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Discussion Starter #1
I have a tg1860g moter runs great only 240 hrs on tractor
I've owned for about 5 years it never had the torque of my wheehorse
but i only use it to mow so thats ok. Now i can't even go up a mild slope
it tries but just starts to wine.I changed hydo tran fluid no help if anything
it got worse.anybody know if there's a pump i can change or clean.If you
let off the gas real fast it locks the rear up so i would think the valves are good thanks for any help
 

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I have a G1900, and I had a similar problem with mine with about 1500 hrs on it. A simple check you can make to see if you have the same problem I had - when it is acting up, pull the Hydrostat dipstick at the rear of the mower and look at the hydraulic fluid on the dipstick. If you see tiny air bubbles in the fluid, let me know, and I'll tell you how to fix it.

Ed Fulton
 

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I'd start by checking the belts (front and rear) and both idlers. If they're OK and not slipping, try a fluid change once more and make sure to purge the hydro first. The Hydrogear units (312-3000) in these machines are fairly stout but have been known to give out prematurely. Mine is still going strong at 470 hrs. The replacement for this unit is the 323-3000. Apparently Hydrogear no longer makes the original unit. Not sure what the cost would be though. Good luck.
 

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Discussion Starter #4
thanks for replying so quick my 1860g doesn't have a dipstick only the deisel tractors do.jbgtb how do you purge?sixbales what did you do for yours?
 

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Purging the tranny involves pulling back on the hydro release lever at the right rear of the tractor with the motor running and depressing the hydro foot pedal at the same time. I recall learning the purge sequence somewhere on MTF. I use my son to help. I have him sit on the tractor with it running and while I pull back on the release lever. I have him depress the foot pedal forward for 10 to 20 seconds and then reverse 10 to 20 seconds. A few cycles of this is supposed to purge any air. Hope this helps.
 

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Jbgtb is putting you on the right track. Try his purge procedure (several times if necessary).

My hydrostat is completely different than yours. Made by Kubota. In my case the hydrostat developed a minor suction leak and pulled air into the system. Very sluggish - didn't want to go. I found the leak at the suction connection on the hydrostat pump and repaired it - its been operating well (like new) ever since.
 

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Discussion Starter #7
thanks again i tried purgng it seemed to work but i'll have to see after i mow it takes a while befor it gets real bad i did find the tran and parts for sale if this didn't work i'll have a good winter project
 

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Discussion Starter #8
well it worked for about 10-15 min i don't know if i'm going to try to rebuild it or just get anew one the new ones are pretty salty thanks for the help
 

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Sorry to hear about the tranny. Let us know what your plans are for the machine. The TG1860 is such a great tractor overall, it`d be a shame to scrap her because of the transmission.
 

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Discussion Starter #10
looks like a seal kit is 25 bucks i think rebuild is worth a shot all it going to cost me is time and knowing me probably a bandaid or two
 

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Keep us updated on the rebuild. There may be a few of us in the same boat in a few years (hopefully not) and your posts just might guide us through. Take a few photos along the way.
 

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I hope your project goes well for you. Nothing like success to help you forget all the work that was involved.
Chris
 
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