RE: [DML] Re: Vacuum brake bleeding kits

["Marc A. Levy" <malevy@xxxx>]

The hand vac pumps do not work all that well. There is a compressor powered version that I have used (I do not own it) that does work very well. Thehand pump does not create enough suction to do the job.

Also, The process described below would seem to just get the air out of the last inch or so of line. If you are pulling the fluid back in from the jar, then you are not forcing fresh fluid from the master cyliner. No only are you not "changing" the fluid (which you should do!), but any air trapped further up the system will not be removed.


> -----Original Message-----
> From: dmcman82 [mailto:dmcman73@xxxx]
> Sent: Sunday, April 14, 2002 10:15 AM
> To: dmcnews@xxxxxxxxxxxxxxx
> Subject: [DML] Re: Vacuum brake bleeding kits
> 
> 
> I've used them before and they generally work well. I still favor a 
> cheaper one man bleed technique which consists of a glass jar, some 
> length of rubber tubing and brake fluid. One end of the rubber tube 
> is fitted over the bleed screw and the other end is inserted into 
> the glass jar that is filled half way with brake fluid. Open up the 
> bleed screw, get in the car and slowly pump the brakes. As you press 
> down on the peddle, air and fluid is expelled into teh jar, as you 
> lift off the peddle brake fluid (not air) is drawn into the caliper. 
> After doing it a few times close the bleed screw and move to the 
> next one. I try to get someone to help me just to watch the jar for 
> bubbles. I tell them to let me know when the bubbles stop as I press 
> the peddle and then I close up the bleed screw.
> 
> There is a method to bleeding the brakes though, like bleed the 
> front left then move to the rear right and so on (not the exact way) 
> I can't remember the sequence and I'll have to look it up...maybe 
> someone on this list knows? It may not be important to follow but I 
> try to follow it when I need to do it.
> 
> Steve
> 
> --- In dmcnews@xxxx, "Hank Eskin" <heskin@xxxx> wrote:
> > 
> > Hello All,
> > 
> > I need to bleed my brakes, and today I picked up a $25 vacuum
> > pump/one-person-brake-bleeding kit at Autozone. What are peoples' 
> opinions
> > about these type of kits, do they do the same job as a traditional 
> two-man
> > brake bleeding procedure, and is there anything I should look out 
> for when
> > using this kit?
> > 
> > Thanks,
> > 
> > -Hank Eskin #1619
> 
> 
> 
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