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Tool Pants · 10-16-2006, 05:58 PM

I did not invent this wheel, just improved on it a bit.

Saw something like this on a BMW site years ago, but they were using a rubber valve stem and then playing around with it so that it would seal when inserted in the hole drilled in the cap.

I had a metal valve stem laying around and just had to tighten the nut on the the back end of the stem, as a metal valve stem come with 2 rubber seals that seal off the hole you need to drill in the plastic cap for the valve. You also need to block off a small vent in the cap or you cannot pressurize the reservoir. I used a hot melt glue gun to close the vent.

You also need a regulator on the compressor to limit the PSI to about 20 or you can damage the reservoir. That is why Motive has a pressure gauge on the side.

10-16-2006, 05:58 PM	#11
Tool Pants Registered User Join Date: May 2002 Location: San Jose Posts: 1,889	I did not invent this wheel, just improved on it a bit. Saw something like this on a BMW site years ago, but they were using a rubber valve stem and then playing around with it so that it would seal when inserted in the hole drilled in the cap. I had a metal valve stem laying around and just had to tighten the nut on the the back end of the stem, as a metal valve stem come with 2 rubber seals that seal off the hole you need to drill in the plastic cap for the valve. You also need to block off a small vent in the cap or you cannot pressurize the reservoir. I used a hot melt glue gun to close the vent. You also need a regulator on the compressor to limit the PSI to about 20 or you can damage the reservoir. That is why Motive has a pressure gauge on the side.