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Try this... With the truck turned off, pump the brakes to build up pressure and make the pedal really tough to push. Once it get tough, hold the brake pedal down and turn the truck on. If the brake goes to the ground, then your brake booster is fine.
Nope. That's how I usually do it.Is there a reason as to why you can't bleed a new master cylinder while it's on the truck? It would save my hands from getting sore from pushing on a dayum dowel for 30 minutes solid.
Usually. Just so as you get the big bubbles out. Slow and easy. Fast pumps cause tiny bubbles. After you bleed the MC open the rr bleeder and gravity bleed it for a few and then do the others.It should only take 4-5 pumps when it's on the bench in a vise... Your bleeding it correctly right?
It should only take 4-5 pumps when it's on the bench in a vise... Your bleeding it correctly right?
Update: I put a reman master on.....that didn't help. I put a new one on and it didn't help either. While coming to a stop if you pump pump pump rapidly the brake pedal gets hard as steel and won't stop the truck until the pressure bleeds off the pedal (within 4-5 seconds).
I didn't get a chance to bleed the air out of the brake lines yet seeing that 3 of the 4 air bleeders broke off! That's going to be fun to fix :doh:
I took the rear hubs off and all looked well in the rear. Other then the adjuster is seized up.
if you get a few full pumps on the brakes the vac will not keep up , i would say the rear brakes are out of adjustment or drums and/or shoes are worn out. my 2 cents