1117 Pressure Bleeder Project

Message

   I'll start it out with this pressure bleeder I made. It works on just about any car ot truck, and you can totally flush and bleed your brakes or clutch system in about 15 minutes, by yourself.
I used a Ace garden sprayer of a 2 quart capacity. Anything larger and you will have to use more brake fluid. This one works well with a one quart size brake fluid bottle, which is enough to flush and bleed just about any system. 
First I chopped the spray wand off close to the handle. Then in a three way block I installed a pressure gauge and two hose barbs. One hose barb goes to the hose I just chopped, and I ran another three foot section of clear tubing to the cap, from the other hose barb.
To attach the cap I used another hose barb and drilled a hole in the cap. I sandwiched two washers and two o-rings between the hose barb and pipe adapter, which is srcrewed on to the hose barb. You might have to use a different method to seal the hose barb to the cap. It needs to hold about 20 PSI of pressure. Basically whatever works for you here, is fine as long as it holds 20 PSI.
Once everthing is sealed pour the brake fluid in the container and pump the handle until you get to 15-20 PSI on the gauge. Start with the right rear and put a piece of clear tubing over the bleeder screw. Open the bleeder screw and watch the old fluid rush out. You can usually see the change in color, indicating that you have flushed the line clean with new fluid.
After the right rear proceed to the left rear, and then the right front, and finally the left front. Depending on the size of your brake system you shouldn't have to pump the bleeder to add pressure. A typical Datsun will only use about 5 PSI to do the whole car including the clutch. To clean up, use a half a bottle of denatured alcohol to flush out the brake fluid. 
After using this, I will never bleed my brakes the old fashioned way. It's also less hassle than the vacuum type bleeders, as you never need to worry about adding fluid. You can buy a pressure bleeder for about $50 and then each cap is about another $10-$15. I built this for about $30 dollars including the cap. To use on a different vehicle all that's required is to use a different cap, which can be purchased at almost any local autoparts store.

Author	Message
GTZilla Enthusiast Joined: 08 June 2003 Location: United States Posts: 288	Topic: Pressure Bleeder Project Posted: 23 November 2003 at 6:50pm
	I'll start it out with this pressure bleeder I made. It works on just about any car ot truck, and you can totally flush and bleed your brakes or clutch system in about 15 minutes, by yourself. I used a Ace garden sprayer of a 2 quart capacity. Anything larger and you will have to use more brake fluid. This one works well with a one quart size brake fluid bottle, which is enough to flush and bleed just about any system. First I chopped the spray wand off close to the handle. Then in a three way block I installed a pressure gauge and two hose barbs. One hose barb goes to the hose I just chopped, and I ran another three foot section of clear tubing to the cap, from the other hose barb. To attach the cap I used another hose barb and drilled a hole in the cap. I sandwiched two washers and two o-rings between the hose barb and pipe adapter, which is srcrewed on to the hose barb. You might have to use a different method to seal the hose barb to the cap. It needs to hold about 20 PSI of pressure. Basically whatever works for you here, is fine as long as it holds 20 PSI. Once everthing is sealed pour the brake fluid in the container and pump the handle until you get to 15-20 PSI on the gauge. Start with the right rear and put a piece of clear tubing over the bleeder screw. Open the bleeder screw and watch the old fluid rush out. You can usually see the change in color, indicating that you have flushed the line clean with new fluid. After the right rear proceed to the left rear, and then the right front, and finally the left front. Depending on the size of your brake system you shouldn't have to pump the bleeder to add pressure. A typical Datsun will only use about 5 PSI to do the whole car including the clutch. To clean up, use a half a bottle of denatured alcohol to flush out the brake fluid. After using this, I will never bleed my brakes the old fashioned way. It's also less hassle than the vacuum type bleeders, as you never need to worry about adding fluid. You can buy a pressure bleeder for about $50 and then each cap is about another $10-$15. I built this for about $30 dollars including the cap. To use on a different vehicle all that's required is to use a different cap, which can be purchased at almost any local autoparts store.
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Bre620 Enthusiast Joined: 04 December 2002 Posts: 676	Posted: 23 November 2003 at 7:49pm
	Very nice!
	1969 510 1972 510 1969 L521 1979 620 4x4
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Bleach Guru Joined: 04 December 2002 Location: United States Posts: 4806	Posted: 24 November 2003 at 9:35am
	With a new master cylinder, does that do the job of bench bleeding the master as well?
	Ratsun.net
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GTZilla Enthusiast Joined: 08 June 2003 Location: United States Posts: 288	Posted: 24 November 2003 at 9:53am
	*Originally posted by Bleach* With a new master cylinder, does that do the job of bench bleeding the master as well? Yes it should, though I've never tried it. It should force the air right through.
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