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Mastercool vacuum pump question

Boomer_106 on Sun November 11, 2007 10:40 AM User is offline

Hello, I have a model 90059 vacuum pump. The oil cap popped off and a spring and ball bearing flew out. I put it back in by putting the spring in first and then the ball. Is this correct? The cap holds on somewhat stable but, I think the part it slides down on might be missing a tit ( for lack of a better word). Is there alot of pressure on this cap when the pump is running? I'm wondering if I should try to find a replacement part. I'm not sure where I'd find that if needed.

Here are some pics of it.


Photo Sharing and Video Hosting at Photobucket

Photo Sharing and Video Hosting at Photobucket

Photo Sharing and Video Hosting at Photobucket

TRB on Sun November 11, 2007 6:34 PM User is offlineView users profile

Was there not a parts break down with your instructions? We can order any Mastercool item if we have their item number. I'll check Monday and see if we have a parts breakdown on these pumps.

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Boomer_106 on Mon November 12, 2007 3:22 AM User is offline

Hey TRB, no there wasn't a parts breakdown. Do you know if I have it put back together right? Is there pressure on the oil cap with the pump running?

JACK ADAMS on Mon November 12, 2007 10:29 AM User is offline

I just pulled one off the shelf and looked at it; the ball bearing goes in first and the spring. The cap holds pressure on the spring to the ball bearing. Yes it will have exhausted gasses that will move the ball up and down, which is why the spring must be in the middle. Hope this helps and good luck!

TRB on Mon November 12, 2007 10:50 AM User is offlineView users profile

Thanks Jack!

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When considering your next auto A/C purchase, please consider the site that supports you: ACkits.com
Contact: ACKits.com

NickD on Mon November 12, 2007 11:20 AM User is offline

See that Jack answered the question, a ball and spring is typically a check valve and the seat for the ball looks quite different than the seat for the spring, so normally not that difficult to figure out.

Ha, after looking at your photos, think I am way overdue to get my eyes checked. Better make an appointment. If using an auto digital camera, have to push the shutter button down half way until you get a beep or a visual signal, that is when focusing takes place, maybe you knew that, wife didn't until very recently.

Wet in Washington on Tue November 13, 2007 1:44 PM User is offline

Interesting, why would there be a check valve where you add oil to the pump? Maybe I need one of those for my vacuum pump.

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Never take life seriously. Nobody gets out alive anyway.

Edited: Tue November 13, 2007 at 1:50 PM by Wet in Washington

Boomer_106 on Tue November 13, 2007 4:01 PM User is offline

Ahh thanks for doing that Jack. Is it possible you can tell me how securely the oil cap holds onto there? I'm not sure whether everything is the way it's supposed to be or, if I need to try and replace that black piece that the cap fits onto. As Nick pointed out you can't tell much from the pics.

Nick, yes thanks I do realize you hold the button halfway. I expected the pics to come out better as well. I even retook them. The camera ordinarily takes real good pictures. Maybe trying to get upclose detail? Not sure but, I wish they had turned out better. I can give it another shot if it would help.

I"m just not sure how this thing is supposed to look. As I said the cap holds on somewhat but, it doesn't take a whole lot of force to get it off, that's for sure

JACK ADAMS on Tue November 13, 2007 4:16 PM User is offline

The cap is to be loosened when in use; this will allow venting from the pump to escape. When the pump is not in use or stored, you will need to make sure that vent cap is closed. If you should have any problems please contact one of our sales staff. Hope this helps and good luck!

Boomer_106 on Tue November 13, 2007 5:14 PM User is offline

Quote
Originally posted by: JACK ADAMS
The cap is to be loosened when in use; this will allow venting from the pump to escape. When the pump is not in use or stored, you will need to make sure that vent cap is closed. If you should have any problems please contact one of our sales staff. Hope this helps and good luck!

So you're saying that it's basically how it should be? The pressure isn't going to blow it off when the pump is running? As far as opened and closed, it doesn't screw on so I'm not sure how to make it opened or closed as you say. I have the ball in first and the spring so that the tapered smaller side is down against the ball. Is that part that the cap snaps down onto replaceable? If so how does it come out and, does ackits have a replacement piece? Finally do you think I need it? I mean I can get the cap to hold on even while I pull up lightly on it so, maybe it's ok.

JACK ADAMS on Tue November 13, 2007 5:27 PM User is offline

The Master-Cool pumps all have replacement parts, to a point that is….. Now you will have to take better pictures of what you are talking about for me to answer your question better. This is a valve that will vent exhausted gasses when in use. Do you have all the paper work that came with your pump? It should tell you how it should be when in use and when not in use.

TRB on Tue November 13, 2007 8:45 PM User is offlineView users profile

The Mastercool pumps we have in stock have a different breather system than what is pictured in these images.

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When considering your next auto A/C purchase, please consider the site that supports you: ACkits.com
Contact: ACKits.com

Wet in Washington on Wed November 14, 2007 4:20 AM User is offline

I don't understand. Why would a vacuum pump need a check valve where you add oil? Can someone enlighten me?

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Never take life seriously. Nobody gets out alive anyway.

iceman2555 on Wed November 14, 2007 9:39 AM User is offlineView users profile

Not quite sure about the valve on this unit..my units have a 'Gas Ballast' release valve that should be opened during the first part of the evacuation process. This enables the high concentrated gases produced during the initial vac process to be released and not result in a possible contamination of lubricants.
Since this may be an 'older' unit, it is quite possible that this valve in question accomplishes the same task. Since it is located on the lubricant reservoir...it simply may be a case of 'killing two birds with one stone'....it works as a release...but also access to the lubricant reservoir.
Best method to determine...simply read the instructions for that unit....it is surprising the info contained in these simple pages.

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