If you can, get a parts schematic. Look it over and see how its made, this will make it easier to figure out where to look for your troubles. I would think your problem is a check valve or ball is not seating properly and thus why the pumping action is not working.

 

I would think your problem is a check valve or ball is not seating properly and thus why the pumping action is not working.

Can that affect men?

 

Is there a screen in there somwere? I think I remember seeing one in parts list


Innovative pump filter screen prevents dirt and contamination from clogging the pump mechanism.

This DEWALT® High Performance Industrial Tool comes with a warranty package that includes:

• 3 Year Limited Warranty
• 1 Year Free Service Contract
• 90 Day Money Back Guarantee

http://servicenet.dewalt.com/Products/Detail?productNumber=DCGG571M1

 

NASA's law Don't get it up if you cannot keep it up

 

In the milwakee there is a hex plug that you remove with a 11/16 wrench(to try get the air out) In there is a spring and ball. It is easy to lose the ball if yours has that kind of setup.

Lots of people brag about electric guns but there are many times that you could do it faster by hand. Very troublesome. Some people say store the tubes upright(in canada that doesnt matter cause its not going to get warm enough to melt) Others say to top off the tubes so no room for air at all. No help either. I think they are made cheap and some of them simply dont seal well enough to pump. Not sure if grease kind matters either. JD and petro Can is not good in mine and trying case now.

 

Our Milwaukee guns are great.

 

Thats great to hear. Problem is coming up with the reason some dont work is tuff as "notinteresting" is finding out. Whats your suggestions? I think it has to be air leak somewhere.

 

I've always used Lincolns with great success. Until the last one, which I took apart numerous times trying to fix, never worked right from day one. My solution was to throw it against the concrete floor repeated until there was no way I would be able to use the pile of crap again. I've been using a dewalt and Deere guns since

 

Just found our 2nd Milwaukee gun that had been missing for a few months found it laying in a field battery is screwed but the gun still works

 

Perhaps this link which is on the Dewalt site may help others get their eyes on whats inside and have some suggestions. No doubt its got something to do with that check valve/pump assembly/transmission. I have to wonder if even some bit of dirt accidentally dropping into a tube of grease, if that could plug up a passage way or not allow a check valve to operate properly and hang up.

There are two tabs near the top of the page, click on "Part Diagram" to bring up the picture and can zoom in or out and move the picture around as desired and look at the parts list below it to get name of item and even the price.

Detail

 

Northern I hope you didn't wast too much time finding link. It was posted on first page. As well take a look at the filter, and tell me how dirt is making it into gun

 

I found a screen that was all plugged up. Is just inside the threads before the grease actually enters the gun. It was full of old grease. Pumps like brand-new now.

Apparently this is something you're supposed to clean on a yearly basis...who knew?

 

I found a screen that was all plugged up. Is just inside the threads before the grease actually enters the gun. It was full of old grease. Pumps like brand-new now.

Apparently this is something you're supposed to clean on a yearly basis...who knew?

That screen found its way into the junk before the first tube of grease was put in.
It looked like trouble from the start and no other guns we have ever had used them so I guess it was problem prevention.

 

Interesting, I wonder if that is a common component of all auto grease guns as manual guns don't use any such screen. When you said old grease, I wonder what type of grease you are using that it would get "old" inside the gun as I do suspect some sort of contaminant mixed in with the grease while changing cartridges and caused it to get gunked up with something that couldn't pass through. Anyway what an easy fix and pretty sad on Dewalts part that they wouldn't give you the time of day in at least having you check out a few items like that.

Was that number 28, the filter as they call it ?

 

Interesting, I wonder if that is a common component of all auto grease guns as manual guns don't use any such screen. When you said old grease, I wonder what type of grease you are using that it would get "old" inside the gun as I do suspect some sort of contaminant mixed in with the grease while changing cartridges and caused it to get gunked up with something that couldn't pass through. Anyway what an easy fix and pretty sad on Dewalts part that they wouldn't give you the time of day in at least having you check out a few items like that.

Was that number 28, the filter as they call it ?

Yes that's the part. Except it doesn't look like that. It's just a fine mesh screen with a rubber gasket around it.


It was clogged up with old grease...looked like the old grease we used to use way back when...kinda like beeswax. I'm not going to rule out some dirt and chaff either... these guns get used to service combines.

 

You know the stupidest thing that has happened to me -- and it was with the cordless grease gun -- which i never like to use was -- I forgot to take the aluminum pulltab off the end of the cartridge . For the life of me i couldent figure out why there wasn't any grease coming out of the tip -- just a tiny bit once in a while . The pulltab got covered in grease when i screwed it in the gun so when pulling it appart it looked fine . One of thr stupid reasons why i hate cordless grease guns .

 

That could have happened with a regular grease gun

 

I can see a screen being a total pain in the rear when the weather is cooler/thick grease, its tough enough without having to force something through a screen yet !