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WILLYBUELL
PostPosted: 27 Mar 2012 22:05 
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Think Pink
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just done complete overhaul of a front caliper ,lever travels about 25 MM then to get solid feel to it ,1/2 inch m/s ,my bleed proceduer ,pistons fully in ,kept in by strong foam ,brake line purged from the nipple to m/s of air ,nipple locked off ,pads int caliper now pumped out to disc ,lever tie wraped to handel bars closeing circit and pressure gently bleed out from nipple then locked off ,pistons now pushed fully in starting with the small lower pair first then center pair & finnaly the upper large pair thus purgeing, HOPEFULLY any sticking bubbles up through the transfer galleries and out the bleed nipple lock off , release lever ,pump out pistons and repeet ,still have about 25 mm of travel to a solid feel , HMMMMMMMMMMMM ,is this kind of travel the norm

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pash
PostPosted: 27 Mar 2012 22:24 
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If you are questioning it, I would say no, it is not normal, it should be as firm as your XB lever. I reckon there is still air in there...

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Maz
PostPosted: 27 Mar 2012 22:25 
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:yt:

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pash
PostPosted: 27 Mar 2012 22:28 
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Cable tie the lever tight to the handle bar and leave it overnight, then in the morning cut the cable tie and pump the lever.

I thought it was an old wives tail, but I have had success with it.

I reckon the air bubbles get smaller with the pressure and find their way to the top easier...

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WILLYBUELL
PostPosted: 27 Mar 2012 23:14 
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Think Pink
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pash wrote:
Cable tie the lever tight to the handle bar and leave it overnight, then in the morning cut the cable tie and pump the lever.

I thought it was an old wives tail, but I have had success with it.

I reckon the air bubbles get smaller with the pressure and find their way to the top easier...

cheers doc ,recon smaller bubbles have less chance of sticking int system dude ,wonderd if the pistons were slightly larger int early caliphers and with 1/2 bore M/S displacment ratios would be differnt giveing a slightly longer travel ,tie wrap it is DUUUUDE :yup: :D :D

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pash
PostPosted: 27 Mar 2012 23:17 
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Was the system fully empty when you filled it? If you are using DOT 5 you can get water collecting at the bottom which may never come out cos it doesn't mix with the fluid
If you are 3, 4 or 5.1 you should be ok for the water...

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Maz
PostPosted: 27 Mar 2012 23:24 
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Dont start me off on the DOT 5 thing again :x

......as the caliper has been overhauled Pash, I'm guessing all the old fluid has been disposed of lOl

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WILLYBUELL
PostPosted: 27 Mar 2012 23:25 
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just done complete overhaul of a front caliper yep pistons out cleaned lubed and refitted ,hence haveing purged the line and m/s of air ,then the pistons ,starting at the smaller lower ones working :yup: up

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pash
PostPosted: 27 Mar 2012 23:27 
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I am interested to know what overhauling took place...

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WILLYBUELL
PostPosted: 27 Mar 2012 23:27 
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aaa yes ,NO rust on the pistons & complete refill with new fluid , :yup:

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pash
PostPosted: 27 Mar 2012 23:28 
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:D

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WILLYBUELL
PostPosted: 27 Mar 2012 23:31 
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Maz wrote:
Dont start me off on the DOT 5 thing again :x

......as the caliper has been overhauled Pash, I'm guessing all the old fluid has been disposed of lOl

dont think about DOT 5 tonight ,you need your rest ,reeesr reeeeeest :yup: :D :D

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WILLYBUELL
PostPosted: 28 Mar 2012 19:39 
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tie wrap trik BOB ON DOC ,tie wrap off coupleo pumps, ard, ROCK ARD SOOOOOOORTED yeeeeeeeeee haaaaaaaa :D :D aaaaaa

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IF IT BLEEDS WE CAN KILL IT ,THIS STUFF WILL MAKE YOU A GODDAM SEXUAL TYRANASURUS ,YOUVE BEEN PUSHING TOO MANY PENCILS DILLON .GET TO THE CHOPPER


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