3000 Series A/C Issues

[sunnyside360]

Talked to the JD dealer this morning about the AC and torn & missing isolators on the 3720. They are picking up the tractor tomorrow morning to check and repair whatever. He said that in general the air vent temperature should be at least 30 deg lower than the outside temp. For example, if 90 deg outside the vent temp should be 60 deg, otherwise something is wrong. He also said they have seen very few problems with the AC on the 3000 series tractors. This is the largest JD dealer in these parts.
Can't complain about the service since they are picking up the tractor tomorrow morning and no mention of pickup/delivery charge.

 

[nmu98]

I would probably fix the seal. 88 is not that hot. I think the some cabs have poor seals in the air box.

That picture makes it unclear where that seal goes. Not knowing where the internal seal sets makes it hard to put it in. That is why i was not concerned about it in the first place. All my other seals are perfect since i re-did them. I cannot see losing much from that internal seal. There is no chance of pulling any outside air in... Probably why JD has not put them on most machines. I would assume it has been phased out like the loadmatch switch.

 

[sunnyside360]

Talked to the JD dealer this morning about the AC and torn & missing isolators on the 3720. They are picking up the tractor tomorrow morning to check and repair whatever. He said that in general the air vent temperature should be at least 30 deg lower than the outside temp. For example, if 90 deg outside the vent temp should be 60 deg, otherwise something is wrong. He also said they have seen very few problems with the AC on the 3000 series tractors. This is the largest JD dealer in these parts.
Can't complain about the service since they are picking up the tractor tomorrow morning and no mention of pickup/delivery charge.

Had to put the top back on since the JD dealer is picking up tomorrow and just for grins I put duct tape over the areas where isolator 10 is torn and cranked up the A/C. Low and behold the vent air temp dropped down to 54 deg F, while cab temp was 64 deg and outside temp was 74 deg. The A/C system dropped air temp 20 deg (74 - 54). I have renewed hope for cool air in the cab. Already cannot wait to get the tractor back from the dealer with all the fixes.

 

[truckie36]

Our 3320 roof seal came damaged from the dealer. They had the roof off to install the radio and other accessories. We fixed it ourselves with self adhesive foam from Lowes. There were other areas in the center that were not damaged but you could not see any indentation in the seals, so we added extra in those spots. We also put some foam in to separate between the fresh air intake and recirculate intake to reduce the fresh air intake. It's much cooler now. The next step is to add an electric pusher fan in front of the radiator to see if that will improve it further.

 

[Nuru]

I would probably fix the seal. 88 is not that hot. I think the some cabs have poor seals in the air box.

Opening the top up a second time revealed additional breakage on the sides. From taking a good long look at the isolators and seals, it seams that, if you have breakage/holes in the isolators over the doors, that would be a good spot for outside air to get mixed with the cooled air and go right into the cab. If the breaks are at the rear or front, it seams that other seals/isolators would help.

 

[Nuru]

Our 3320 roof seal came damaged from the dealer. They had the roof off to install the radio and other accessories. We fixed it ourselves with self adhesive foam from Lowes. There were other areas in the center that were not damaged but you could not see any indentation in the seals, so we added extra in those spots. We also put some foam in to separate between the fresh air intake and recirculate intake to reduce the fresh air intake. It's much cooler now. The next step is to add an electric pusher fan in front of the radiator to see if that will improve it further.

truckie36; that sounds pretty good. I also used window door seal from Home Depot to repair the holes in mine until the new isolator seal shows up. Next time tytou have the top off can you take some pics of the seal imnprovements you installed? I would like to look at doing some of them.

 

[Nuru]

That picture makes it unclear where that seal goes. Not knowing where the internal seal sets makes it hard to put it in. That is why i was not concerned about it in the first place. All my other seals are perfect since i re-did them. I cannot see losing much from that internal seal. There is no chance of pulling any outside air in... Probably why JD has not put them on most machines. I would assume it has been phased out like the loadmatch switch.

I did not seee #11 either and my AC works fine. I am going to request it and install it to see what results I get.

 

[nmu98]

I did not seee #11 either and my AC works fine. I am going to request it and install it to see what results I get.

Please take a picture of where it goes. I have the seal sitting in the shop.... I just don't want to put it in and see decreased results. i am pretty happy

 

[Nuru]

Please take a picture of where it goes. I have the seal sitting in the shop.... I just don't want to put it in and see decreased results. i am pretty happy

Sure, OBTW, my dealer asked me to send them the seals to them for an exchnage. So since it only cost 19 bucks for the 11 and 19 bucks for the 10, I told him to send them and refund me later when JD approves it. The 11 is not visible so they should send that one with charging me first.

 

[Silver_Knight]

Well the saga continues! Went out the other day when the temp was in the 80s and was sweating in my A/C cab. I'm gonna take it back in and have them put a blower on the evaporator.