Mity Vac II
Posted February 13, 2002 - 07:30 PM
After replacing my orignal pads with aftermarket EBS's, I found the brakes soft and in need of a good bleeding. The old fashioned way was not giving me the feel I desired until I used the Mity Vac II. The Front brake works like a charm but the rear is still soft.
The instruction that come with the pump are not clear on the PSI to use and if you should close the valve after so many seconds of vacume assist bleeding. Am I supposted to leave the Valve open and continue bleeding or am I supposted to close the valve and bleed like normal? The book is not very detailed.
Can anyone tell me there hints and tricks with the Mity Vac II?
Or am I stuck with spongy rear brakes?
Posted March 06, 2002 - 01:12 AM
The only way I could purge either of my brakes was to apply the mity vac get some vacuum and then pump the pedal or lever to get some fluid flow.
Posted March 06, 2002 - 04:13 AM
To test the connection, pump the vacuum up to the top of the scale. It should hold pressure easily. If it doesn't, check the connection and/or use a different connector until it can hold pressure for a reasonable time (~30 sec before you have to pump it again). Once you get the connector sorted out, keep the pressure up by pumping it every 30 sec or so and just crack open the bleed nipple a little at a time. Pumping the pedal/lever also helps. I pump the pedal/lever while watching the reservoir for bubbles. Once bubbles stop coming into the reservoir, then I start with the vacuum pumping/bleeding. Remember to keep an eye on the reservoir because that thing sucks it dry quickly.
Posted March 06, 2002 - 06:20 AM
Pump your brake and hold it down.
Pump it to the Max and just barely crack your bleed screw.
KEEP AN EYE ON YOUR FLUID LEVEL.
Replace your resevoir cap and bleed one more quick time.
My front and rear brake are now working awsome. I can now pull front brake stands with ease when the other WR's can't.