DIY Pressure Bleeder

[usury]

Today I discovered some of my 944 photos from around 20 years ago. This was my makeshift brake/clutch pressure bleeder. It consists of a bicycle inner tube and bicycle air pump. I'm pretty sure I was attempting to bleed the clutch. I'm pretty sure it worked.

I was also younger and didn't want to spend money on too many tools.

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[danmartinic]

The end didn't pop off the reservoir? How did you know what psi you were building up?!

Actually, I did something similar with my rad a few years back.. I used a bike tube and pump to test for leaks in a bathtub after tightening the end caps

[usury]

I remember it popping off. I think I eventually realized I could use a zip tie. As for psi, never had a clue.

[dr bob]

A couple decades ago I made my own DIY pressure bleeder using a locally-available garden sprayer, some hose and connectors, and a spare ATE MC cap. The attached PDF instruction was targeted at/written for the 928 group at the time, but since the cap is common to many German cars with ATE hydraulics, the instructions are actually suitable for that broader audience. My home "library" of modified caps now has examples for all the cars in the current collection, including the Japanese DD's.

Bleeder Instructions 3.pdf

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ATECAP.pdf

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I "improved" the setup some ten years later after the original plastic sprayer hose deteriorated from the brake fluid exposure. Purchasers of early Motiv bleeders discovered (!!!) a similar weakness there, stimulating the change to mine. Some coiled poly compressed-air tubing did the trick with a couple more fittings. The nipple on the bottle is now actually tapped for that 1/4" NPT threaded fitting. Downside is that you can't see fluid in the hose anymore.

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Fitting Detail:

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Enjoy!