Brake problems

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Redthelmem
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Brake problems

Post by Redthelmem » Sun Mar 10, 2019 8:41 pm

Hi all not been able to do much to my 66 Brazilian split for a while hence not been on here for a while.

I’m currently doing the brakes on it, had a disc conversion installed. I’ve changed the master cylinder for a duel circuit and changed the brake pipes, all have been bled through and no air in the system as far as I can see. The brake pedal still travels to the floor. The bus won’t move when the brakes are applied and I try driving it forward but im not happy that there is nothing until the floor.

I’m toying with retro fitting a brake booster with a vacum pump but I don’t know really to be honest.

My Karmann brakes are the same system and behave as I’d expect and that is a 68.

Before I go spending a bucket full I’d appreciate any advice.

Do I need to bleed more or is this how bus brakes work? Not had one before so I’m scratching my head really.

Appreciate any advice or tips

Thanks

Iain

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vwJim
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Re: Brake problems

Post by vwJim » Sun Mar 10, 2019 8:49 pm

Fix the issue you have before you fit a servo. You've got a fault or air in the system
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Redthelmem
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Re: Brake problems

Post by Redthelmem » Sun Mar 10, 2019 9:32 pm

Cheers Jim, I’m assuming that the travel shouldn’t be to the floor.


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Re: Brake problems

Post by BlastingDiePast » Mon Mar 11, 2019 7:08 am

Is your rod adjusted correctly on the master ? And is it the correct one? The rod should just touch the cylinder inside the master

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Re: Brake problems

Post by vwJim » Mon Mar 11, 2019 8:51 am

BlastingDiePast wrote:
Mon Mar 11, 2019 7:08 am
Is your rod adjusted correctly on the master ? And is it the correct one? The rod should just touch the cylinder inside the master
VW instructions say 1mm clearance.

If a CSP style upgrade fitted, their instructions say slightly more, (I forget the exact amount but the instructions are clear)
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Re: Brake problems

Post by vwJim » Mon Mar 11, 2019 8:52 am

Redthelmem wrote:
Sun Mar 10, 2019 9:32 pm
Cheers Jim, I’m assuming that the travel shouldn’t be to the floor.

No, definitely not. Depending on the parts installed, I wouldn't expect the pedal to move anywhere near that far.
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Re: Brake problems

Post by ted698 » Mon Mar 11, 2019 10:35 pm

Are your rear brakes (I’m assuming still drums) adjusted up ok? Maybe try adjusting them up tight... have you got more pedal then? If you pump the pedal do you get a much higher pedal?


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Redthelmem
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Re: Brake problems

Post by Redthelmem » Thu Mar 14, 2019 11:09 pm

Hi guys
Appreciate the advice, new rear drum set is are here so I’ll be tackling this this weekend. I’ll report back. Much appreciated


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Re: Brake problems

Post by Redthelmem » Thu Mar 14, 2019 11:12 pm

To add, I am assuming the brake light switch goes at the back near side? From reading other threads do the front brakes get fed from the rear ports and the rear from the front? I’ve punch an all in one bleeding kit off a friend, should I bleed front discs first then rear drums or all at once as the tool is designed to do? I’ve an afternoon to play and probably Sunday, which I’m hoping I won’t need 😂Tvm in advance

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Re: Brake problems

Post by vwJim » Fri Mar 15, 2019 9:35 am

Usually you start at the furthest brake and work towards the m/c. No idea if that tool is a good is a good idea or not.
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Re: Brake problems

Post by Wigsplitta » Fri Mar 15, 2019 8:34 pm

If its a gunson eezibleed then you shouldn't have any problems. I think they're a great piece of kit and make bleeding any brake system or hydralic clutch on your own a doddle. It keeps pressure on the system using a spare wheel/tyre so allows you to locate any leaks also. Just remember to follow the instructions and deflate the tyre to 20psi IIRC as to not put too much pressure through the system. Start with the offside rear, then nearside rear, offside front and finally nearside front. Good luck!


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Re: Brake problems

Post by Redthelmem » Sun Mar 17, 2019 2:19 pm

All done and using the eezee bleed kit done the job, changed the rear drum servo’ too while I was there.

Still a bit of travel but they are now working as I’d expect

Really appreciate your help and advice.

Now onto the next issue.

Thanks again

Iain


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Re: Brake problems

Post by Redthelmem » Mon Apr 08, 2019 8:17 am

Adjusted the pedal drive into the master cylinder and now working as expected. Thanks for the advice as always. Nearly time for it to go to Johnny Java for the rest of it to be done l, I’ve already warned him to be gentle with me

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