G1000 tranny and rear end check?

A buddy of mine just got a g1000 mm, and we"re trying to figure out how to check the tranny and rear end. Are they combined like the newer ones and run hy-tran or are they both separate and run 80-90? And where are they checked from? Thanks
 
Assuming that this tractor has the updated torque, there are two small pipe threaded plugs on the right side of the transmission housing, nearby the torque lever. Use the lower one to check the oil level. The tractor should hold about 18 gallons of oil. Use only high quality 85-140 or 80-90. Anything less than this will lead to trouble. NO HY-TRAN! Trust me. The hydraulics are separate and can be checked on the rockshaft housing with with the dip stick fill-tube.
 
With hy-tran, there can be prolific gear failure, especially when using the tractor under heavy load. The big MM engine has an incredible amount of torque for straight cut gears that were already made of questionable material. You could maybe get by without a heavy oil if under extra light use, but from my experience, it takes one big pull to really start gear failure. Plus heavy oil will quiet the noise from straight cut gearing.

The old torque should be checked with the second, more forward plug on the torque compartment. It is slightly higher to ensure torque lubrication. Without an oil cooler, the front pinion bearing is capped to keep oil from leaving (and sometimes from getting into) the torque compartment.
 
I hate to take issue with you G1050 but I don't think there's to be any 80/90 or other heavy oil in the back end of that 1000. I would think that the rear end of the 1000 would be the same as my 900. They have a pump to circulate the lubricant and that pump is not expected to pump heavy oil, in fact, if it gets cold out, I'm sure it won't pump heavy oil. Someone check the books for oil spec please.
 
The books offer no spec other than Genuine MM oil. There was a service letter that said hydraulic oil is way too light and a gear lube should be used...

I understand how the pump works. Run 'em hot. Run 'em cold. Never had a problem with heavy oil. Many with hy-tran type stuff. I even fall plow and blow snow with a MM G950 3speed torque. No problems.
 

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