need BRAKE help fast!!

[Hottrucks]

ok heres a pic of what I have my truck has crap for breaks.....I have 2 thoughts

is my proptioning valve in correctly


are my brake lines crossed


my truck is a 70 drum drum truck


what happen is my line that cross's the X memember got a crack it drained the back of the master so I'm not sure whats going on ....I have pulled allt he drums and pads and drums are new

I need to attack this in the morning I need my truck tomorrow afternoon

Thanx
Jeff

[Hottrucks]

I have been looking at some other pics of brake set ups and it seem like most of the pics I see the wire for the light is on the top??

[Camaro_nut2001]

Here is my old setup and it worked great untill the booster went bad. My light wire plugs in the bottom. Hope this helps you.

[71meangreenc10]

can you get all the drums to bleed? If so make sure the rear brakes are properly adjusted, If you can pull the drum off the back with little force, you may need new adjusters, the back should have some drag to it.

If you cant get the front (or the one that bled back to the master) to bleed you may have to bench bleed the master to get the air out of it.

Smitty

[Hottrucks]

hey camaro nut your set up looks like mine but I think my proportioning vavle is backwards??? and which line goes to the rear......????

[Hottrucks]

smitty everything is new or cleaned..bleeding isn't an issue....I'm just not sure things are routed in the right directions??

[Chevydude56]

Were the brakes OK until the line leaked?
You need to replace/repair the line and bleed all the brakes.
Any air in the system will give you bad brakes.

You don't have a proportioning valve , you have a distribution block.

[Hottrucks]

the brake where...ok....I was never impressed with them ..I just added the booster set up and they didn't seem any better..I was thinking the booster is bad....

what I am sure of it that all the lines are new bleeding isn't an issue pad and drums are new and no leaks at the wheel cylinders

[oldblue1968chevy]

your 'block' 'valve' etc is upside down compared to my disc setup......

[Chevydude56]

Originally Posted by oldblue1968chevy

your 'block' 'valve' etc is upside down compared to my disc setup......

I have a drum brake '67 suburban and I am not impressed with the brakes either . I will be converting to front disc or 4 wheel disc.

Here is a picture of mine , I think the booster was added at some point.



second picture , closeup of distribution block, switch on bottom

Third pic is a drum brake without a booster, switch on bottom

Forth picture is disc brake truck with prop valve, switch on top.

[lolife99]

Your distibution block is backwards.

In your pic the back of the block needs to face the front of the truck.
Both front lines are towards the front of the truck.
(front bowl of M/C and front brake lines)

Both rear lines are towards the rear of the truck.
(rear bowl of M/C and rear brake lines)

[Hottrucks]

well I'm going to flip the block around and blead the lines again....Disc brakes are only a few months away then I'll be looking for a disc vavle

I'll keep you posted

[truckdude239]

on ym 71 the block vavkle is turned witht eh wire going up

[Diablo de la Noche]

I saw somewhere, on Speed TV or something, that when you put in a booster you need to change the pedal and rod. Something about a different size rod needed to operate the booster properly. If you didn't change that out when you added the booster, that might be why you don't get the full power from them.

[Hottrucks]

did the swap it was very easy..I swapped every thing including the rod....I'll be done in a coule hours and see what happens

[Longhorn321]

Is your concern that a front line was leaking and the rear resevoir was the one that went dry? That is normal I think. You get more pressure on the front that way.

[Hottrucks]

Originally Posted by Longhorn321

Is your concern that a front line was leaking and the rear resevoir was the one that went dry? That is normal I think. You get more pressure on the front that way.

Yep and that the "valve" /"block" is in correctly...I want more presure to tthe front it makefor better wheel stands!!!!

[Longhorn321]

Here is a pic of my '69 C20 Longhorn with Drum/Drum. It looks exactly like yours.

[Sinister]

If your master cylinder went dry you might need to bleed it again. You can do this on the truck, just unhook the lines and hook up the bleeding kit. Might want to tape or lightly clamp the bleed kit lines so they don't fall out of the reservoirs.

[Chevydude56]

Originally Posted by Diablo de la Noche

I saw somewhere, on Speed TV or something, that when you put in a booster you need to change the pedal and rod. Something about a different size rod needed to operate the booster properly. If you didn't change that out when you added the booster, that might be why you don't get the full power from them.

There should be two holes in the brake pedal arm for the rod. For power brakes the lower hole should be used. Upper hole for non power brakes

[Beuford]

I have a `70 drum n drum setup that I'm changing to front disc. My wire is on the bottom of the prop valve and since it was a 1 owner truck I believe that is how mine came from the factory.

[Hottrucks]

ok I blead everying out did some swapping and I think that they are as good as they are going to get I bought a use Booster from a board memeber and I'm pretty sure its FUBAR...but I will say they are 50% better and I think one more bleeding will help a tad more..

than Guys for the pics it helped alot..mine now looks like long horns and chevy dudes I believe that to bet he correct set up

[71 super]

distribution block is backwards fix that and you should have better brakes.

[69BB396]

I would agree. If you check your photo with Camaro-Nut's, the dist.block should have the mount bolt at the back. My '69 BB Chevy was the same.

RW
(Photo coming)

[69BB396]

Here's a picture of it...