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SOHC.co.uk Forums => CB500/550 => Topic started by: cb550k-aaron on September 28, 2016, 10:20:26 AM

Title: Front brake woes
Post by: cb550k-aaron on September 28, 2016, 10:20:26 AM

Little or no resistance in the lever. Caliper been rebuilt and the master cylinder redone too. Bled etc but not working properly

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Title: Re: Front brake woes
Post by: Johnwebley on September 28, 2016, 11:32:41 AM

when you say no resistance,do you mean it come to the bar with nothing happening? or its just very spongy,or soft.


 you could try a reverse  purge,take the pads out,pump the brake untill the piston is almost out,then carefully use a G clamp to
push the piston back,it may flush any air out of the master cylinder,



 good luck,and be careful of the brake fluid,it kills paintwork

Title: Re: Front brake woes
Post by: cb550k-aaron on September 28, 2016, 11:36:41 AM

Very soft and spongy mate. It does work but not great at all wouldn't be safe like

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Title: Re: Front brake woes
Post by: paul G on September 28, 2016, 12:26:49 PM

Tape the lever up to the grip and leave it for a couple of days.
Works for me.

Title: Re: Front brake woes
Post by: cb550k-aaron on September 28, 2016, 12:33:03 PM

Paul will give that a try

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Title: Re: Front brake woes
Post by: cb550k-aaron on September 28, 2016, 03:58:59 PM

I don't have a Mud guard on as I have converted to a Café Racer. Do u have any pics showing what it should be?

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Title: Re: Front brake woes
Post by: Bryanj on September 28, 2016, 04:34:45 PM

Two things

bleed just the master first, i have put up a description on here before

With no front guard you need a fork brace or the forks will flex all over the place and handling will be crap

Title: Re: Front brake woes
Post by: cb550k-aaron on September 28, 2016, 04:36:55 PM

Oh really I didn't realise that tbh. I'll look into one. Can one be bought or does it have to be made?

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Title: Re: Front brake woes
Post by: mike the bike on September 28, 2016, 05:10:43 PM

Either.  There's 1690 to choose from on ebay.

Title: Re: Front brake woes
Post by: Bryanj on September 28, 2016, 05:10:52 PM

If you have an old tatty mudguard you can remove the centre brace and use that to mount your "sporty" guard, you have to have some sort of mudguard to pass MOT

Title: Re: Front brake woes
Post by: Bryanj on September 28, 2016, 05:13:07 PM

carefull with ebay as the not so old 500 twin (and i dont mean the T) was also a cb 500 and a lot of sporty parts are made for those

Title: Re: Front brake woes
Post by: Lynx on September 28, 2016, 10:13:18 PM

Aaron,
Have you tried sucking the fluid through from the bleed nipple with a vacuum?

Title: Re: Front brake woes
Post by: cb550k-aaron on September 28, 2016, 10:28:29 PM

Quote from: Lynx on September 28, 2016, 10:13:18 PM

Aaron,
Have you tried sucking the fluid through from the bleed nipple with a vacuum?

Lynx.

Yes mate. All air out of it too

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Title: Re: Front brake woes
Post by: Lynx on September 28, 2016, 10:30:09 PM

Well done 😊.

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