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CLEMENTINE71 Samba Member
Joined: May 29, 2014 Posts: 56 Location: Auburn CA
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Posted: Wed Aug 26, 2015 9:12 am Post subject: Brake Bleeding Issues!? |
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I'm having a hell of a time getting my brakes fully bleed. Since my last post, my caliper rebuild wen't well - which lead to some other work as well; new mc, a few new brake lines, new brake drums and shoes. And now the bleeding is giving me the most trouble.
I have about 1/2 pedal, which can be pumped 3-4 times to full. Pedal holds pressure and feels firm. I've been bleeding using a suction bleeder (on my 5th round). I bleed the master installed using the 2 person method.
rear brakes have been adjusted to just scraping. pedal and pushrod are set to spec.
do i just keep bleeding and bleeding? should i toss the suction bleeder and try another method? suggestions _________________ Squeeze the Lemon Out
71 Square
73 Super-Beetle-sold |
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Tram Samba Socialist
Joined: May 02, 2003 Posts: 22727 Location: Still Feelin' the Bern- Once you've felt it you can't un- feel it.
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Posted: Wed Aug 26, 2015 11:21 am Post subject: |
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Your rear brakes are out of adjustment. Make sure all 4 shoes are contacting the drum. _________________ Немає виправдання для війни! Я з Україною.
Bryan67 wrote: |
Just my hands. And a little lube. No tools. |
To best contact me, please use the EMAIL function in my profile |
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Air-Cooled Head Samba Member
Joined: October 15, 2002 Posts: 4070 Location: Chicago Suburbs
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Posted: Wed Aug 26, 2015 12:42 pm Post subject: Re: Brake Bleeding Issues!? |
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CLEMENTINE71 wrote: |
should i toss the suction bleeder and try another method? suggestions |
Well, I keep mine, hoping that some day, I'll find a use for it.
For me, nothing beats the 2 man method. In case you are only 1 man, gravity bleeding (crack the bleeder open, wait) works better than that thing, for me.
Actually, I use the hose & cup from the suction bleeder. The hose in the cap should be submerged in fluid at the bottom of the cup. Attach the other hose to the bleeder and open it a little. Gravity will let the fluid flow, pushing out the air.
I always LOCK the shoes against the drums for bleeding. _________________ Everything known to man has been written.
Readers are Leaders! |
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Clatter Samba Member
Joined: September 24, 2003 Posts: 7544 Location: Santa Cruz
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Posted: Wed Aug 26, 2015 1:36 pm Post subject: |
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Welcome to the club!
Some of us have never fully bled the brakes on our type 3s..
I hear a pressure bleeder works; only one I haven't tried yet.
So far 'bench bleeding' , two-man, suction, speed bleeders. and the 'submerged hose' method have all produced the same results as yours.
I think the pedal is just designed to go halfway down before it does anything. _________________ Bus Motor Build
What’s That Noise?!? |
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Tram Samba Socialist
Joined: May 02, 2003 Posts: 22727 Location: Still Feelin' the Bern- Once you've felt it you can't un- feel it.
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Posted: Wed Aug 26, 2015 2:27 pm Post subject: |
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OP, try this test: Pull your E brake all the way on and tell me if that makes a difference in the pedal. _________________ Немає виправдання для війни! Я з Україною.
Bryan67 wrote: |
Just my hands. And a little lube. No tools. |
To best contact me, please use the EMAIL function in my profile |
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grandpa pete Samba Member
Joined: July 06, 2008 Posts: 6426 Location: St. Petersburg, FL
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Bobnotch Samba Member
Joined: July 06, 2003 Posts: 22422 Location: Kimball, Mi
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Posted: Wed Aug 26, 2015 8:23 pm Post subject: |
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grandpa pete wrote: |
Find Bobnotch's beer and bleed ; gravity method . It saved me . |
I was going to suggest that. _________________ Bob 65 Notch S with Sunroof
71 Notch ...aka Krunchy; build pics here;
http://www.thesamba.com/vw/forum/viewtopic.php?t=249390 -been busy working
64 T-34 Ghia...aka Wolfie, under construction... http://www.thesamba.com/vw/forum/viewtopic.php?t=412120
Tram wrote: |
"Friends are God's way of apologizing for relatives." |
Tram wrote: |
People keep confusing "restored" and "restroyed". |
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Nate M. Samba Member
Joined: August 11, 2003 Posts: 1306 Location: Anacortes, WA U.S.A.
