O, I'm about to put my jks discos on and all I do is take the link ps and tighten the middle bolt to lock them in place and I change out the cartridge in my grease gun that was sitting in there for how long and after the new one is in...nothing. I took the top off and put it back on, and tried to pump it and push the plunger to get grease to move. What do you guys do to get your grease guns working?

 

Smack it with a hammer and if that doesn't fix it it's broke