MX6000 Air Conditioning

[riptides]

Our MX seems to not be cooling properly. Cab model. LOL. Dealer said all was well. Noticed a water leak on the drivers right side up by air vent.

What is under the roof as far as parts go? What do the drains tie into? And how best to inspect and clear if plugged?

 

[5030]

Depends on the year. A few years ago Kubota moved all the mechanical stuff under the seat but on mine, it's all under the roof panel, ac evaporator, heating heat exchanger and blowers. If yours is like mine and you get water dripping, that means the drain's for the ac are clogged with debris. I remove my roof yearly and clean the evap as well as the heater heat exchanger and the drains as well. The drains are via hoses that terminate next to the oil pan on both sides. I spray mine down with Purple Purple Power diluted and carefully hose them out. Amazing the junk that comes out the drain hoses. be apprised however that it's not an easy job to access the coils or the blowers for that matter and it takes 2 people to lift off the roof panel after removing the LONG screws from inside the cab. The short ones retain the headliner and you do not want to remove them, ever.

 

[dusty3030]

You can see all the diagrams of your tractor on Messick's site. Also keep in mind a cab tractor has a ton of glass on top of the fact you are sitting on top of a hot transmission and right behind your steering wheel is a hot engine blowing it's hot air right on the firewall. What I'm getting at is a tractor cab is an oven. Tinted windows help a lot. Stick on sound / heat insulation sheets under your floor mat help too. Your AC needs all the help it can get. Make sure your AC filter is clean and use the recirculate to help as well.
Also keep your condenser and any screens on your hood clean as you can. Every little bit helps.

Messicks Parts

 

[riptides]

Depends on the year. A few years ago Kubota moved all the mechanical stuff under the seat but on mine, it's all under the roof panel, ac evaporator, heating heat exchanger and blowers. If yours is like mine and you get water dripping, that means the drain's for the ac are clogged with debris. I remove my roof yearly and clean the evap as well as the heater heat exchanger and the drains as well. The drains are via hoses that terminate next to the oil pan on both sides. I spray mine down with Purple Purple Power diluted and carefully hose them out. Amazing the junk that comes out the drain hoses. be apprised however that it's not an easy job to access the coils or the blowers for that matter and it takes 2 people to lift off the roof panel after removing the LONG screws from inside the cab. The short ones retain the headliner and you do not want to remove them, ever.

I will probably return it to the dealer. I don't have the time to mess with it. And by your note, looks like a two person job. Thanks for the info,

 

[pokey1416]

Follow this post for a bit. Installing Reflectix might help. I’ve heard window tinting helps too.

What did you do to or on your Kubota today?

 

[riptides]

You can see all the diagrams of your tractor on Messick's site. Also keep in mind a cab tractor has a ton of glass on top of the fact you are sitting on top of a hot transmission and right behind your steering wheel is a hot engine blowing it's hot air right on the firewall. What I'm getting at is a tractor cab is an oven. Tinted windows help a lot. Stick on sound / heat insulation sheets under your floor mat help too. Your AC needs all the help it can get. Make sure your AC filter is clean and use the recirculate to help as well.
Also keep your condenser and any screens on your hood clean as you can. Every little bit helps.

Messicks Parts

All is clean. I get the oven part, but I should not be sweating getting out of this thing. Something is not right.

I saw the parts diagrams, thanks.

 

[dusty3030]

Agree you shouldn't be hot in it you should be able to stay comfortable. In a full hot sun 90 plus degree day it might not be able to freeze you out, but you shouldn't be hot either if that makes any sense.

 

[sixdogs]

Make sure the cabin filters are clean. Mine weren't and warmed things up. Mine are behind the seat and there are two. Kubota's cool fine if working right. Maybe not in Texas.

 

[5030]

I will probably return it to the dealer. I don't have the time to mess with it. And by your note, looks like a two person job. Thanks for the info,

I did a thread on here or on OTT (which I no longer frequent), about the exact procedure for not only removing the top, but adding Reflectix and cleaning the heat exchangers. Cannot remember where but I'm sure a search will turn it up. You can do it yourself (which is what I do every spring). Be apprised that your dealer will probably sock it to you on labor. it's not involved but it is a time consuming job.

