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Bleeding brakes
gunman - 6/6/12 at 09:06 PM

I have recently upgraded my diff in my Tiger Cat E1 to LSd with bolt on shafts and upgraded to rear disc brakes. I also have upgraded the fronts from sierra 240mm discs to 260mm discs. I now cant get the pedal hard, theres a fair bit of travel but have bled the brakes out over 5 times. The pedal wont go to the floor, maybe half way down and then goes hard. I even went and bought an eezibleed to try that but no difference. MC is a std sierra item.

On a test drive at 35mph on a straight road I hit the pedal hard and the fronts locked up. Could this just be due to the larger pistons in all 4 calipers or am I missing something when bleeding? I have searched every joint in the pipes and found no leaks anywhere.

Ben_Copeland - 6/6/12 at 09:08 PM

Are the bleed nipples all at the top??

At the bottom and you wont get all the air out !

gunman - 6/6/12 at 09:13 PM

Yes, all at the top.

Ben_Copeland - 6/6/12 at 09:28 PM

New pads that need bedding in? Can sometimes feel spongy

gunman - 6/6/12 at 09:33 PM

could be it, I've new discs and pads all round.

Ben_Copeland - 6/6/12 at 09:54 PM

quote:
Originally posted by gunman
could be it, I've new discs and pads all round.


Bed them in, as long as it feels safe enough to drive then try it and see

Grimsdale - 6/6/12 at 10:44 PM

i have had problems with pitons sticking to seals in calipers, add some brake fluid behind the dust boot to lube the outer of the seal. This will work for a bit, but it is best to dismantle and lube properly.
also double check calliper sliders move easily and are lubricated.

gunman - 7/6/12 at 05:22 PM

Calipers should all be Ok as I have rebuilt them all with new seals and slider kits.