I was able to do it with the extension off of a regular old hand pump grease gun. I took it off the grease gun and added an adapter that came with a lock n lube fitting kit so that I can use my lock n lube (short or long) with it. It's the only thing that I have that worked. The key to it is the bend on the extension pipe (came that way) and that it had a smaller diameter fitting on it. See post #5 here (disregard the brass fittings in the pic, they are not needed):
Has anyone tried to use the Longer LockNLube XL Coupler to reach the grease zerk on the 1025R driveshaft U-joint? I tried the needle dispenser and it would not go into the joint...just made a mess around the grease zerk.
- edit: I use a trigger style grease gun with a flexible hose and a lock n lube fitting on the end of it. I use it to grease all the other fittings. Then, when it comes to that one fitting, I just take that extension in the pic (post #5 in link) and connect it to the lock n lube. Rotate the shaft with your hand until you get the zerk facing the hole, and then I just push that extension on the zerk. Another key to it is the extension is rigid and I can apply a little force to get it on the zerk.