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Old 03-27-2008, 07:50 PM   #1
nofate OP
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grease guns

I am getting pretty frustrated using hand pump grease guns. Just when you get under a machine to grease some difficult to reach fitting the gun looses its prime and you gotta pull the plunger back, unscrew the cap and smear a big gob of grease from another cartridge into the small void that caused the gun not to pump anymore.

Am I doing something wrong in the loading of the cartridges or in using the gun? I've tried different brands of grease and even bought a new Lincoln grease gun, but the problem crops up on almost every cartridge I use. Is this just how these grease guns work or can I do something different to prevent this from happening. Thanks for your advice.
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Old 03-27-2008, 07:59 PM   #2
Trl Rdr
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Did you load the cartridge properly? http://plews-edelmann.com/downloads/...older=brochure and use the blead valve to remove excess air?
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Trl Rdr screwed with this post 03-27-2008 at 08:09 PM
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Old 03-27-2008, 08:12 PM   #3
nofate OP
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Quote:
Originally Posted by Trl Rdr
Did you load the cartridge properly? http://plews-edelmann.com/downloads/...older=brochure and use the blead valve to remove excess air?
Thanks for the informative link. My problem is definitely air in the cap area, but when I try to loosen the cap enough to get rid of the void the cap usually comes off and the cartridge pops out and makes a big mess. I'll just have to practice this technique some more I guess. I feel a bit silly asking about what should be a basic proceedure, but it has caused me some frustration.
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Old 03-27-2008, 08:18 PM   #4
Trl Rdr
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I was trying to locate a picture for the lincoln grease gun. Does it have a bleed valve? it may look like a big grease zirk with a ball in the center. You should not have to unscrew the head & make a big mess.
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Old 03-27-2008, 09:54 PM   #5
GreaseMonkey
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unscrew the cap and smear a big gob of grease from another cartridge into the small void that caused the gun not to pump anymore.


It sounds like the plunger is not pushing up like it should, that is the only way you can get air in there, or else you may have some hardened grease in it somewhere.

If you can disassemble the head and clean it, try that otherwise remve the head, wipe clean as best you can, then let it soak in a coffee can of gas for a few days. I had a gun once that had a check ball hang up due to hardened grease and it would do the same thing. After about 4 years I got tired of it and took it apart and cleaned it, which solved the problem forev e and ever. Took about 20 minutes to do.
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Old 03-28-2008, 04:45 AM   #6
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Make sure the plunger rubber is installed correctly for cartridge type feeding. If it's upside, down in the position for bulk feeding it won't work properly.

When you install a new cartridge, wipe a film around the inside of the cardbord tube at the bottom. Only turn the cartridge housing on to the head by a couple of turns, then let the plunger snap closed. Finally, screw the housing in the rest of the way. That should give you an initial prime.

Clean the rubber plunger often.

If it's cold out, find a way to pre warm the grease like leaving the gun on the floor of a truck by the heater.

Store the tubes with the peel off tops, down. For some reason this seems to help.

I use either the Lincoln pistol grip or Ingersoll-Rand pistol grip guns, they seem to work the best. Only get the best models available.

Shell grease seems to work really well for me. It feeds nice and is very high quality.

If you do alot of greasing, invest in the Lincoln cordless gun. It's a very nice tool that saves a ton of time.
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Old 03-28-2008, 05:02 AM   #7
KLboxeR
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Forgot to add:

Change or clean the hose end often. They will go bad and cause flow restriction that the gun can't overcome, causing you to lose prime.
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Old 03-28-2008, 05:25 AM   #8
steven1955
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How old is your grease?

I don't use a whole lot of grease out of my grease un, so the grease in my grease gun was several years old. My gun stopped pumping. When I took it apart I noticed that the grease had separated into an oil and very thick solid which was hard to break apart even by hand. This was an expensive Castrol systhetic grease.

New grease gun cartridge, used the new grease to clear the old grease out of the hose. Problem solved.
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Old 03-28-2008, 07:53 PM   #9
TonyT
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Thanks Trl Rdr

Grease guns have been a source of frustration for me for years. Your link has cleared up a lot.
I have noticed that my grease gun seems to leak "oil" and a fair amount of it over time. I don't need to do a lot of greasing, so the gun lies there for months at a time. I use Canadian Tire Motomaster brand usually, maybe not the best quality and quick to decompose???
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Old 03-28-2008, 08:27 PM   #10
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Some grease guns are really lame quality while others work great. I was an auto mechanic during college and we had one old manual gun at the shop that was probably older than I am and never missed a beat. All the newer manual ones we tried constantly had the issue with trapped air. We had a pnumatic gun that worked pretty well. I don't recall who made it, but I think it was sold by the Mac tools guy (but wasn't an actual Mac).
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Old 03-28-2008, 08:35 PM   #11
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Install cartridge.
Push in plunger.
Unscrew the top till its got a few threads left, careful not to let it fly off. You will hear the air coming out. Tighten up the head again, few pumps and your off.
I now use a battery operated one and it works a treat.
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