On Tue, 05 Aug 2014 15:25:09 -0700, Larry Jaques
wrote:

On Tue, 05 Aug 2014 14:44:41 -0700, Gunner Asch
wrote:

On Mon, 4 Aug 2014 23:40:54 -0500, "Terry Coombs"
wrote:

SteveB wrote:
I just bought an air grease gun. I am amazed at how many zircs there
are on a tractor, and how many needed juice. Some wouldn't take any
grease. Do you just put a new one in, or is there a way to soak/clean
these? I know they ain't expensive, I just need to take a couple off,
and take them down to match up, and buy a couple dozen. Is it worth
it messing with the old ones, and does it work, or are they trash
once they are plugged?

Those air guns are sweet, eh?

Steve

It might not be the zerk , the area that needs grease or the passage leading
to it may be clogged up with , well , crud .

Indeed. Some of those may best be shot with some kerosene in a grease
gun..then re greased after the crud is dissolved out

I'd call anyone doing that an idiot to their face, unless they removed
it from the vehicle first. And if they're doing that, it's best to
use a new one.
If he's talking a disc-harrow or similar piece of equipment the
kerosene and regrease may be an acceptable solution. On a tractor, if
it is a part that has no seals and the grease keeps the dirt out, it
may also be an acceptable solution - but not on any part that is
sealed , even if only with a rubber gaitor. If the idea is to get
fresh grease in and through the joint to lubricate it, it is often
successfull and beats tearing the assembly down to run a wire through
the hole to knock the crud (dried grease and dirt) out.

DO NOT do this on a high speed bearing.