I have an older grease gun that I use for greasing my older pickup. This is
the hand operated type, with the lever that you pump to get grease.
Lately, I haven't been able to get any pressure when using the lever.
Any suggestions on why no pressure, or should I just get a new one?
Any easy way to alleviate having to open up hand operated grease gun
once or twice per using up one cartridge of grease in order to remove
air which causes gun to pump like it is empty when it is not empty?
I put a metal ring around the plunger shaft, and hang the grease gun with
the nozzle down when not in use.
I'm not sure it makes any difference, but I'm hoping that the grease will
settle towards the pump assenbly at the tip. Which (when not in use) is the
pump assembly at the bottom of the tube.
Seems to work for me.
Don't know what kind of grease gun you have, but
it is either no good or you are doing something
wrong. Most guns have a plunger at the rear that
puts pressure on the grease to move forward. When
change the cartridge, you pull the plunger out
(and lock it in a slot), you put the cartridge in,
screw the top on, and release the plunger and
push it in. The built in spring continues to push
the grease forward. Perhaps the spring is broken
or missing. The only purpose of the pump is to
build pressure in the tube/hose before the
coupling. If you can unscrew the top without
loosing all the grease on the ground, then the
plunger is not working.
Not in my experience, besides, the pressure on the
grease would make any air move into the hose/tube.
Don't know what he means by pumping the plunger,
but if he means the plunger at the rear end of the
gun (not the handle used to squirt the grease),
that would just stir ups the grease a little. You
can't air lock a gun if the spring mechanism that
pushes the grease forward is working correctly.
Well, maybe you can air lock it if you really try
or it is a piss poor excuse for a grease gun.
I'm not a professional grease monkey but took care
of all my vehicles. Pulling the plunger back to
compress the spring took a lot of muscles on every
grease guns I used. I still vote for a wimpy spring.
Well, guess your supplier does better, maybe... :)
If it's all air, no grease forever, that's different...an occasional
"whiff" on a stroke or two or three has been my experience since was
first big enough to help w/ lube work on the farm. Then we loaded guns
from bulk drum. No real difference now w/ cartridges except slight
convenience that I can tell...
Like Harry, it has been my experience for over 50 years. Have 3
different brand guns now...same prob in all three. Two of them do have
a screw (plug) at the top (end where grease exit tuibe is) the
function of which I have no clue.
On Thu, 09 Jun 2005 00:23:36 GMT, "George E. Cawthon"
i'm not for sure if this has been suggested yet, but my grease gun has
a slotted cap at the top near the handle that i take off when i get
air. i just crack it open until grease starts to come out. if i take
it all the way off, i get a mess.
i've also worked with some guns that have a spring loaded ball bearing
in place of the cap. this way you just push on it until the air comes
hope this helps.
If it pumps w/o being on a zerk then likely the internal seals (o-
rings) have finally worn out. If it won't do even that, guess would
be the loading spring broke or is jammed...
Unless it is a quality gun probably just as well as to replace it as
try the repair if it seals rather than a simple "ah-ha" on the spring/
Oh, of course there's also the outside chance you've got a really big
air bubble and keeping pumping and all will heal itself or the even
remoter chance you've got something foreign blocking the line I
to add a little-it doesn't pump grease, even when not on a grease fitting.
The spring is OK.
I suppose it could just be an air bubble.
occasionally, I will get some pressure, but it only lasts for 4-5 pumps.
Actually, the more likely culprit is the linkage between the handle
and the internal mechanism -- check for one of the link pins missing/
If it does on occasion pump, yes, that sounds like air would be good
possibility. Try pulling the plunger and release it again, trying to
work the plunger down. Sometimes can compress or move the air pocket
around and get it to clear more quickly...
On occasion I've gone so far as to take the tube back out and
"massage" the grease in it to rid it of pockets in really bad cases.
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