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UPDATE! UPDATE! UPDATE! UPDATE! UPDATE! UPDATE! Everything has been cleaned and repaired and cork tape reapplied and the thing is blowing cold cold air. Special thanks to everyone who helped me along this journey.

Mine looks like that... I bought this used off our local NH dealer I suspect no one has ever been up here since it was new... I can't put it all back together till I get the cork tape coming in the mail.

Thanks for your reply Harry. I didn't change anything yet till I find out what I needed to order. This is about week 3 of me doing all this. The tractor had a/c two years ago but developed a very slow leak. I can't locate it and I am not sure if it still exists since it holds pressure now...

ok here is what I got: static 135 low and 140 high after start 50 low and 250 high this was with an ambient temperture of 95 in the sun temperatures to touch: - Drier both sides hot to touch - Condenser Warm in and hot out - compressor Hot on high side and cold on low side - between...

No both are extremely dirty... I am working with basicly one arm... shoulder surgery in 10 days... trying to get this all done before surgery.

Wow Lou Thank you! I will get to this in the next day or two and report back... I am feeling a bit under the weather. I am determined to get this right.

first ambien temp is 92 currently measured with a thermometer next to guages. Second, with tractor running and low side (blue) open at strader valve and High side (RED) closed I have the following readings. 51 on low side (which then dropped to 30) and the High side (red) was 290 Again with...

"Start the engine and turn on the air conditioner. Actual readings will vary according to ambient temperature. The low-side should be near 30 PSI at 90 degrees Fahrenheit or less. Pressure that is too much lower or higher shows there is a problem." My reply: What could the problem be? When I...

Thanks again Lou! I have that chart as well. I read that if looking for a restriction/obstruction you can actually feel the piping of your system and follow the temps and drops in temps for possible blockage. I am yet uncertain if I even have a blockage. I just came in because it was so hot...

2nd update!!! I put freon in and touching the evaporator I had cold going in to touch and warm to touch coming out. Both sides of the drier were hot to touch and both sides of the condensor were hot to touch. guages showed 300 on the high side and 75 on the low side after freon. The static...

yes it is. I found it and a mess where a mouse had a nest in front of the evaporator

Thank you... my thoughts exactly.

UPDATE So I read in one of the shop manuals I have for this tractor, that the expansion valve is located in the ceiling. LOL so I took the ceiling down and found all of my dye lying in a puddle of dirt. Today I am going to clean everything and attempt to pressurize the system and see if I get...

Ok hmmm valid point so I suspect I have an obstruction? Perhaps the expansion valve? The compressor clutch definitely engaged.

yes it is and the clutch was engaging

Thank you!

Harry we all have to learn someway. And yes I suspected the expansion valve as well.

ok so i did pull a vacuum and it has a slow leak. I have now pulled the headliner after i put some dye in the system and I can't find the leak to save my life. I know it's a slow leak. I put two can's in about 18oz's and got the low side up to about 29psi put still no cool air. The High...

I am trying to bypass the clutch relay on the TN75S but I can't find the relay specific to the clutch on the compressor so I can activate it to recharge a completely drained system. Anyone know where it is located or how can I activate the compressor clutch since it has no freon in the system?

Ok so yesterday I went to back my TN75 into the warm shop and when I pushed in the Clutch pedal it went right to the floor. Any Ideas? Help!

I have seen a number of post regarding the TN series where folks have mentioned pulling codes with a code reading. Anyone have links to some code readers for the TN series of NH tractors? Mine is a TN 75 S.

My tractor is a TN 75 S with Mechanical Shuttle 16f/16r. It has been flashing a 41 code. I have had to jump start the tractor a number of times this winter. I think the battery is dying. Good do a load test tomorrow or monday after its fully charged. My question is what is a 41 code? Could...

Ok I need a new handle for my new to me 75s. I can't find the correct one any where. The door is very difficult to close and I have made numerous attempts at adjusting the post and can't get it to latch without slamming the door a number of times. The right hand door works fine but because of...

My 4 wheel drive quit working while mowing with finish mower. Not sure when it happened or what happened. It seems to go into 4 wheel drive. I can see the shifter working. What do I do first to try and figure out whats wrong?