Avoneer
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| posted on 27/2/04 at 08:32 PM |
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Bleeding brakes!!!!!
Hi,
Went to help Vintagebuilder bleed his brakes last night to no avail.
The rear drums appear to be set up right but you can still turn them with the brake pedal on full. The fronts lock solid. the handbrake also locks the
rear drums solid.
Should the handbrake be tightened really tight before commencing bleeding the brakes????
Cheers,
Pat....
No trees were killed in the sending of this message.
However a large number of electrons were terribly inconvenienced.
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Avoneer
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| posted on 27/2/04 at 08:34 PM |
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Oops, forgot to add it's an MK with Sierra 2ltr rear drums.
Pat...
No trees were killed in the sending of this message.
However a large number of electrons were terribly inconvenienced.
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Dusty
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| posted on 27/2/04 at 08:45 PM |
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Sounds like the automatic adjusters on the shoe levers are not working, which will appear better if the handbrake linkage is tightened but strip the
drums off and free the adjusters is the real solution. Might just be some air still in the rear circuit.
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Mark Allanson
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| posted on 27/2/04 at 08:58 PM |
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Take the shoes off and put a carver clamp/big jubilee clip around the shoes, now test the pedal, if it is firm - air in the system is not the problem,
it will be the adjusters. Bad rear adjusters usually give binding front brakes as the fluid is squeezed back into the system, and the only place for
it to go is the calipers!
If it is air in the system, try jacking the rear of the car up and bleed, use an easybleed pressure system, or borrow a fluid suction system from the
local garage (£50 if you want one to keep)
Possibly the bias valve incorrectly adjusted?
If you can keep you head, whilst all others around you are losing theirs, you are not fully aware of the situation
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Avoneer
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| posted on 27/2/04 at 09:05 PM |
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Think it is definately something to do with the automatic adjusters on the shoe levers but they "appeared" to be working. They did look a
slightly different design to mine, but were "as fitted to the donor" (I have 2ltr Sierra drums on my Avon).
Like the idea of the jubilee thing. Will have to get vintage to try it and see if we can isolate the problem.
Cheers guys,
Pat...
No trees were killed in the sending of this message.
However a large number of electrons were terribly inconvenienced.
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Northy
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| posted on 27/2/04 at 09:07 PM |
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Are the bleed nipples the highest point? Not sure of the layout on the Indy. Is it possible to remove them to bleed, and turn so the nipple is at the
top?
Ha, ha, I said nipples! 
Graham
Website under construction. Help greatfully received as I don't really know what I'm doing! 
"If a man says something in the woods and there are no women there, is he still wrong?"
Built 2L 8 Valve Vx Powered Avon
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theconrodkid
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| posted on 27/2/04 at 11:15 PM |
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with a drum off try pressing the brake pedal,shoes should come right out,if not its a pressure prob,badly adjusted shoes wont work either,un-adjust
the handbrake as well,if the adjustment is all on the cable they wont work either
who cares who wins
pass the pork pies
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vintagebuilder
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| posted on 28/2/04 at 05:07 PM |
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Bleedin brakes!!!!!
Afternoon All,
Picking up on Pats' posting.I have tried Marks' suggestion with the Jubilee clips. The brake pedal is solid with clips on.
Trying Conrods idea the shoes move outwards and the self-adjusters work.
With the drums back on however, when I pump the brake pedal I can hear the self-adjusters clicking but the pedal is nowhere like as solid as when
Jubilee clips were on. I've bled system twice with Easi- Bleed.
Any more ideas would be really welcolm.
Regards
David
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Staple balls
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| posted on 28/2/04 at 05:14 PM |
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is it possible that the shoes are worn out so you're not quite getting full contact?
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Mark Allanson
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| posted on 28/2/04 at 05:18 PM |
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The pedal is never as good as it is with the jubilee clips fitted, because the self adjusters always leave a bit of clearance to prevent binding. With
the drums back on you should have a decent pedal, unless the self adjusters are not doing their job, the clicking you can hear could be them adjusting
up, then falling back. Try jamming the hand brake on and off about a dozen times (someone correct me, but I think the sierra adjusters work off the
handbrake not the slave cylinder?).
If all else fails, looks like you are up for a new set of adjusters - I have a complete sierra here (except engine/box/prop/column/loom etc), but it
would probably be a bit far to go!
If you can keep you head, whilst all others around you are losing theirs, you are not fully aware of the situation
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Kitlooney1000
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| posted on 28/2/04 at 05:41 PM |
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check the automatic adjusters are set right
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theconrodkid
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| posted on 28/2/04 at 06:08 PM |
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the adjusters should stop clicking after a few goes,if they keep going they are probly nacked,you got the little curley spring and small ratchet part
on right?
who cares who wins
pass the pork pies
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tr
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| posted on 28/2/04 at 07:19 PM |
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Mine work in normal foot braking (not tried the handbrake yet) and they look like this, if it helps...
The first time I set them up I had the adjusters the wrong way up, and that caused them to..ummm.. not work.
Tom
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theconrodkid
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| posted on 28/2/04 at 07:26 PM |
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you know what they say a picture is worth,btw there is another setup where the adjuster is in 2 peices on the shoe not the spreader bar
who cares who wins
pass the pork pies
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Avoneer
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| posted on 28/2/04 at 08:40 PM |
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Vintage has the ones as pictured. the others are from the 1.3 and 1.8 Sierra I think. The balance bars are still ever so slightly different. Hard to
explain without a pic. Maybe a different set of balance bars from the scrappies will be the way forward.
Pat.....
No trees were killed in the sending of this message.
However a large number of electrons were terribly inconvenienced.
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vintagebuilder
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| posted on 29/2/04 at 02:06 PM |
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Afternoon All,
I was going to try the handbrake to set the self-adjusters.Thought I'd check that the handbrake was functioning correctly i.e pushing the shoes
outward. With the drums off I could see that it was only the leading shoe which moved outward when handbrake applied. Is this is as it should be or
should both shoes move outwards.
Could I have my brakes incorrectly assembled and that is the cause of the problem?
Thanks for all your help and advice so far.
David
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theconrodkid
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| posted on 29/2/04 at 03:06 PM |
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the leading shoe will move till it reaches the drum,then the other one will move,jam shoes with a screwdriver/someone elses finger and see
who cares who wins
pass the pork pies
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vintagebuilder
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| posted on 1/3/04 at 10:32 PM |
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Evening All,
Just a word of thanks, especially to Avoneer, to all of you who took the time to give advice on brake problem.
Now solved
Regards
David
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Northy
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| posted on 1/3/04 at 10:36 PM |
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What was it?
Graham
Website under construction. Help greatfully received as I don't really know what I'm doing!
"If a man says something in the woods and there are no women there, is he still wrong?"
Built 2L 8 Valve Vx Powered Avon
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Avoneer
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| posted on 1/3/04 at 11:15 PM |
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Don't know for sure. Reset the adjusters, bled the brakes again, tightened the handbrake cables and all is now well.......
Pat.....
No trees were killed in the sending of this message.
However a large number of electrons were terribly inconvenienced.
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