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@#%$^%$^& Grease guns

E

Eldon (WA)

Well-known Member
I have about 10 grease guns laying around here and it seems most of them will pump awhile then loose prime. Can't be rocket science...what do I have to do to keep them pumping? I use the grease that comes in tubes. My favorite, a single handed pump just started acting up...it is the only one I can use to grease the pto on my bush hog since you have to hold it with one hand and run the gun with the other.
 
it helps to keep the tubes standing up with the
plastic cap up. the grease will tend to settle in
the tubes and the air will be at the plunger end
when you install the tube.
 
I would bet that ih_bug is right, That's a common problem especially in hot weather. They will develop air pockets if not stored properly.
 
With the ones I'm used to (MacNaught here in OZ) you can pull the plunger handle, turn it till it locks in the plunger and then lean on it till the gun picks up prime
 
I do what Bruce says. If that doesn't work remove the hose from gun.

I recently bought a dewalt 18v gun. It has a 36 inch hose with it, so gun could rest on floor. I like it.
George
 
I bought one of the DeWalts also. Love it, had it about 2-3 months not a single problem. As George said it has a long hose so you can set it most anywhere, hold the hose with one hand pull the trigger with the other.
 
The grease can get old, dry, and thick so the grease gun spring couldn't push it into the plunger pump easily. I had some Pennzoil synthetic grease that was NLGI#2 and it was very thick as it had dried out sitting on the shelf.
 
I also agree with getting the Lincolns. Great guns, pricey but worth it. I would also get an electric grease gun. One greasing with them and you will never go back! My electric one even has a bleed valve on it that helps with air pockets.

Jim
 
It's just air pockets in the grease. Loosen the head a turn, lock the handle and push the plunger ahead while pumping the handle until the air spurts out the hose and then tighten the head again.

Never used a grease gun in my life that didn't get me slathered with grease before I finished greasing whatever unit I was greasing.

Issac Newtons basic law of nature #32: Thou shalt not use a grease gun without getting ones self covered with grease!
 
that's how I've always done it.

but I'm now wondering about loosening the top - AND storing the tubes upright, top side down.
 
I forgot to mention, it will get air locked too because there is air in the grease tubes. However there is a simple and easy to use, a bleeder valve.
 
Lot of various things, I have found similar problems, trapped air, fooled with the top to expel same, and pushed the bottom plunger, not sure about older tubes of grease sitting, likely if there is separation, could be an issue. I'm using an old one now, that was in the service truck of the old ford tractor dealership, lucas red and tacky I believe its called, kind of a working keepsake as its got the dealer sticker on it.

Alemite was always quality and so was Lincoln, not sure about Plews, think I have one though and its got a different grease in it. One of the better ones I had was a red one from Napa, early 90's, some how the rotary cutter found that one, never gave me any trouble, not sure who made it.

Lincoln battery operated, I used one of those quite a bit 5 years ago, for some large ag equipment, that thing was excellent, every tube I put through it, never any problems.
 

I got one of those fittings the guy on the internet sell that screws onto the hose and it actually clips on to the grease joint. You push a small lever and it stays on until you push it again to release. very easy and you can then pump without having to hold the hose fitting against the grease fitting and trying to juggle everything and having it pop off and grease going everywhere and slipperier than owl sh**...lol. If I can remember the name or find the invoice, I will post back for you. It was about $30 and very handy. :D
 
When the gun runs empty, open it and discard the old tube. Then pull the plunger rod back and lock it. DON'T PULL IT OUT UNTIL THE GUN IS OPEN & OLD TUBE IS DISCARDED!! If you do you will pull air into the pump chamber and make it hard to prime.
 
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