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Post by Simondo on May 20, 2015 17:28:28 GMT
I'll give that a go mike cheers
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Bigred
Kneedown Superstar
Posts: 448
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Post by Bigred on May 20, 2015 22:40:18 GMT
crack the banjo bolt off on the master cylinder, it will be air trapped there, sp1 and TL clutches are known for this too Yep, I have had to do this a number of times to get the brakes fully bled. Just wrap kitchen towel around the hose and banjo bolt, undo the banjo bolt half a turn or so and then pull in the lever, then retighten the banjo. Do this four or five times and normally that fettles it. Make sure you catch the brake fluid in the kitchen towel though. |
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alboo
Teesside Biker
Posts: 6
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Post by alboo on Jun 5, 2015 12:51:52 GMT
I know this is a bit late but might help others I had a zzr600 and now have a Suzuki with the anty dive connected to the brakes the simple solution is to buy,borrow a vacume pump (aprox 40 quid ) I use the type that's designed for removing sump oil.I made a piece of plastic tube that connects the bleed nipple to the pump inlet fill the reservoir connect to the bleed nipple pump the vacume and slowly open the nipple you will see the air and fluid pass through the tube KEEP YOUR EYE ON THE RESERVOIR close the nipple and check works every time even bleeding through the anty dive.hope this helps.Alboo
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