AxleHub
Elite Member
I recently made a mistake to not put this thread on the General Owner/operating forum . . so I'm now correcting that error.
This topic can apply to all scuts and cuts that have a mmm
The gear box on a mmm. Its pretty easy to forget it when you're focused on the tractor engine and hydro servicing needs. And besides the mmm . . maybe there are other implements that you have a gear box and oil to be changed too.
Recently I drained the gear oil out of my mmm gear box (after about 40 hours of actual mowing use - manual recommends 50 hours) These gear boxes aren't large . . a quantity of about 13 oz. in my particular gearbox. I tipped the mmm up to a vertical position to make sure the 1st change was drained as much as possible. And a good thing I did. Lots of shiny fine grit . . Lots of it. Normally a very light honey color . . the color that came out was a deep gray and not transparent at all. Its natural after 40 hours of operation of a new mmm that it would have some with all the fine gears and surfaces. No pieces or chunks . . but did I mention LOTS of shiny grit in the oil.
Getting out contaminants and metal grit is important to eliminate wear on the gears as they spin fast . . and of course no filter to catch contaminates.
I put in a synthetic gear oil now. 13 oz deserves all the benefit it can get Especially when you figure it's another 150 or 200 hours to the next scheduled gear oil change time (but I will test ut sooner just to make sure.
I was surprised at just how much grit was in the oil. So have you thought to change your gear oil recently in your gear boxes ? I'm surprused at the result but sure glad I did it . . clean oil for machines is like clean water for us.
This topic can apply to all scuts and cuts that have a mmm
The gear box on a mmm. Its pretty easy to forget it when you're focused on the tractor engine and hydro servicing needs. And besides the mmm . . maybe there are other implements that you have a gear box and oil to be changed too.
Recently I drained the gear oil out of my mmm gear box (after about 40 hours of actual mowing use - manual recommends 50 hours) These gear boxes aren't large . . a quantity of about 13 oz. in my particular gearbox. I tipped the mmm up to a vertical position to make sure the 1st change was drained as much as possible. And a good thing I did. Lots of shiny fine grit . . Lots of it. Normally a very light honey color . . the color that came out was a deep gray and not transparent at all. Its natural after 40 hours of operation of a new mmm that it would have some with all the fine gears and surfaces. No pieces or chunks . . but did I mention LOTS of shiny grit in the oil.
Getting out contaminants and metal grit is important to eliminate wear on the gears as they spin fast . . and of course no filter to catch contaminates.
I put in a synthetic gear oil now. 13 oz deserves all the benefit it can get Especially when you figure it's another 150 or 200 hours to the next scheduled gear oil change time (but I will test ut sooner just to make sure.
I was surprised at just how much grit was in the oil. So have you thought to change your gear oil recently in your gear boxes ? I'm surprused at the result but sure glad I did it . . clean oil for machines is like clean water for us.
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