Reverse bleeding pushes all the debris from the
wheel cylinder up into the master cylinder. This will be trouble in the
future..
The two person method works well but you must not
wait long between the pumping action at the master cylinder as any
bubble
in a hose will travel beyond the prior pumping
action rendering the bleed useless.
The best is the pressure bleed. A small pot is
filled with brake fluid and pressurized to 20 psi. The pot is connected to
the
master cylinder reservoir. When the bleeder valve
is opened at the wheel cylinder, the fluid is pushed out at a fast rate
allowing
all debris and air to escape. This is the de-facto
standard in the auto industry and commercial aircraft.
Robert
...
----- Original Message -----
Sent: Wednesday, January 09, 2013 9:44
AM
Subject: Fwd: [LML] Re: bleeding
brakes
What do you think
R
Begin forwarded message:
On a car I was taught these steps. It takes two people.
I cant tell you why this might work, I dont understand the workings of
the brake cylinders. But this method would push
the bubble in the opposite direction and involves
"closing" and pressurizing the brakes.
1: One person pumps the brakes to pressurize the system.
2: With the brakes held, the second person opens the zerk
and relieves the pressure, then immediately closes the zerk.
3: Release the brakes and add more fluid ass necessary
4: Repeat until the bubble is gone.