Oil

[mrutkaus]

Putting a little gear moly in seems to make things work better for me.

Mike

 

[Oldmopar]

If you need a vent plug go to any heavy truck parts place, even Napa, and ask for a vent for a rear differential. They work very well and are usually the same size thread, if not pick up some adapters as well.

 

[Chilly807]

Even in the heat of summer, my rotary cutter gearbox only gets warm to the touch, not what I'd call hot. It was shipped with a plain plug in the gearbox, and a vented one in an attached bag to replace the solid one once it was in service.

The anaerobic sealers such as Loctite 515/518 etc won't harden until there's no air in contact with the sealant, so simply tighten them to the snug point and wait 24 hours before adding oil for the best results. A final tighten won't hurt matters any, and they will work if you add oil right away too, but it's not ideal.

I've only ever used plain old 80w90 gear oil and had no problems, but there's no harm in using the high end synthetics if it makes you feel better.

Sean

 

[Short Game]

The gear box on my Bush Hog finish mower has always gotten hot. It was old when I got it. I had to put new seals in it once. I figure they just get hot. I run mine for hours at a time. It gets hot. Most of my seat time is running this mower. There is a little bit of gear oil in a small case. Why wouldn't it get hot?

Hot, warm? Those are relative terms. Mine gets quite warm.