 

[Hunter1157]

I did three things to my MX6000 cab that made a world of difference in keeping the cab cooler in the Texas heat. First I tinted all the windows. Then I added sound/heat deadening material all under the seat all the way to the floor. Last I pulled the top, cleaned everything up and added insulation (see pics). I mowed a field for two hours last week at 97* and was comfortable the entire time.

 

[2manyrocks]

I'm in Middle Tennessee and suspect your weather has been similar to ours. It gets deceptively hot quickly during the day putting a greater load on your a/c. The heat index has been climbing up to 105 degrees around here for a few days.

 

[riptides]

I'm in Middle Tennessee and suspect your weather has been similar to ours. It gets deceptively hot quickly during the day putting a greater load on your a/c. The heat index has been climbing up to 105 degrees around here for a few days.

Yep. It is up there temp wise. And I am breaking a sweat in the cab.. and I am not in full sun all the time. Just does not feel cold coming out of the vents...and the water dripping down the right side window tells me something is plugged....

 

[5030]

All I know is, my 2002 M9000 with factory tint gets cold enough to cause me to shiver in 90+ ambient. Good enough for me. I'm adverse to heavy tint because a lot of times I roading back in the dark.

 

[5030]

I did three things to my MX6000 cab that made a world of difference in keeping the cab cooler in the Texas heat. First I tinted all the windows. Then I added sound/heat deadening material all under the seat all the way to the floor. Last I pulled the top, cleaned everything up and added insulation (see pics). I mowed a field for two hours last week at 97* and was comfortable the entire time. View attachment 809246View attachment 809248

That won't work with the earlier cab Kubota's because that wool insulation effectively blocks the air flow. All I use is foil-bubble- foil reflectix, glued to the underside of the roof panel. I might add that I did add a 12 volt supplemental (automotive) cooling fan bracketed right in front of the AC condenser unit that cycles with the AC compressor. Like I said in a previous comment at 90+ ambient, it's so cold in the cab, I shiver.

 

[2manyrocks]

Yep. It is up there temp wise. And I am breaking a sweat in the cab.. and I am not in full sun all the time. Just does not feel cold coming out of the vents...and the water dripping down the right side window tells me something is plugged....

The air not feeling cold and water dripping are symptoms of a dirty evap coil. It would be great to get this fixed since we're just now heading into the heat of July and August.

 

[riptides]

I took a longer look at the parts diagrams. Then looked at the tractor. That helps. Lol. Seems I can access the area of interest without taking the roof off. It looks to be bolted under the roof outside the cab over the rear window. I hope to speak with a service manager after the holiday. Appreciate all the posts...great information.

 

[5030]

I took a longer look at the parts diagrams. Then looked at the tractor. That helps. Lol. Seems I can access the area of interest without taking the roof off. It looks to be bolted under the roof outside the cab over the rear window. I hope to speak with a service manager after the holiday. Appreciate all the posts...great information.

Not really. One set of screws secure the headliner, the other longer set secure the roof. If you remove the headliner screws and the headliner comes down, all the components, both electrical and mechanical will come down as well and the you will still have to remove the roof panel to fix the mess you make. The headliner provides physical support for various components. Do not remove those screws and release it. Your service manager will know.

 

[5030]

Again, later model cab units have the 'works' under the seat while earlier ones like I own are all overhead and candidly, removing the roof panel is not that difficult. It's light weight blow molded laminated plastic. The only reason it takes 2 people is it's large and ungainly.

 

[dusty3030]

You need to take the roof off to access the ac on your tractor. It’s not hard. Look on the parts breakdown to identify which screws to remove it.

 

[grsthegreat]

your coils might be freezing due to low Freon in system. this could cause the dripping you see. i can operate my cabbed unit in 100° + weather and im actually cold inside the cab.....ie.... i never want to get out of cab.