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mukluk Samba Member
Joined: October 18, 2012 Posts: 7028 Location: Clyde, TX
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Posted: Wed Feb 20, 2013 11:27 pm Post subject: |
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Do you have the brake shoes turned all the way out so they lock up the drums? You can't bleed all the air out of the lines unless you do.
Once you have all the shoes adjusted out against the drums, ensure all the bleeders are fully closed, all the brake line fittings are properly tightened, and the reserviour is topped off with fluid. Next, start at the front left wheel cylinder and bleed it until no more bubbles come out. From there go to the right front, then left rear, and finish at the right rear. Make sure while you're bleeding that the fluid level in the reserviour never drops to where the master starts sucking air. After all the wheel cylinders are bled, readjust the brake shoes away from the drums so they provide a very slight drag on the drum.
If you still don't get any fluid to come out of the rear cylinders after thoroughly bleeding the fronts, then you either have a line blockage, or if you've installed a dual circuit master then the rear circuit piston isn't working properly (probably a blocked compensating port). |
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Eric&Barb Samba Member
Joined: September 19, 2004 Posts: 24764 Location: Olympia Wash Rinse & Repeat
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Posted: Thu Feb 21, 2013 7:33 am Post subject: |
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How much push rod play do you have? _________________ In Stereo, Where Available! |
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iluvmybug Samba Member
Joined: March 20, 2006 Posts: 42
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Posted: Thu Feb 21, 2013 9:36 am Post subject: |
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yes locked all the way.
push rod play i think is 1 mm or 5-7 mm at the tip of the clutch pedal. |
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Eric&Barb Samba Member
Joined: September 19, 2004 Posts: 24764 Location: Olympia Wash Rinse & Repeat
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Posted: Thu Feb 21, 2013 7:24 pm Post subject: |
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Then you might need to bench bleed the MC.
Since it is in the VW now, have a helper push down on the pedal while you have the front farthest from MC bleeder open. Then close the bleeder and have the helper let up on the pedal. Repeat 20 times or till you get brake fluid coming out.
Once the above is working and bled, repeat the above on the rear axle bleeder farthest from the MC.
Do not be afraid of double check that the shoes might need more adjusting into the drums.
If still no joy, it might be you just have a bad new MC. _________________ In Stereo, Where Available! |
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iluvmybug Samba Member
Joined: March 20, 2006 Posts: 42
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Posted: Thu Feb 21, 2013 9:46 pm Post subject: |
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ok, thanks a lot gentlemen, for the advice will update you as soon as i get my hands on it.
I appreciate it. |
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128vw Samba Member
Joined: April 05, 2006 Posts: 222 Location: Western Massachusetts
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Posted: Mon May 05, 2014 6:12 am Post subject: |
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Has anybody tried to bleed 56 rear brakes with the bleeder on the bottom? |
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grandpa pete Samba Member
Joined: July 06, 2008 Posts: 6426 Location: St. Petersburg, FL
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grandpa pete Samba Member
Joined: July 06, 2008 Posts: 6426 Location: St. Petersburg, FL
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Chris dubosq Samba Member
Joined: May 04, 2016 Posts: 6 Location: Trappe
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Posted: Wed May 04, 2016 7:52 am Post subject: Re: Brake Bleeding |
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Hi everyone, hope you can shed some light on my brake issue,64 bug, replaced master cylinder, all rubber lines all brake cylinders, reservoir, and metal brake lines, pedal still goes to the floor even after many bleeds!!! Please help very frustrated! |
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Chris dubosq Samba Member
Joined: May 04, 2016 Posts: 6 Location: Trappe
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Posted: Wed May 04, 2016 7:52 am Post subject: Re: Brake Bleeding |
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Hi everyone, hope you can shed some light on my brake issue,64 bug, replaced master cylinder, all rubber lines all brake cylinders, reservoir, and metal brake lines, pedal still goes to the floor even after many bleeds!!! Please help very frustrated! |
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Eric&Barb Samba Member
Joined: September 19, 2004 Posts: 24764 Location: Olympia Wash Rinse & Repeat
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Posted: Wed May 04, 2016 7:56 am Post subject: Re: Brake Bleeding |
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Chris dubosq wrote: |
Hi everyone, hope you can shed some light on my brake issue,64 bug, replaced master cylinder, all rubber lines all brake cylinders, reservoir, and metal brake lines, pedal still goes to the floor even after many bleeds!!! Please help very frustrated! |
Single or dual MC?
