3000 Series Mower Deck Gear Box???
I have a bunch of 3000 Series Cubs and until now, I have not had any issues with the mower deck gear boxes.
When I would get a mower deck I would pull the cover off of the gearbox, drain the fluid and put 75W-90 Synthetic Gear Lube in them. None of them were ever out of lube and all seemed to work well.
I just bought another 3000 Series this week and I knew there was a problem with the mower deck when I bought it. PO said it sounded to him like a belt squeeling, but when I heard it, I felt sure it was coming from the gearbox. I accounted for the bad gearbox when I made offer on the tractor and when I got it home I confirmed that a severe grinding sound was coming from the gearbox.
I have a gearbox from a parts tractor that I plan to install and was wondering if there are any mods that I should make before I install it.
I have read where some people have installed a grease fitting and a vent hole on the gearbox and then run grease in the gearbox.
Assuming I never run the gearbox low on lube, is the grease really going to make it last longer?
Any other mods that anyone would recommend?
Who has seen gearbox failures and what were the circumstances?