68, No brakes

garryyjr · Posted: Mon Jun 06, 2011 8:32 pm Post subject: 68, No brakes

When I first bought the car, about a month ago, Reservoir was bone dry. I filled it, bled the system, worked great.

Week or so went by, noticed I was leaking fluid from the right rear wheel. Cylinder was leaking. Replaced all 4 and the rear shoes. I also replaced the hard lines in the rear. One was smashed, the other rounded off and stuck to the cylinder. Bled system again, adjusted brakes.

Pedal is still at the floor, Acting like when I first got it. I can slam the brakes hard, Just a very, VERY slow, slow down.

What would be the coincidence the MC would go out??

Or that I am leaving something out....?

cletus_zuber · Posted: Mon Jun 06, 2011 8:45 pm Post subject:

Do they pump up at all?
1.Bleed again, and again.
2. adjust, adjust, adjust, tight to the drum, good pedal? bleed.
3. replace rubber hoses
4. replace master cyl.

repeat 1 and 2
_________________
1972 1302
HPMX 40's & 019

garryyjr · Posted: Mon Jun 06, 2011 8:50 pm Post subject:

That much bleeding huh? It was tight to the drum...

I backed off a bit, You can still here a slight rub from shoe/drum.

JonF · Posted: Mon Jun 06, 2011 9:02 pm Post subject:

try bleeding the master 1st. have your helper pump the brakes and crack open the hard line on the top of the master. look for air bubbles coming out around the threads of the hard line. pump pump hold open the hard line then close it before the peddle is down all of the way. then start bleeding at the front drivers side wheel to help build up enough pressure in the system to move the air out of the back brakes.

if that dont work then it might be time to replace the master.

when bleeding the brakes use the old rubber hose in a jar method so you can see the air bubbles as they come out. forget anything anyone posts about gravity bleeding the brakes. all it is going to do is let more air into the system and leave you stuck with no brakes.
_________________
68 bug 1600sp 30/31
68 baja 1600sp 010 32ndix

cletus_zuber · Posted: Mon Jun 06, 2011 9:05 pm Post subject:

go tight to the drum, all four, check pedal. post back
_________________
1972 1302
HPMX 40's & 019

garryyjr · Posted: Mon Jun 06, 2011 9:10 pm Post subject:

cletus_zuber · Posted: Mon Jun 06, 2011 9:21 pm Post subject:

JonF · Posted: Tue Jun 07, 2011 12:06 am Post subject:

garryyjr · Posted: Tue Jun 07, 2011 6:58 am Post subject:

garryyjr · Posted: Tue Jun 07, 2011 7:44 am Post subject:

If there were air in the system, And I continue to pump the pedal.. Would it get stiff/harder?

It doesn't. Still to the floor.

dasdachshund · Posted: Tue Jun 07, 2011 3:24 pm Post subject:

Lettuce · Posted: Tue Jun 07, 2011 3:41 pm Post subject:

never let the pedal hit the floor or the seals inside th master cylinder may be damaged

garryyjr · Posted: Tue Jun 07, 2011 3:43 pm Post subject:

So only do 3/4 pumps and hold?

Lettuce · Posted: Tue Jun 07, 2011 3:46 pm Post subject:

you pump it until you get pressure and then hold and bleed the brakes. Just don;t let the pedal sink to the floor or the seals will go farther than they do under normal conditions and they may be damaged. Stuff a towel under the pedal or something

I would bleed the master and adjust the brakes so they are all in contact. Then bleed them

garryyjr · Posted: Tue Jun 07, 2011 3:50 pm Post subject:

Never knew that and I have done my fair share of brakes

JerryMCarter1 · Posted: Tue Jun 07, 2011 4:24 pm Post subject:

HAHAHAHA
I am laughing out of sympathy

I have been skunked on many a car until I figured out to push the fluid from the wheel cylinder to the mater cylinder.
You can rent a pressure pump for this,, like they have at all brake shops,, or you can buy one at harbor freight-- just like one of the posters suggested.

Life’s a real bitch until you get the bugs worked out!
_________________
Experience always triumphs over hearsay and You get to select which theory to believe

garryyjr · Posted: Tue Jun 07, 2011 4:28 pm Post subject:

My buddy is coming over tonight.. He has one

Mikedrevguy · Posted: Tue Jun 07, 2011 4:34 pm Post subject:

hope it all goes well.
_________________
74 1303 (RevBug): plan for German Look
76 914 with 2260
69 Bwajaja
"The wise speak because they have something to say; while the foolish speak because they have to say something." Plato

Illigitimi non-Carborundum!!

DeathTrap · Posted: Wed Jun 08, 2011 5:03 am Post subject:

After you are all done playing around, go out and adjust the brakes.

Adjust each shoe till it almost stops the wheel from turning.

Go pump the pedal(to recenter THAT shoe to the drum)

readjust that shoe again if it loosened at all

Now you can back that one shoe off a couple clicks (yes it still drags a lot)

Adjust the second shoe on that wheel. (it will now be difficult to to find the spot where the drag is substantial what with the drag from the other shoe, deal with it) at times it should almost be locked up and almost impossible to turn by hand.

Pump the pedal and readjust till it stays tight and then back it off a couple clicks. It will drag substantially but will loosen the first trip around the block.

Move on to wheel number 2 and do the same process.

About the time you get to the 3rd or 4th wheel you will see the pedal travel reduced.

When done (not even close) go drive around the block and do a few stops.

Jack it back up and do it again.

Do this as many times as it takes till the adjustment procedure become unnecessary.

when the pedal starts to get back down halfway to stop again do it again.

After a brake job or until the shoes seat in to the exact shape of the drum repeated adjustments will be required.

This might be

2 or more times first day
a week later

a couple weeks after that

and maybe each month after that

VW's were made without self adjusting brakes.

Deal with it! Adjust the brakes.

over and over again

If you drive hard and stop hard a lot, adjust them a lot.

do it get over it and move on

garryyjr · Posted: Wed Jun 08, 2011 7:54 am Post subject:


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