Re: Tractor AC compressor

Posted by Texasmark1 on July 23, 2020 at 05:33:12 from (172.243.92.145):

In Reply to: Re: Tractor AC compressor posted by Texasmark1 on July 23, 2020 at 05:04:29:

Now that we are getting some responses here and some thoughts: The leak sealer product can only held a few oz of sealer and the rest propellant....can size about the same size as the little 134a 2 oz oil additive can for a system that has a 45+ oz freon fill.

Upon removing the dryer, I was curious as to the makeup of a dryer and the contents; shape was 2 1/2 D x 8" L. Contents were an open cylinder with a pair of horizontal discs, with one layer of 1/16"balls (assumed to be the desiccant.....not nearly as much as I was expecting) sandwiched between 2 perforated plates situated about midway down the cylinder. Coming up from the bottom of the cylinder was a tube in the center of the discs extending to the top. I'd assume the inlet was into the cylinder and the outlet was via the tube...lost track in the disassy as to which was which. In the bottom (cylinder vertically mounted) was some ref. oil and probably a tablespoon full of tiny crystal (reflective) chip looking things, not some kind of goo as I was expecting.

I am under the opinion that I have a clog preventing the movement of freon through the system thus the reason for absolutely no cooling, and no temperature rise of the condenser coil. Being a closed system, I "think" i can understand that if you are pulling against a blockage, you have no product to compress to the point of over pressuring the high side against blockage. I have also seen in you tube videos that the passages on the condenser were partially blocked and passing the non contact infrared thermometer across the condenser coil gave different temperature readings giving the location of the blockage. The narrator went further to explain that the passages are small and to attempt to clean one is a waste of time and one should just replace it. I really think that those little granules weren't sufficient in quantity to block the evaporator or the condenser.

I keep thinking that the expansion valve is the culprit, but if so, how can I shut off the engine and the pressures are equal in 2 minutes, exponential decay?

More ideas? Thanks

Replies:

• Re: Tractor AC compressor Texasmark1 06:38:53 07/23/20 (0)

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