Depress portioning valve while bleeding?

6SENSE

Member
Joined
Jun 3, 2001
I never heard this before, or did it before, but I recently read in two books that you are suposed to depress the spring-loaded plunger on the front of the proportioning valve while bleeding. Is this true? Is it necessary?
 
Yes you are supposed to push the plunger for bleeding.

I believe all it does is cut down on the time necessary to bleed.

I have bled them successfully both ways.
 
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