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I have liquid ballast & cast rear wheels on my M7040 & always add counterbalance of 750-1000#s on my tractors 3pt while handling several 1000's of rd bales.

Sounds as if bolt(item 130/270) in the interior end of axle is failing or not staying tight. Use of diff lock shouldn't have any affect on that bolt failure!!

I suggest to replace the AC, water pump pulley belt if you haven't already performed that task.

Thank you for correcting my incorrect statement!

Welcome to this forum Does lever move forward or remain in place when 3 pt hitch lowers?? If lever moves forward friction washers on lever are worn & need to be tightened.

Didn't your M4900 have a separate water separator housing that was designed to catch water prior to reaching inj pump? If a large amount of water is present in fuel tank I would think water separator bowl would require emptying very regularly if engine was operated very long.

IMHO there's a lot more involved to be a good wife than a woman being good looking/slim & young. I'll choose very good cooking abilities & easy to get along with over those items. My first slim, good looking wife could barely boil water so cooking good tasty food was out of the question. I also...

Before I purchased my Kubota M70401(64 pto hp) I operated my 6' King Kutter ll on a Cub Cadet 7360(29.5 pto hp) with no problems. I think 56 pto hp will handle a 7' rotary tiller just fine with tractor trans in lowest speed more especially on 2nd & after trips over the same area.

My M7040 fuel tank vent hose is located same as M7060 as mcmxi posted. Several yrs ago I had similar fuel problems with a M4900. I located at clogged orifice(tiny filter) in water separator housing blocking fuel delivery to inj pump.

I suggest to check operation of shuttle control cable & associated control valve.

JD hyd dye is part # MT3668

Could coolant control valve for heater be allowing hot coolant to pass through it?

I think Peter made a mistake on Tractordata. Only Kubota parts catalog I can locate for M8580 with cab has Synchro-shuttle not hyd shuttle. This parts catalog shows a dual speed hyd clutch that could be cause for slippage

I've never needed to repair my '11 Kubota M7040 AC but on my JD 4255 when I R&R compressor several yrs ago I just put required amount of oil in compressor only then installed refrigerant & AC system cooled very good.

Welcome to this forum Sounds similar to a Kubota M4900DT I owned many yrs ago. My M4900 got locked in reverse & I had to have tractor split & manual shift reverser replaced.

No AC cooling could be caused by clogged condenser or low refrigerant or loose AC compressor belt to name a few of the simple reasons.

I was referring to equipment slip clutches that come with each implement not aftermarket slip clutches added to pto shaft. I still think type of implement & HP required to operate dictates slip clutch setting not individual tractor HP. If you watch video Elliott posted the slip clutch springs...

I fail to understand what HP of tractor has to do with slip clutch adjustment setting. If hard ground is encountered while tilling slip clutch should hold the same regardless of HP. I know slip clutch on my JD 467 baler & Krone AM283S disc cutter has one operating setting regardless of tractor...

Over the many yrs I been associated with repairing tractors I've read of many hyd pumps being replaced without good hyd diagnostic procedures being performed only to determine as you did that the replaced hyd pump was not the problem. I also agree some hyd diagnostic procedures can be difficult...

What do you think the purpose of item 150 in photo below happens to be?