I have rear drum brakes and im not completely sure on how to do the brake on our trucks also the wheel cylinder went out any how toos on how to do the brakes and to make sure they are blead correctly?? please :ugh:
I might suggest a pressure bleeder if you have an empty system.
A pressure bleeder is a pressurized tank connected to the master cylinder. Then following the wheel sequence listed above, open one bleeder at at time and the pressure will push the fluid through. You're going to be there a very long time filling the entire system one brake push at a time.
You also have to check the pressure canister from time to time and refill as necessary.
The pressure bleeder is a bit spendy, but if time is worth money, it will be money well spent.
In addition to that, the master cylinder may need to be bled independently.
Can I ask what makes you think the system is low? And if it is indeed low, what caused that?