tonytee
Parking Attendant
Posts: 20
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posted August 05, 2010 09:01 PM
help with priming brakes?
got a 04 gsxr 1000 that i pieced 2gether between a crashed bike and a drag bike with a blown motor.i cant get the master cylinder 2 push the oil threw,but when i take it off and put my finger over the hole and push the rod down it pumps air.i got 2 master cylinders and 2 brake calipers and i swaped them all out.im new to streetbikes i was always into dirtbikes but its all the same.i know on ktm dirtbikes u got to use like a suringe and like prime the cylinder. anybody got some help for me
  
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entropy
Moderator
Posts: 8671
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posted August 05, 2010 09:45 PM
TT, you might try a Mityvac, suck it into the system
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This moderator uses moderation in moderation
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dubious
Needs a life
Needs more time to ride!
Posts: 8442
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posted August 06, 2010 07:24 AM
 Edited By: dubious on 6 Aug 2010 15:25
mighty vac for sure, work both ends
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natural selection.....
destiny will overcome intervention.
Some are not worthy of the effort.
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blueshark
Novice Class
Posts: 99
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posted August 06, 2010 11:14 AM
Mityvac is the best option, if you don't have one try moving the handle bar around so the master cylinder changes postion. This will let air bubbles float out.
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blueshark
Novice Class
Posts: 99
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posted August 06, 2010 11:16 AM
Bleed the master cylinder first, pump it up a few times and lossen the line at the master cylinder.
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tonytee
Parking Attendant
Posts: 20
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posted August 06, 2010 10:32 PM
mityvac huh.never heard of that but i see were yall are going.i knew i had 2 do something like that.im gonna have 2 look into that.thanks
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rtbain
Expert Class
old, fat and slow
Posts: 244
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posted August 09, 2010 12:40 PM
Bleed from the bottom. Air floats up in fluid, not down.
Get a big syringe from a veterinarian. Attach a clear piece of line.
Suck all the fluid out of the master cylinder.
Fill the syringe with brake fluid.
Clear the air from the syringe/tubing.
Place tubing on the caliper bleed valve.
Apply pressure to the syringe, crack valve open.
Fluid will force air out the master cylinder relief circuit.
I like this method better than MytyVac, and lots cheaper.
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Randy
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gixxre750
Novice Class
Posts: 42
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posted August 09, 2010 01:24 PM
I agree! thats how i do it
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2000redrocket
Pro
Posts: 1662
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posted August 09, 2010 02:26 PM
yep go from the bottom if you can get the equipment. if not mighty vac.(get a plastic one ) it will last longer.
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