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How do I fabricate a power bleeder?

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Old 09-30-2003, 10:33 AM
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Rally Guy
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Question How do I fabricate a power bleeder?

Got a spare Master Cylinder cap from a dismantler yesterday (Porschapart, great place) and have a compressor.

How should I modify the cap to allow pressure bleeding? Just send me in the right direction if this has been covered before - not sure what to search on to find the right thread!

With EIGHT spots to bleed (more if I need to do the clutch at the same time (do I?)) I'd like to make this as easy as possible.

Thanks in advance,

RK
Old 09-30-2003, 10:54 AM
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Jonathan Martini
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It would probably be easier to just get the Motive Power Bleeder.

Forget the compressor. Go out and get a pressurized herbicide/pesticide dispensor. Looks like a plastic sealed tank with a hand pump for compression and a line that is usually attached to a sqeeze trigger.

You need to attach a line from the tank to the brake reservoir cap you bought. You also need to attach a pressure gauge to the tank if there isn't one already.

You're only talking about 18 psi or so as the max pressure you really want to use. A compressor sounds like overkill.

If you want to make this as easy as possible, get the motive power bleeder is my recommendation. For around $40 it is a nice tool to have and I've actually used it quite a bit.

Good luck
Old 09-30-2003, 10:56 AM
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Luis de Prat
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This is pretty cool:

http://www.bmw-m.net/TechProc/bleeder.htm
Old 09-30-2003, 12:25 PM
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pete944
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Paragon has the Motive Bleeder for around $40 or $45. It's cheap, it works perfectly, and they ship fast. Why go to the trouble of sourcing all the parts?
Old 09-30-2003, 01:12 PM
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SoCal Driver
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Originally posted by 944pete
Paragon has the Motive Bleeder for around $40 or $45. It's cheap, it works perfectly, and they ship fast. Why go to the trouble of sourcing all the parts?
Because we can.

Hobby car remember?
Old 09-30-2003, 02:13 PM
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Ag951
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If you do build your own, don't forget the pressure gauge. I can just imagine the mess that could cause...
Old 09-30-2003, 02:21 PM
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Rally Guy
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I have a hose pressure gauge on my compressor - so I can set it at 10-15 PSI - which people seem to suggest.

Seems no need for more than that?

But still hoping to hear about what bits are used to modify the cap.

And yes making one for cheap is more fun and better than the close to $100 CND I'd spend buying one.

Thanks,

RK
Old 09-30-2003, 09:08 PM
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aribop
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Good choice of information Luis. I made one following the instructions on that link and it works great! I can't believe I went all these years without it. And it was so easy to make.
Old 10-01-2003, 09:42 AM
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Luis de Prat
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Glad it worked for you! Fins aviat!
Old 10-01-2003, 11:27 AM
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instigator
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i made one exactly like that cost around $15 got my spayer from wall world



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