Andy W
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| posted on 27/2/09 at 07:03 PM |
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Help bleeding air out of brakes
Hi
Spent most of last Saturday bleeding my brakes. I'd had a couple of previous go's but they were still spongy. So set about using an easy
bleed and the traditional method, but all I get out is clean fluid with no air. The first press of the pedal go's to the floor and 2nd press is
good.
The brake setup up is
Twin master cylinders with bias bar
wilwood fronts
sierra recon rears
also bled the brake light switch whilst under pressure.
Just wondered if anyone had any tips, as I can't see what I'm going to do different this week to last and I'm fast running out of
time for sva
Thanks Andy
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Wadders
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| posted on 27/2/09 at 07:08 PM |
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Use your easy bleed, but unbolt all the calipers first, chock the pistons back with some sort of spacer to stop them popping out, As you bleed each
one, invert the calipers a number of times, you'll be amazed at how many bubbles appear.
Al.
Originally posted by Andy W
Hi
Spent most of last Saturday bleeding my brakes. I'd had a couple of previous go's but they were still spongy. So set about using an easy
bleed and the traditional method, but all I get out is clean fluid with no air. The first press of the pedal go's to the floor and 2nd press is
good.
The brake setup up is
Twin master cylinders with bias bar
wilwood fronts
sierra recon rears
also bled the brake light switch whilst under pressure.
Just wondered if anyone had any tips, as I can't see what I'm going to do different this week to last and I'm fast running out of
time for sva
Thanks Andy
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handyandy
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| posted on 27/2/09 at 07:11 PM |
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i don,t know if this will totally cure your problem but try this,
put a pole or something wedged onto brake pedal & leave overnight( so pedal is depressed all night) , sounds odd but it does work,
failing that i reckon there is still air in a top loop (bend) probably on rear brake lines.
hth
andy
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britishtrident
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| posted on 27/2/09 at 07:23 PM |
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Front calipers aren't presenting the pad surface true to the front discs.
You need to get the calipers setup absolutely parrallel to the disks as any tiny ammount of movement is magnified by the hydraulic ratio and the
pedal leverage.
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grusks2
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| posted on 27/2/09 at 07:26 PM |
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I've used this method loads of times, and it works, did it overnight wednesday and blead them thursday and now i have a nice hard pedal.
It seams to push all the small airbubbles together into bigger bubbles.
I also pulled the rear flexi pipes below the caliper and tapped the brake light switch just incase any air stuck, low and behold a few bubbles and its
fine now.
quote:
Originally posted by handyandy
i don,t know if this will totally cure your problem but try this,
put a pole or something wedged onto brake pedal & leave overnight( so pedal is depressed all night) , sounds odd but it does work,
failing that i reckon there is still air in a top loop (bend) probably on rear brake lines.
hth
andy
http://mac1worxbuild.wordpress.com/
forgot my old password so another username doh
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Antnicuk
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| posted on 27/2/09 at 07:40 PM |
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you have exactly the same set up as me and it took me ages to bleed mine. if you have got most of it out, use the pole method overnight, it
definitely works, the air is forced back to the m/c.
also the pedal will feel a little spongy due to reason mentioned above, if the pads are pretty close to being parallel then after a little use they
will bed in.
[Edited on 27-2-09 by Antnicuk]
600 BHP per ton, Stylus Brought back from the dead! Turbo Rotary Powered!
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gottabedone
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| posted on 27/2/09 at 07:56 PM |
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I had the same problem with my Minari and the the Easi bleed is great.
I use a small pot of fluid on each corner with a tube from the bleed nipple to the pot. Keep the level of fluid above the bottom of the tube. Fluid
will be sucked back up the tube on the up stroke.
Keep an eye on the M/C though as it fills up quickly.
Also don't pump too vigorously  as it breaks up the air bubbles and disperses the air around the system more.
good luck
Steve
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ashg
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| posted on 27/2/09 at 08:36 PM |
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it may sound like a daft question but are your bleed nipples facing up or down?
Anything With Tits or Wheels Will cost you MONEY!!
Haynes Roadster (Finished)
Exocet (Finished & Sold)
New Project (Started)
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Andy W
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| posted on 27/2/09 at 10:07 PM |
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Thanks for all the advice, I'll give a go tomorrow. Yes the bleed nipples are facing up
Thanks Andy
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BenB
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| posted on 27/2/09 at 11:58 PM |
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I know this sounds really stupid but try tapping the caliper as you bleed it. I took three goes to bleed the brakes on my kit. On the 3rd attempt I
tapped the caliper with a spanner and shed loads of bubbles came out. Job done!!!!
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Andy W
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| posted on 28/2/09 at 05:02 PM |
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Thanks for all the help, I jammed some wood against the peddle last night, when I removed it this morning after a couple of minutes peddle was still
spongy.
I bled the front brakes with the easy bleed turning the calipers upside down and bleeding all four nipples, next to no air came out. Then went on to
the backs offside loads of air and same with the nearside. Not sure if the piece of wood did anything but the brakes now feel great.
Thanks Andy
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spdpug98
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| posted on 28/2/09 at 05:55 PM |
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Good tips, I started bleeding my brakes today have loads of air at the front which I can't seem to get rid of.
I have pushed the brake pedal down with a piece of wood and will try again in the morning
My Blog: http://spdpug98.wordpress.com/
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handyandy
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| posted on 28/2/09 at 08:01 PM |
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quote:
Originally posted by Andy W
Thanks for all the help, I jammed some wood against the peddle last night, when I removed it this morning after a couple of minutes peddle was still
spongy.
I bled the front brakes with the easy bleed turning the calipers upside down and bleeding all four nipples, next to no air came out. Then went on to
the backs offside loads of air and same with the nearside. Not sure if the piece of wood did anything but the brakes now feel great.
Thanks Andy
glad you got it sorted, a combination of all suggested tips did the trick, 
andy(another one)
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Si
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| posted on 28/2/09 at 11:45 PM |
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Andy, that's great new's, one more to cross off your list. The road is getting ever nearer.
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