I see lots of guy that put corn head grease into leaking gear cases. I do this myself on ones that are not used very often, Like the ones on grain augers. Getting the grease into the box can be a PIA as some of them have a small filler hole that a grease gun tip will not fit down through.
So take pieces of 1/4 inch brake line 12 inch long, 1/8 pipe to brake fitting adapter, 1/8 pipe coupling and a 1/8 grease zerk. So you end up with a grease zerk on the end of a long skinny pipe. You can then stick that down into the gear case clear to the bottom. Then just pump it full. You will not have the air pockets that you do when trying to just pump it in through the small filler hole. This way when you see the grease coming up the to filler hole you are more likely to have enough in it. Just pumping in the top ends up with big air pockets in the grease that makes it hard to see when you are full.
So take pieces of 1/4 inch brake line 12 inch long, 1/8 pipe to brake fitting adapter, 1/8 pipe coupling and a 1/8 grease zerk. So you end up with a grease zerk on the end of a long skinny pipe. You can then stick that down into the gear case clear to the bottom. Then just pump it full. You will not have the air pockets that you do when trying to just pump it in through the small filler hole. This way when you see the grease coming up the to filler hole you are more likely to have enough in it. Just pumping in the top ends up with big air pockets in the grease that makes it hard to see when you are full.
