Vacuum pump brake bleeding questions..
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Freshman User
Joined: Jul 2006
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Vacuum pump brake bleeding questions..
i bought one of those hand squeezed mity vac brake bleeders and havent used it yet but according to the directions it says you start at the tire closest to the master cylinder which goes against every thing ive ever learned about brake bleeding. Is this the correct procedure? Anyone ever used one of these to bleed the brakes? If so which rubber adapter did you get the best seal out of..like i said i havent had a chance to use mine yet..but it came with 2 adapters that fit over the bleeder screw and several that look like long needles that are supposed to pushed in..is this in the brake bleeder or does it mean screw the bleeder completely out and insert in the hole?
pedant
Joined: Jan 2008
Posts: 23,576
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From: EXTREME southwest CT
It works because you're sucking fluid through the system instead of trying to push it.
The conical adapters are for other things, like sticking into a vacuum line to actuate a dashpot.
I never could get those adapters to seal well. Finally just found a piece of hose that fit tightly over the one that it came with, and fit over the bleeder too.
This is my adapter.
You may find a wrap or two of teflon tape on the bleeder nipple threads cuts down on sucking fine air bubbles into the hose.
Hope this helps.
The conical adapters are for other things, like sticking into a vacuum line to actuate a dashpot.
I never could get those adapters to seal well. Finally just found a piece of hose that fit tightly over the one that it came with, and fit over the bleeder too.
This is my adapter.
You may find a wrap or two of teflon tape on the bleeder nipple threads cuts down on sucking fine air bubbles into the hose.
Hope this helps.
