no brakes at all

[Bambino]

ive changed out all my wheel cylinder, in all 4 drums, and I've bleed the brakes for the 5th time and I got nothing yet... I need help plz

[Eagle_Adam]

have you bled the master cylinder and do you have a FSM?

[Bambino]

no I haven't bled that master cylinder.. and not sure what the fsm is??..

[Bambino]

im only 19.. it's my first car, my uncle had it sitting for 8 years.. and I brought it back to life. runs great. better than before, it's just the brakes stopping me from driving it everyday.

[Eagle_Adam]

ok, here is your break from someone who was a noob not to long ago.

 

FSM = Factory Service Manual

 

Post some pics of your truck - everybody likes to see what your working on and sometimes can point out issues just by looking

 

Do you have any repair manuals?

[banzai510(hainz)]

OK put your finger on the hole in the master cylinder and have soembody pump the master up . hopfully it will shoot soem fluid UP at you.

Then if it does try going to the wheel cyl and see if it starts comming out there.

 

 

If Not, the master could have gone bad as you one pushes the Master in theres a ridge inside that breaks the O ring or seal cause your were pushing the pedal all the way to the floor past the rideg in side the master cly bore thus ripping the seal

With all wheel cyl closed and fluid in Master when you push the pedal do you see tiny air bubbles come up in the resivoir ? If yes then its Bad I would say.

 

 

 

 

ck inside the cab to see if leaky from inside?????

If was dry it could have cracked a seal ?

 

 

I have never bleed a maaster cylinder in 25 years of owning a Datsun myself

[Bambino]

ok, here is your break from someone who was a noob not to long ago.

 

FSM = Factory Service Manual

 

Post some pics of your truck - everybody likes to see what your working on and sometimes can point out issues just by looking

 

Do you have any repair manuals?

 

yeah I got one

[flatcat19]

Suspect master cylinder.

Diag it as Hainz suggests.

[Eagle_Adam]

I have never bleed a maaster cylinder in 25 years of owning a Datsun myself

 

Ive done it on the last few ive worked on and its made a hell of a difference O_o

 

yeah I got one

 

Chilton or haynes - not that it matters

[datzenmike]

ive changed out all my wheel cylinder, in all 4 drums, and I've bleed the brakes for the 5th time and I got nothing yet... I need help plz

 

 

Got nothing? What does this mean? You still have no brakes or no fluid is coming out?

 

You only changed the wheel cylinders so you don't need to bench bleed the master. Well as long as it hasn't gone dry.

 

Keep the master full of fluid, open the bleeder rear right side, have someone push the peddle down, close bleeder, raise peddle... repeat until fluid pushes all the air out and only clear fluid squirts. It may take 7-8 pumps to fill the wheel cylinder and the line to it. Now the left rear, right front and left front.

 

Be sure to adjust the brake shoes to the drums to reduce travel.

[Bambino]

I got Haynes

[Bambino]

yeah.. we done that mike. but it doesn't seem to work. I've the shoes adjusted all the way to the drums thinking that'll help but still doesn't work.

[datzenmike]

OK then loosen the front line coming out of the master and have someone depress the peddle... fluid should seep out if it's actually moving

[ggzilla]

+1. Even if the brakes are not adjusted (or even missing), Mikes test will show if the Master Cylinder is working or not. Sometimes even rebuilt units are bad right out of the box.

[rayven14]

Im keeping a close eye on this forum, I'm having the same problem. I got brand new front and rear calipers, brake booster and new master and still I got crap!!! nothing!!! zilch!!! zero!!!! nada!!!!

 

Im gonna try to bleed the system AGAIN!!!! and see what happens. Its days like this that I wanna ditch the whole freakin project.

[ggzilla]

First bleed the master cylinder.

[rayven14]

I've bled that damn thing more times than I care to think about. got nice clean fluid coming from all wheel cylinders but still ... nothing. My only guess is that I have a major air pocket in on of em.

[ggzilla]

Good, fluid comes out of the wheel cylinders when you pump the pedal. That's very good.

 

Now you need to adjust the master cylinder pushrod, per the repair manual instructions and she'll work correctly.

[rayven14]

:confused: Dude... What!?!?!!?!?!?

[rayven14]

Can I get an OIC, I have a repair manual but it doesnt go over that part of the equation.

[banzai510(hainz)]

Do what GGZilla said and see what that does

 

However, You never anwsered in post 6 .

 

With all wheel cyl closed and fluid in Master when you push the pedal do you see tiny air bubbles come up in the resivoir ? If yes then its Bad I would say.

 

Im just saying with not resisitance the master might be able to push fluid with bleed open . But closed it might not.

 

This happen to me after WHEEL CYLINDER CHANGE. MASTER went bad trying to bleed it.

 

can buy a couple and keep as a sparee

http://www.rockauto.com/catalog/raframecatalog.php

[ggzilla]

Different guy, different problem. rayven14

 

Bambino is the original poster.

[rayven14]

I feel like Im thread jacking but I guess since its all relative information ...its ok.

 

I get some pressure but the pedal still goes down all the way, not quite to the floor but close.

[banzai510(hainz)]

Yes still awsering Babino

 

Im keeping a close eye on this forum, I'm having the same problem. I got brand new front and rear calipers, brake booster and new master and still I got crap!!! nothing!!! zilch!!! zero!!!! nada!!!!

 

If Rayven

You need to be spefic on wht you got on the 510 esp if you got rear disc installed as depedning on kit you can mount them upper or lower and have to bleed them correctly.

Also you got power brake master cylinder?

[rayven14]

Okay...

 

I got Chevy Corvette Calipers on the front with top mounted bleeders

 

Nissan 280zx calipers on the rear that also have top mount bleeders

 

as well as the power brake master cylinder, I believe my application (while new) came from the B210 not sure what year

 

I have bled both the master cylinder (three times) and all four corners twice, I do have some resistance in the pedal but again the pedal still goes near the floor when I push it. As a side note it used to hit the floor, now it just comes close.

 

Anybody wanna buy a 73 wagon? Im kidding unless I can get this crap figured out.