"If a little fountain of fluid squirts up out of the return port, there is still air."
That is true, but drum brakes that are not set up close enough also cause an extended return of fluid to the master cylinder after the pedal is released and the springs retract the shoes too far away from the drums, and the appearance is the same.
That is especially noticeable with an older, heavier vehicle with 4 large drum brakes.
Right now, I have a heavy 3/4 ton in the shop and we power-bled the snot out of it, and still had the large return of fluid.
Trouble was a stuck adjuster on the 13" drum brakes on the left rear wheel.
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Today's Featured Article - New Life for an Old Allis - by Tyler Woods. My friend Jon, has an old '39 Allis Chalmers B. He thought it a marginal tractor that had long since served its time. She smoked terribly and never had much power but he couldn't afford another so he was limping along with what he had. Jon's Allis has a small front loader and though it doesn't carry much, it serves his needs. It was the hard starting and low power that made him think it was time to replace the old girl. Jon called me to help him discover why his tractor wouldn't start
... [Read Article]
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