Brake Bleeding

bergfan · Posted: Wed Jan 23, 2008 5:01 pm Post subject:

Clearance between end of push rod and piston should be 1mm

m_lesney · Posted: Wed Feb 06, 2008 9:10 pm Post subject:

ok so I replaced the bushing to the m/c on my 66 all four wheel cylinders (with german) and shoes adjusted all the adjusters and tried to bleed. The rear had no fluid or air coming out the front has some air and fluid.I started with the furthest away and went clockwise and nothin. pedal goes strai to the floor? Any Ideas ? oh yea before i replaced the parts the brakes would work but the grommet around master leaked and one of the rear cyl leaked as well. any help would be greatly appreciated just spent the last 4 hours workin on it.

m_lesney · Posted: Thu Feb 07, 2008 8:10 pm Post subject:

any help guys?

bergfan · Posted: Thu Feb 07, 2008 9:37 pm Post subject:

What "bushing" in the master cylinder did you replace ?

m_lesney · Posted: Thu Feb 07, 2008 9:50 pm Post subject:

the one to the brake res

bergfan · Posted: Thu Feb 07, 2008 9:57 pm Post subject:

Do you mean the rubber grommet that the steel line pushs into

m_lesney · Posted: Thu Feb 07, 2008 10:06 pm Post subject:

bergfan · Posted: Thu Feb 07, 2008 10:20 pm Post subject:

Could be the wrong gromet and its blocking the port, is it the same shape and size as the one you took out ?

m_lesney · Posted: Thu Feb 07, 2008 10:37 pm Post subject:

hmm I actually never thought of that?

chiroracer · Posted: Tue Mar 11, 2008 10:09 pm Post subject:

I just spent the day chasing a brake bleed problem and it turned out to be the rubber lines had swelled from the inside they were ate german but probably og ,
_________________
2/1600 buggy Kreger chassis 4 baja 1000
71 911 track car
65 kombi EZ camper
69 class 11 racecar
70 class 11 prerunner

jasoncardenas21

I have a 69 bug and it has pretty much been sitting for 2 years now. The brakes did work alright and then 2 days ago I added Brake Fluid to the DRY reservoir and now they don't work at all. Does anyone have any suggestions?

Thanks in advance,
Jason

Russ Wolfe · Posted: Sun Mar 16, 2008 4:57 pm Post subject:

You probably have a leak someplace. If it lost the fluid while sitting.
Start by bleeding the brakes.
You are dual circuit, so start at the right front, and then the left front.
Right rear then the left rear.
You may have to go around several times before you get all the air out.
Then check for fluid leaks after you get pressure.
Dont drive the car until you find where that fluid went.
_________________
Society is like stew. If you don't keep it stirred up, you end up with a lot of scum on the top!--Edward Abbey

Gary: OK. Ima poop.

jasoncardenas21 · Posted: Tue Mar 18, 2008 11:42 am Post subject:

Thanks Russ, tonight I'm going to take it all apart and give it a good inspection. I'll let you know progress.

bruwick · Posted: Wed Apr 23, 2008 1:40 pm Post subject:

Had the same problem and I found that my master was leaking and the fluid was accumulating on the driver side floor! A real mess and a lot of wasted brake fluid. Good luck! Smile

_________________
'67
'78 Vert
'63 Single Cab
'74 Westy Weekender

Pharquarx · Posted: Sat Apr 26, 2008 10:20 pm Post subject:

Successfully finished bleeding the brakes on my 67 vert today and am good to go. Tried it about two weeks back when my daughter was here, we did this as a two person team but were not successful at that time. The pedal was still soft and we ran out of time for the weekend.

Today, I adjusted the brakes out to just dragging and went through the procedure as described, right rear, left rear, right front and left front. I did note that most of the air, actually a substantial amount was bled out of the front passenger side. My thoughts/observation is that this has the most rise of all of the brake lines and, I believe that with letting the car set for two weeks, that it was the most likely place for the remaining air to collect and as such, was easily discharged once we (daughter and I) went at bleeding the brakes again.

I'm not suggesting letting a car sit for two weeks between attempts, but it did cross my mind that by letting the car "set", even for say overnight, that residual air in the lines would rise to and accumulate to this high section and as such may give us a leg up on successful bleeding of the system. This may actually be true for each one of the lines as all of the air came right out on each of the legs. Took us about 50 minutes (we had to flag down the ice cream truck and took a break, hot here in Southern California today). Just a thought, I am good to go, will fire it up tomorrow and road test.
_________________
Charlie

Stock 67 Vert Under Restoration
1958 Lambretta TV175 Series 1
1957 Vespa Messerschmitt 150 GS
1951 Douglas Vespa Rod Type (First month of production!!!)
1970 Triumph T120R (Bonneville)
1950 Vincent Comet
1952 Moto Rumi Sport 125
1973 Ducati 750 Sport

bergfan · Posted: Sun Apr 27, 2008 10:19 pm Post subject:

I take it that it has a single circuit system ?

Pharquarx · Posted: Mon Apr 28, 2008 4:43 am Post subject:

67 = dual
_________________
Charlie

Stock 67 Vert Under Restoration
1958 Lambretta TV175 Series 1
1957 Vespa Messerschmitt 150 GS
1951 Douglas Vespa Rod Type (First month of production!!!)
1970 Triumph T120R (Bonneville)
1950 Vincent Comet
1952 Moto Rumi Sport 125
1973 Ducati 750 Sport

bergfan · Posted: Wed Apr 30, 2008 2:28 am Post subject:

We were a bit behind on this side of the world (NZ) our '67,s only had single, '69 i think for dual.

bruwick · Posted: Fri May 16, 2008 9:46 am Post subject:

Finally have brakes on my '67. It turns out that the rubber? flex lines in the back had collapsed. My recommendation is spend the little extra $ and replace them about every 2 years.
_________________
'67
'78 Vert
'63 Single Cab
'74 Westy Weekender

Raybo · Posted: Sun Jun 22, 2008 7:01 pm Post subject: 67 brake bleeding questions..

1st. In reading one of the previous posts, someone was having problems bleeding his brakes. Someone else asked if he was dealing with a single or a dual system, and that there was a different way of bleeding a dual system. What might the difference be? 2nd. Has anyone else ever had a situation where they were getting fluid to all but one brake location (drivers side rear). All other wheels will bleed fine. I can't seem to get fluid to this wheel.. Any hints?


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Brake Bleeding
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