How to fix PowerBuilt vacuum pump ?
Thread Starter
Race Director
Joined: Apr 2000
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From: Who says "Nothing is impossible" ? I've been doing nothing for years.
How to fix PowerBuilt vacuum pump ?
Was bleeding my brakes and I guess I got some brake fluid in the pump itself. That POS little plastic jar that is supposed to hold the fluid so nothing will get into the pump won't hold any vacuum so it is useless.
Anyhoo, anyone know how to take one of these apart and get it so it works again ?
Or maybe you don't even have to take it apart I don't know
http://goshopping.thestar.com/shop/p...d_1849742.html
Anyhoo, anyone know how to take one of these apart and get it so it works again ?
Or maybe you don't even have to take it apart I don't know
http://goshopping.thestar.com/shop/p...d_1849742.html
Last edited by MotorHead; Nov 8, 2009 at 04:32 PM.
Race Director
Joined: Sep 2004
Posts: 11,874
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From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
mine was the mityvac pump and the same thing happened.....they have a rebuild kit and it was an easy repair and it now works great
Thread Starter
Race Director
Joined: Apr 2000
Posts: 17,676
Likes: 201
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
Le Mans Master
Joined: Jan 2004
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St. Jude Donor '14
I had 2 issues with mine.
#1- There is a flat o-ring around the lid of the jar. The brake fluid caused it to swell so the diameter was bigger than it should have been. I just snipped it and stuck it back in so it overlapped itself a bit, and put it back together.
#2- I took apart the cylinder and put vaseline on the piston ring because it would not seal. That didn't do it. Still would not seal. So, I put a layer of tape in the ring slot, put the ring back on, and it held vacuum all night. Like 8 hours all night.Even a rubber band under the ring would probably do it.
#1- There is a flat o-ring around the lid of the jar. The brake fluid caused it to swell so the diameter was bigger than it should have been. I just snipped it and stuck it back in so it overlapped itself a bit, and put it back together.
#2- I took apart the cylinder and put vaseline on the piston ring because it would not seal. That didn't do it. Still would not seal. So, I put a layer of tape in the ring slot, put the ring back on, and it held vacuum all night. Like 8 hours all night.Even a rubber band under the ring would probably do it.
