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I think I figured out why so many were having problems with the unit not working after a rebuild. It took me 3 times of removing and installing to find the problem. And it was a very simple one at that.
View attachment 674847 View attachment 674848
When I rebuilt the unit, I turned it upside down in my vice to hold it while I disassembled everything. After the air chamber is out of the way, you have to unscrew the cylinder, part #3, that has the packing in it. I didn't realize it but there is a ball check, part #41, that is in the pickup, part #39, with the screen in it. When you remove the part #3 with the packing, that ball will fall out of the pickup if you have the unit upside down like I did. It will actually end up inside of part #43 and it won't pickup any fluid after putting it back together and in the truck. So remove the pickup, part #39 and ball #41, and reinstall them AFTER you have the packing and housing put in. This assures that the ball is where it is supposed to be.
I just ordered these parts as my pump is flat out puking out of the vent. Never did a rebuild like this, but with all the info here seems pretty do-able.
Any more specifics on the "in line lubricator" ?Thanks for all the information on this thread! I'll be posting photos when the replacement part are installed, it won't be for a while since mine really isn't that bad.
Forgot to mention that Terry at SPX said. It is recommended that a in-line lubricator be installed. I thought that I would replace my compression air fitting at the unit with a Push-Loc air connector so I can add a few drops of lubricant once in a while to help with the wear of the seals.
It is called a mister. We use them on the CAT 7155 transmissions to keep the Orings in the transmission moist so the air doesn't eat them. Around $150 on ebay. You would need to know the scfm rate and the port side you would need in order to find the correct unit.Any more specifics on the "in line lubricator" ?
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