Wheel cylinder help

[88MONTESS]

Now I may not be the brightest mechanic in my town but I am pretty confident that I put my new wheel cylinders on correctly . It took me a while to get the shoes on correctly with all the different springs and what have you but the wheels cylinders seemed almost too easy. Just when I thought I was through I go to bleed them and nothing happens. I got just a little fluid through the bleeders and thats it. I took the drums off and the cylinders arent even moving when I pump on the pedal.

What did I do wrong???

 

[monte olrac]

did you fill the master with fluid

 

[88MONTESS]

Yep filled it with fresh fluid.

 

[79loserbluebu]

What are the wheel cylinders for and what year is your car? If you got the wheel cylinders from something older like a 79', they can have different threads and flares and definately not function right with the newer wheel cylinders. Check the lines to make sure that none of them are smashed?

 

[88MONTESS]

The parts are a direct replacement for my car and from what I observed while installing them all the flares and threads were pretty good. I inspected the lines they looked pretty good..

 

[billyjack]

Sounds to me like you have more bleeding to do before the job is done.
Bill

 

[Blammotor]

If you are bleeding the brakes manualy the two person method. The problem could be the that the combination valve mounted on the frame rail is closing because it thinks theres a leak in the rear lines. On the front of the valve there is a little pin that will pop out when you apply the the breaks if there is not enough pressure on the rear lines deverting the fluid to the front. You have to hold this pin in while you are pumping the break peddle. There is a tool to hold the pin in, The way I bled my rear breaks is using a hand operated vacume pump attached to the bleeder, It has a collection cup in line that you put a little fluid in to prevent air returning to the system on return stroke of the pump. With the vaccume method you are pulling the fluid through the system and the pin in the combination valve will stay in.(sorry abouth the spelling and other grammar)

 

[88MONTESS]

Ok so do I hold the pin in the entiree time I'm bleeding the brakes?

Or do I just hold it in while I'm pumping them?

After I'm done will the valve automatically let the fluid flow to the rear wheels?

 

[monte olrac]

i think it take 400lbs of pressure to reset that valve, so i would close your bleeder screwes and pump the $#!t out the pedal until it get sort of hard check the pin

 

[88MONTESS]

I checked the pin and it sticks out a bit. I tried to manually push it in(not a chance!)

Can I C-clamp it while I bleed the brakes?