Nope, if the bleeder is not at the top you can pump as much fluid through the
caliper as you want and the air bubble trapped at the top of the caliper will
stay there. The reason being is you have a relatively small volume of fluid
coming into a comparatively large reservoir and the velocity it is moving at
slows way down. If you are using a one way check valve to bleed the brakes the
fluid you are moving through the caliper will just go around the bubble and out
the bleeder. If you are pumping the brakes to build pressure than releasing it
the air bubble will just compress in the high spot in the caliper and expand
back again when the bleeder is opened. You can move an air bubble through the
lines because you have a relatively constant volume through the length of the
lines. With a check valve bleeder the air bubble is just carried along by the
fluid with a pumping bleed the air is compressed and allowed to expand in the
direction of the bleeder.
Eventually the air will rise to the highest point. But have you ever noticed
the controtions the lines goes through between the master cylinder and the
calipers/wheel cylinders ? An air bulb will rise up to a point that the line
makes a direction change down and sit there. The air will collect at each of
those little high points.
Dave Clement
99 SLT+ CC 4x4
In article <s062a6fb.060@mail.dhs.state.il.us>, DHSPA58@dhs.state.il.us ("BARRY
OLIVER") writes:
>
>
> er, hydraulic pressure from the fluid behind it?? If your assertion had
> any merit, you wouldn't ever have to bleed your brakes because the air
> would just rise to the M-C and things would be peachy... lol You did
> make me think for a second, tho..
>
> >>> ttroidl@bluefrognet.net 03/22/04 11:53AM >>>
>
> if the bleeder is on the BOTTOM how are you going to get the AIR OUT?
>
> the air comes out the TOP!
> Tony.
>
> www.helptonyout.com
>
> Hate SPAM?
> Try: www.friedspam.net
> ----- Original Message -----
> From: BARRY OLIVER <DHSPA58@dhs.state.il.us>
> To: <dakota-truck@dakota-truck.net>
> Sent: Monday, March 22, 2004 11:05 AM
> Subject: Re: DML: Gen III Front Calipers
>
>
> >
> > Is that a Joke? Like a metric crescent wrench or a quart of blinker
> > fluid? I just had my '99's brakes apart and that is wrong, it's not
> put
> > togeather like that. The bleeder goes down, the hose goes up. How
> > would he have enough slack in the brake lines to turn his wheels if
> it
> > attached on the bottom of the caliper? I think you just got stung by
> a
> > secret shopper or something.
> >
> > >>> SilverEightynine@aol.com 03/20/04 09:47AM >>>
> >
> > Had a customer come in with a 1999 Dakota (verified by VIN number and
>
> > build date on door sticker) looking for a drivers side replacement
> > caliper. They kept coming in (special order) as being the wrong
> > calipers. 98, 99, and 00 all show different caliper part numbers.
> When
> >
> > looking at his drivers side caliper piston oriented on the right side
>
> > (as is when installed on the truck) the bleeder screw was at the
> top
> > of
> > the caliper and the brake hose attatched at the bottom. The
> calipers
> > he
> > was getting were the opposite. Anyone confirm when Dodge started
> > messing with the calipers and what they did to them? I know they
> > changed
> > ball joints etc at some point and I remember people saying things
> about
> >
> > lift kits for Gen IIIs not working between older/newer Gen III
> trucks.
> >
> > I had the last two days off work so I probably won't know how this
> > guy's
> > problem turned out - but I was curious for my own knowledge.
> >
> > --
> > --------------------------------------------------------------
> > "Why don't you ask me what it feels like to be a freak?"
> >
> > Terrible Tom -- AIM & Yahoo Name: SilverEightynine
> >
> >
>
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