Posted by longmeadowfarm on July 23, 2018 at 12:07:12 from (24.29.81.155):
Re: Air conditioner problem
Tractor: New Holland T4.75 ( 2013 model year)
Given: Tractor has 1850 hoursÉÉgive or take Air conditioner blows very cold air when initially starting upÉand working Air conditioning system was checked for proper refrigerant levels and pressure..all OK per dealer All 4 air filters are clean and are cleaned regularly..per operators manual. All four air filters are original.. not changed as per 1200 hr service/replacement interval.Éper operators manual.
Operation: Air conditioner starts out strong and over time the cold air becomes increasingly warmer until it stops blowing cold air. Air conditioner air flow seems to degrade, along with blowing warmer air. I shut the compressor off and turn the blower up a notchÉ this action results in an increasing flow of warm to very cold air for up to 3-5 minutes. It seems that air flow increases during this Òcompressor offÓ cycle The cycle of cold/warm/cold air changes from the number 2 to 3 fan setting. The cycle can be as short as 5-10 minutes in fan position 2 to perhaps a long as 20-25 minutes as was the case yesterdayÉ.in fan position 3.
Additional info Aa acquaintance of mine told me it would seem to be an air flow problem and to check for a plugged evaporator or duct. As the evaporator and air duct system is ÒclosedÓ I doubt it is an airflow problem associated with a dirty evaporator or a mouse nest in an air duct. BUt it just could be that my filters need changing..
Another friend said it might be a high pressure sensor thatÕs not turning the compressor offÉ .. resulting in evaporator Òfreezing upÓ.
The New Holland Dealer told me everything is okÉ had the tractor in the shop for some repair workÉ. and then proceeded to insult me when I asked the service manager to diagnosis the problem that he couldnÕt replicate. Said he wanted to ÒvacateÕ the system and put all new refrigerant back inÉ I asked why??? .. got some blank stares. I asked if replacing the high pressure sensor was intrusive.. as some systems have a check valve so as not to lose refrigerant .. et al.. as I said I wanted to do the job myself.. never got back to me.
I took my challenging problem to a Case/IH dealer as they sell the same tractor..just a different color. They looked over the written explanation I submitted and said something like I didnÕt know what I was talking aboutÉ.and inferred that the system wouldnÕt do that which I reported.
Upload one or more videos to your post. Photo filesizes should be less than 300K and Videos, less than 2MB. Formats allowed are gif, jpg, png, ogg, mp4, mov, and avi. Be sure to use filenames without spaces or special characters, and filetypes of 3 digits lower case.
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - The Tractor Parade: Story of a Case SC - by Bernie DeLon. On a early fall morning back in 1994, I opened the newspaper and happened to spy an article about a local antique tractor club having their annual show that weekend.
... [Read Article]
Latest Ad:
Sell 1958 Hi-Altitude Massey Fergerson tractor, original condition. three point hitch pto engine, Runs well, photos available upon request
[More Ads]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.
