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I used a 14mm fine-thread bolt, some 1/2" steel tubing I already had, and some PEX tubing and made a new heavy-duty vent tube assembly. I did use the Kubota top-piece filter to complete the assembly. The bolt was drilled 5/16" through then bored 1/2" diameter about 3/16 deep in the head. The...

This morning I got it put back together and then mowed 2 acres of grass. Everything is fixed, and it is running smooth. Thanks to all who provided assistance and for allowing me to think through this project. Now I know to keep an eye on this vent tube because at some point it will break...

1) I discussed this with the Messicks tech rep. He said to pull the ring up until it just about touches the disc. With the stepped sleeves on which this thing assembles there isn't any option to adjust the gap. With the ring mounted on the three studs I could pull up the lower disc to close...

Today I went to the local Kubota dealer to get the vent fitting and hose and little filter thingy. Yikes!! The plastic threaded vent fitting is $36, the 3" of plastic hose is $8, and the little plastic filter on top of the hose is $17. Parts # 370 & 380 & 360. Yikes! I'm going to reuse the...

When I apply 12v to the two leads from the PTO it clicks and locks into position. It's good. I picked up a spray can of CRC QD Electronic Cleaner to clean out the PTO. I wish I knew how to disassemble it so I could really clean the surfaces. I still need to test the switch but I'm believing...

I understand your aversion to using kero or diesel to clean the PTO as both of those have lubrication properties. Gasoline would be a better cleaner but it's flash point makes it dangerous to use in this fashion. I'll use the brake cleaner. I used to use something called ElectroClean to clean...

This morning I removed the gearbox with PTO and they were a mess. I scraped off the excess oil soaked crud, then brushed with diesel fuel, then rinsed with water. I still have to clean up the underside of the mower. I was about to go to our local Kubota dealer across town to get oil, a vent...

Who knows what kind of oil the gearbox requires? Might be a good idea to drain it and refill with fresh.

The vent hose is broken from on top of the gearbox located between the engine and the HST. The PTO is attached underneath this gearbox and is drenched in the oil that has splashed out. Tomorrow morning I should have this gearbox pulled from underneath. Other than replacing the vent hose and...

Hmmm. I'll check the breather for a missing vent tube.

Today I rinsed off the mower before moving it into the shop to begin work. When I removed the RH deck belt-guard I found what looks like a vent hose attached to a broken off fitting. That's probably the reason for the oil splashed around. Now I'm concerned my washing off the dust and rinsing...

I own a Fluke multimeter but admit I am no expert with it. I'll need a wiring diagram to facilitate the necessary checking. I've considered the fault may be in the pull/push button switch and its replacement cost is much more palatable at ~$25. It seems to have 8 wires connected to it and if...

It seems the PTO is probably electromagnetic activated, and I didn't hear any thunk when it was activated with no results. It was like it was not receiving the signal to activate, so it could be the pull button. But the excess oil in the PTO area is suspect. I'll pull off the seat and body...

I have TG1860 lawn tractor with 54" deck that I bought new about 23 years ago. It has a 20HP diesel engine with hydrostatic transmission. It now has almost 700 hours so I'm averaging ~ 30 hours per year mowing about 2.5 acres of yard. In 2021 the gearbox driving the PTO and other stuff ate...

GeoHorn, you might be right. But the dealer didn't rebuild my box, but replaced it with a box from their junkyard. Although he did say they checked out this box and found it to be solid. Maybe it'll last another 10 years. In looking through the exploded drawing I see I didn't get back many...

Thanks Russell. I did find an exploded drawing and parts list for this specific gearbox. I'll study it for parts.

Because I was out of town last week and didn't have time to work on this I carried it to the local Kubota dealer. They found the bearings shot and bevel gears worn out, probable because of the bearing going out. To repair they remove one from a mower in their Kubota "graveyard", determined it...

By removing the mower deck belt and the hydrostatic drive belt I've positively narrowed the rattle to the gearbox between the engine and transmission. Yesterday I mowed the grass and now I have more oil splattered on top of the deck, so the gearbox's input shaft seal is leaking. I've decided...

I've removed both belts and cannot detect any rattles of concern. I detected some leakage on the top back center of the mower deck, it's been catching the occasional drip from the input shaft of the power transfer box. I talked with the local Kubota dealer rep who said based on their...

@ve9aa I see the hose sticking up and believe it to be a vent tube. It never occurred to me that I would top off the fluids through this hose. And with no dipstick or side mounted overflow plug how do I know how much, if any, I need to add? Concerning your suggestion of the shorter belt...