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Jon Site Admin
Joined: 01 Jun 2006 Posts: 2421 Location: Bishop GA
1969 Volkswagen Type 3
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Posted: Sat Mar 14, 2009 10:02 pm Post subject: No pressure in brake system |
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I have installed a new master cylinder and one new wheel cylinder on a 67 bug. I have no more air bubbles when bleeding the system, but I can't build any pressure. The shoes are adjusted out. What am I missing? _________________ 73 Typ481
76 Westy
73 Bug
69 Squareback
70 Fastback
63 Bug
Last edited by Jon on Sat Mar 14, 2009 10:44 pm; edited 1 time in total |
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Cave Man
Joined: 09 Mar 2009 Posts: 52 Location: Cave Spring, Ga
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Posted: Sat Mar 14, 2009 10:19 pm Post subject: |
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Rubber hose swelling?
Hole in line inside pan. _________________ 1962 "Red Rocket" 2110 Toy
1970 Bone Stock Driver |
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Jon Site Admin
Joined: 01 Jun 2006 Posts: 2421 Location: Bishop GA
1969 Volkswagen Type 3
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Posted: Sat Mar 14, 2009 10:48 pm Post subject: |
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After reading several threads on the Samba, I'm pretty sure there is still air in the MC. Read a couple of techniques to bleed the MC on the car. I'll try them tomorrow. _________________ 73 Typ481
76 Westy
73 Bug
69 Squareback
70 Fastback
63 Bug |
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serprice
Joined: 26 Nov 2007 Posts: 349 Location: Statham
1974 Volkswagen Beetle
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Posted: Sat Mar 14, 2009 10:52 pm Post subject: |
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How are you bleeding it Jon? Are you having someone pump it while you open the bleeders at the wheels? I f so, is it skeeting fluid when you do so? You can usually gravity bleed a mc. Just crack the lines at the mc and let it drip for a min. Or have some one push petal down when you crack the lines. If you need a hand sunday give me a buzz. _________________ Shane Price
74 standard beetle |
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Jon Site Admin
Joined: 01 Jun 2006 Posts: 2421 Location: Bishop GA
1969 Volkswagen Type 3
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Posted: Sat Mar 14, 2009 11:26 pm Post subject: |
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Yes. I was doing the pump and hold. I got to where there was only fluid coming out, but it was only running out, not shooting out. I'll try the gravity bleed, if that doesn't work, I read a couple other things to try. Thanks Shane. I'll give you a call if I can't get it. _________________ 73 Typ481
76 Westy
73 Bug
69 Squareback
70 Fastback
63 Bug |
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71_georgia_beetle
Joined: 28 Mar 2008 Posts: 440 Location: Grayson, GA
1974 Volkswagen Westfalia
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Posted: Sun Mar 15, 2009 12:14 am Post subject: |
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This sound all to familiar. _________________ 71 Standard Beetle "Big Bird"
74 Westfalia "Winifrid"
Burel Photography
Call me if I need you! |
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Clyde
Joined: 03 Jun 2006 Posts: 855 Location: Athens
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Posted: Sun Mar 15, 2009 9:06 am Post subject: |
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Did you ever find out if there was a yellow sticker on the box? Scott's had one. I'll need the box to return it.
There's a possibility of a bad batch here.
I've got a few from a different vendor on the shelf here, with a different # on the casting. _________________ '69 Bug, 1776, dual kadrons, Web 111 cam
Clyde's Aircooled
(706) 206 6327 |
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Jon Site Admin
Joined: 01 Jun 2006 Posts: 2421 Location: Bishop GA
1969 Volkswagen Type 3
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Posted: Sun Mar 15, 2009 7:25 pm Post subject: |
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I've been gone all day working on the Poker Run route ( 300 miles of riding ) , so I haven't looked for the box yet. Most of the threads on the Samba say the MC needs to be bled before hooking it up. I found a couple of ways to do it while it is in the car and Shane gave me a way to do it. I'll try all that first. _________________ 73 Typ481
76 Westy
73 Bug
69 Squareback
70 Fastback
63 Bug |
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Mountain Power House
Joined: 26 Jul 2006 Posts: 879 Location: Aircooled Heaven USA
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Posted: Sun Mar 15, 2009 7:45 pm Post subject: |
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Why didn't you bench bleed it?
If the pushrod is over adjusted you cannot get enough fluid in the cylinder to do much of anything.
Put some lash in the master cylinder pushrod and see if you can get some response from the cylinder.
Open all the bleeders on the wheel cylinders and let them drip bleed for 15 minutes and see what happens. _________________ Jake Raby
57 Oval
64 Porsche 356C Outlaw
66 Bug -The Plague Returns!
73 VW Thing (Will I ever finish it?)
73 Superbeetle (Suby Power!)
76 Porsche 912E (X3!)
79 VW Iltis 4X4 |
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Jon Site Admin
Joined: 01 Jun 2006 Posts: 2421 Location: Bishop GA
1969 Volkswagen Type 3
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Posted: Sun Mar 15, 2009 7:48 pm Post subject: |
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Mountain Power House wrote: | Why didn't you bench bleed it?
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Uhh Clyde, you want to answer this one???????
They are dripping now. _________________ 73 Typ481
76 Westy
73 Bug
69 Squareback
70 Fastback
63 Bug |
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Mountain Power House
Joined: 26 Jul 2006 Posts: 879 Location: Aircooled Heaven USA
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Posted: Sun Mar 15, 2009 9:38 pm Post subject: |
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Keep the fluid level up while they are dripping. To get the rears to drip enough you may have to jack the front of the car up a bit.
Once they have dripped for 15 minutes they should bleed out quick and easy... I did this on Beth's car and never even had to bleed them, just close the bleeders and drive it!
(learned this bleeding brakes on Helicopters :-) _________________ Jake Raby
57 Oval
64 Porsche 356C Outlaw
66 Bug -The Plague Returns!
73 VW Thing (Will I ever finish it?)
73 Superbeetle (Suby Power!)
76 Porsche 912E (X3!)
79 VW Iltis 4X4 |
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Jon Site Admin
Joined: 01 Jun 2006 Posts: 2421 Location: Bishop GA
1969 Volkswagen Type 3
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Posted: Sun Mar 15, 2009 9:48 pm Post subject: |
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I think they are ready now. I let them drip and then bled as usual. Much air in the front at first. The fluid doesn't shoot out like I think it should, but the pedal feels good. I'll reinstall the gas tank and try them tomorrow. ( after a final adjusting )
Thanks for all the help....P.S. Clyde I found the box on my trash can outside in the rain. _________________ 73 Typ481
76 Westy
73 Bug
69 Squareback
70 Fastback
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Mountain Power House
Joined: 26 Jul 2006 Posts: 879 Location: Aircooled Heaven USA
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Posted: Sun Mar 15, 2009 10:11 pm Post subject: |
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Cool!
Re-bleed in a week or so... _________________ Jake Raby
57 Oval
64 Porsche 356C Outlaw
66 Bug -The Plague Returns!
73 VW Thing (Will I ever finish it?)
73 Superbeetle (Suby Power!)
76 Porsche 912E (X3!)
79 VW Iltis 4X4 |
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