How are you bleeding the system? _________________ In Stereo, Where Available! |
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Chris dubosq Samba Member
Joined: May 04, 2016 Posts: 6 Location: Trappe
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Posted: Wed May 04, 2016 8:33 am Post subject: Re: Brake Bleeding |
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Single mc, bleeding the old school way pump pump pump crack valve open repeat on all four staying with right read |
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Eric&Barb Samba Member
Joined: September 19, 2004 Posts: 24764 Location: Olympia Wash Rinse & Repeat
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Posted: Wed May 04, 2016 8:36 am Post subject: Re: Brake Bleeding |
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Chris dubosq wrote: |
repeat on all four staying with right read |
Guessing you mean " starting with right rear".
Are you getting a good amount of brake fluid out of each bleeder? _________________ In Stereo, Where Available! |
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Chris dubosq Samba Member
Joined: May 04, 2016 Posts: 6 Location: Trappe
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Posted: Wed May 04, 2016 8:40 am Post subject: Re: Brake Bleeding |
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Yes, sorry right rear. Plenty of fluid on each, very weird, had a pedal drive down the road, got back pumped out a few times went right to the floor, and btw no leaks |
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Eric&Barb Samba Member
Joined: September 19, 2004 Posts: 24764 Location: Olympia Wash Rinse & Repeat
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Posted: Wed May 04, 2016 8:46 am Post subject: Re: Brake Bleeding |
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Chris dubosq wrote: |
had a pedal drive down the road |
Drop to the floor on a drive maybe? If so, sounds like a bad MC. Take it apart and inspect.
Otherwise it sounds like you have a joyriding pedal.... _________________ In Stereo, Where Available!
Last edited by Eric&Barb on Wed May 04, 2016 8:52 am; edited 1 time in total |
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Chris dubosq Samba Member
Joined: May 04, 2016 Posts: 6 Location: Trappe
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Posted: Wed May 04, 2016 8:48 am Post subject: Re: Brake Bleeding |
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Second new one! Very strange I've had bad mc before but can't be 2 in a row can it? |
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Eric&Barb Samba Member
Joined: September 19, 2004 Posts: 24764 Location: Olympia Wash Rinse & Repeat
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Posted: Wed May 04, 2016 8:54 am Post subject: Re: Brake Bleeding |
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Do you think both MCs were made on the same assembly line? Then someone there could have made the same mistake on two or more MCs. _________________ In Stereo, Where Available! |
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Drewmon Samba Member
Joined: February 22, 2016 Posts: 226 Location: Maine
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Posted: Wed May 04, 2016 11:02 am Post subject: Re: Brake Bleeding |
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I'm having a tough time getting firm pedal on the 66. It already had disks on the front, I replace the MC with a dual unit because I also put rear disks on the car. I bench bled the new MC, installed it, hooked up all the lines and did a series of bleeding, gravity, vacuum, and the old pump pump bleed thing. I have brakes, but the pedal goes down more than half before any action on the brakes.
More bleeding? |
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Eric&Barb Samba Member
Joined: September 19, 2004 Posts: 24764 Location: Olympia Wash Rinse & Repeat
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Posted: Wed May 04, 2016 11:30 am Post subject: Re: Brake Bleeding |
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Drewmon wrote: |
More bleeding? |
Air in the system will result in pedal getting higher and higher the more times you pump it. Then when you let off the pedal for more than a few seconds, the pedal the next time you push down on it, will be again be at same low spot. Plus the pedal will have a squishy feel to it.
With properly bled brake system you should notice the slightest increase between the first and second pump, but after that should be same height pedal. Slight change is due to the flex lines swelling a tiny amount with the increased pressure inside. Pedal will have a rock hard feel to it.
Which of the above describes your situation? _________________ In Stereo, Where Available! |
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kankles747 Samba Member
Joined: September 14, 2015 Posts: 33 Location: Lubbock
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Posted: Wed May 04, 2016 6:37 pm Post subject: Re: Brake Bleeding |
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This might be a dumb question but are you brakes adjusted? |
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