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bl5211a Member
Joined: Dec 28, 2006 Posts: 344 Location: NC
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Posted: Thu May 29, 2014 6:57 pm Post subject: m170 Bleeding Brakes |
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hello, I put all new brake lines, and rebuilt master cylinder and wheel cylinders.
Put brake fluid in master cylinder, but cant pump fluid into lines? I opened farthest line to bleed, but i can just keep opening , pump , close, release , and open, etc
Any suggestions on how i can push the fluid to the wheel cylinders?
Brian _________________ Brian
1955 M170
1940 BSA M20 |
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M606BR Member
Joined: Dec 09, 2013 Posts: 30 Location: Rio de Janeiro, Brazil
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bl5211a Member
Joined: Dec 28, 2006 Posts: 344 Location: NC
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Posted: Thu May 29, 2014 9:58 pm Post subject: |
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is there a pressure bleeder that fits the m38a1/ m170 master cylinder? _________________ Brian
1955 M170
1940 BSA M20 |
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bl5211a Member
Joined: Dec 28, 2006 Posts: 344 Location: NC
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Posted: Fri May 30, 2014 12:38 pm Post subject: |
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I did not bench bleed, is there another way now that it is in jeep, or do i need to remove the master cylinder ? _________________ Brian
1955 M170
1940 BSA M20 |
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M606BR Member
Joined: Dec 09, 2013 Posts: 30 Location: Rio de Janeiro, Brazil
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Posted: Fri May 30, 2014 9:43 pm Post subject: |
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You can do without removing it. You will need to disconnect both brake lines from master cylinder and connect 2 small pieces of tube bent upward, both going into the opening of the master cylinder. Then start pumping. While you pump, you will see brake fluid going back to master cylinder. Keep pumping until you see no bubbles going back to master cylinder. Then you will disconnect those small pieces of tube and reconnect the brake lines. Afterwards you will need to bleed the wheel cylinders again.
Hope it helps. _________________ Luiz Felipe Santos
1952 M38
1965 M606 |
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bl5211a Member
Joined: Dec 28, 2006 Posts: 344 Location: NC
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Posted: Sat May 31, 2014 10:06 am Post subject: |
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Thanks for the help.
Here is what i did and it worked well.
I removed the small pipe-plug from the Master cylinder lid. I set my compressor to 8 PSI
I cracked the farthest wheel end
Pressurized the master cylinder and waited until system pushed fluid to end.
Checked level and filled.
Then did the remaining wheel ends. Brakes are solid as a rock. Also note, I used Dot 5 and had no sponginess, brakes system is hard and works extremely well.
Brian _________________ Brian
1955 M170
1940 BSA M20 |
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M606BR Member
Joined: Dec 09, 2013 Posts: 30 Location: Rio de Janeiro, Brazil
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Posted: Sat May 31, 2014 4:48 pm Post subject: |
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Brian,
It's good to hear that. You have found an easier way to do it.
I changed all brake lines and wheel cylinders in my M606 a couple of years ago. After the changing, the brakes are working very well and the system is finally reliable.
DOT 5 fluid is hard to find around here. So I use DOT 5.1 fluid which is a higher performance and less hygroscopic fluid than DOT 4. _________________ Luiz Felipe Santos
1952 M38
1965 M606 |
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wesk Site Administrator
Joined: Apr 04, 2005 Posts: 16263 Location: Wisconsin
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artificer Member
Joined: Feb 16, 2007 Posts: 206 Location: Gold Coast Australia
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Posted: Sun Jun 01, 2014 2:16 pm Post subject: |
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I have never experienced aeration problems with DOT 5 & use it on every rebuild.
Vacuum bleeding helps rather than pumping the pedal.
Here is a good cheap simple brake bleeder.
_________________ John GIBBINS
ASE Master Medium/Heavy Truck & Auto Technician 2002 USA
Licensed Motor Mechanic NSW # MVIC 49593 Current
YOU CAN'T TROUBLESHOOT WHAT YOU DON'T UNDERSTAND |
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wesk Site Administrator
Joined: Apr 04, 2005 Posts: 16263 Location: Wisconsin
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