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Posted: Thu Aug 27, 2015 7:08 am Post subject: |
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Definitely ensure the rear brakes are adjusted (even temporarily tight) as Tram suggested. Gotta do that before ANY bleeding or you're wasting your time.
I use a power bleeder since I'm a one-man shop and can't afford to wait and drink beer like Bob. Even if you don't have a power bleeder I always recommend getting everything set-up and crack each line on the MC one at a time and let it gravity bleed a couple ounces of fluid out and re-tighten. The MC is really good a trapping air inside it and this simple trick usually purges it out and allows for a really good bleed of the system after.
The power bleeder works well, but it's a 50/50 shot whether or not it will seal to the MC reservoir. I don't know what it is about that little reservoir cap adapter, but my bleeder has a hard time sealing properly to the typical VW reservoir. My other power bleeder has the larger Bus & Porsche adapter on it and it never fails to seal well. . .
Another really good and cheap aid is the Lisle one-man-bleeder that's a tube that slips over the bleeder the goes into a 1 pint reservoir. Great product that works and cost only about $8-10 at FLAPS. I actually use this in conjunction with the power bleeder so I don't make a mess on the clients car or my floor.
I also like the speed bleeder bleed screws (try and say that fast). I've got these on the Squarsche and bleeding is a snap. Just crack one bleed screw, pump a few times and re-tighten. Really a great product!! _________________ Regards,
Nate M.
Squarsche build
Heavy Metal Affliction feature
For heaven's sake, put a type4 and a Porsche 5-speed in there. . . It's the right thing to do!! |
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CLEMENTINE71 Samba Member
Joined: May 29, 2014 Posts: 56 Location: Auburn CA
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Posted: Thu Aug 27, 2015 10:16 am Post subject: |
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Tram wrote: |
Your rear brakes are out of adjustment. Make sure all 4 shoes are contacting the drum. |
hel yes! Tram you were right on man! Rear brakes were way out of adjustment - a good 4-6 clicks off on the right and another 3-4 on the driver side. Shoes contacting is key
Pedal is nice and high! I've never looked forward to stop signs so much!
...live and learn
thnx guys! Tram I owe you a beer, _________________ Squeeze the Lemon Out
71 Square
73 Super-Beetle-sold |
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raygreenwood Samba Member
Joined: November 24, 2008 Posts: 21518 Location: Oklahoma City
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Posted: Thu Aug 27, 2015 11:06 am Post subject: |
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Nate M. wrote: |
Definitely ensure the rear brakes are adjusted (even temporarily tight) as Tram suggested. Gotta do that before ANY bleeding or you're wasting your time.
I also like the speed bleeder bleed screws (try and say that fast). I've got these on the Squarsche and bleeding is a snap. Just crack one bleed screw, pump a few times and re-tighten. Really a great product!! |
For reference:
The Speed bleeder site.
http://www.speedbleeder.com/
The identification and sizing page.
http://www.speedbleeder.com/size.htm
The front calipers I just built for my 412 take the same bleeder screw size at the 411 caliper...which takes the same size as the late type 3 caliper.
The SB7100 is the one for the front caliper (M7/1.0 and 35.15mm long)
The SB7100S means "short". It is 5mm shorter.. It works fine also but is a pain to atttach fluid lines to during bleeding because its so stubby and sits close to the caliper bolts.
The SB6100 (M6/1.0 and 28.8mm long) fits the rear wheel cylinder.
These are great products. Also the thread sealant appears to be improved on the new ones and does not get dissolved by some brake fluids.
Ray |
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