 Can't keep vaccum with MPS |
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| r3dplanet |
 Mar 4 2013, 12:23 PM
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Senior Member  Group: Members Posts: 679 Joined: 3-September 05 From: Portland, Oregon Member No.: 4,741 Region Association: None  |
Over the weekend I disassembled, cleaned, and re-assembled by MPS (022 906 051 E) with the new diaphragm rebuilt kit. When I use my Mityvac vacuum tester and draw to 15psi, the the MPS holds a vacuum for only thirty seconds.
The new diaphragm kit is installed correctly, the new rubber seals are happy. Everything looks clean an correct. I have also used a couple of different aneroid cells. I thought about pumping a little air into it and then placing the MPS into water to look for bubbles, but I figured that would probably be a bad idea. Is there some clever way I can test to find out where/how this is losing its vacuum so quickly? Thanks, Marcus |
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Posts in this topic
r3dplanet Can't keep vaccum with MPS Mar 4 2013, 12:23 PM
Jeff Bowlsby Did you use a heavy-bodied grease between all mati... Mar 4 2013, 02:03 PM r3dplanet By heavy bodied grease do you mean non-petroleum g... Mar 4 2013, 02:26 PM bulitt Call Chris at Tangerine Racing, I'm sure he ca... Mar 4 2013, 02:41 PM Racer Chris Did you test the mity vac to make sure it isn... Mar 4 2013, 03:25 PM r3dplanet Yes. I can connect the mityvac to other items and ... Mar 4 2013, 03:48 PM Racer Chris I've never felt the need for any grease or oth... Mar 4 2013, 04:55 PM
r3dplanet It's possible. But I didn't re-assemble it... Mar 4 2013, 05:01 PM Racer Chris It should be safe to pressurize the unit to no mor... Mar 4 2013, 07:51 PM scott_in_nh
It should be safe to pressurize the unit to no mo... Mar 4 2013, 08:00 PM bulitt Put some dish soap in a spray bottle with water an... Mar 4 2013, 08:01 PM r3dplanet When immersed in water I see a bubble or two when ... Mar 4 2013, 09:18 PM 76-914 This is how I tested one. http://www.914world.com... Mar 5 2013, 10:02 AM r3dplanet Well, problem solved. But it's really inelegan... Mar 6 2013, 01:10 AM Jeff Bowlsby Using a grease to seal vacuum leaks at the critica... Mar 6 2013, 09:42 AM  |
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