SOHC.co.uk Forums > CB350/400

CB400 - Front Brake Bleeding.

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Integra99:
Hi all,

Has anyone had issues bleeding up the front brake.. I have rebuilt the caliper, new pads, new M/C so all good. I have brake pressure but not much.. unfortunately I dont have use of a compressor to assist as feel it might need a little help. All the lines are tight but I keep getting bubbles in the line so I have no idea how its getting air in.. I assume the brake switch is an area for air to get trapped. The switch works as its operating the rear light I'm just struggling to get a firm lever.

Any tips.. its off for an MOT soon so my friend can do it on his system but would be nice to turn up a little more prepared.

taysidedragon:
All I can suggest is fill the reservoir slowly so you don't introduce bubbles there. Keep pushing the fluid through and make sure you close the bleed valve while still squeezing the brake lever each time.
It should work once enough has gone through. Patience required.

Integra99:

Thanks yes I probably haven't been patient enough.. one thing I am getting is bubbles out of the reservoir when releasing the brake lever.. not a lot but seem odd"!

taysidedragon:
Is that after closing the bleed nipple then releasing the lever?

Tomb:
Persistence pays off, I ended up cracking open all the banjo bolts on the lines on my 500, lots of air came out there, bloody messy though.

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