meir
OBS Enthusiast
Hi guys.
I’m in the process of replacing the A/C condenser on my truck, along with a new dryer, orifice tube, and O-Rings on all connection.
Didn’t give it much thought, but during research I understood my truck (89 K1500) is running R12 refrigerant. By Looking at the system it looks like it was already converted to 134a at some point.
Not knowing if to correct oil was use, and the fact that the compressor was not changed (R4 compressor), I will go with the Ester oil, that is compatible with both R12 and 134a.
https://shop.advanceautoparts.com/p...e-32-8-fl-oz-py-7/7060394-P?searchTerm=ac+oil
it is also at the same viscosity needed for the R4 compressor.
From reading about the subject, it sounds like the 134a is not as efficient as the R12, and requires a new compressor and a larger condenser. At this point, I will stick with the compressor I have, and the new condenser is already installed.
This is the condenser I got:
https://www.amazon.com/gp/product/B000CKOW02/ref=oh_aui_detailpage_o08_s00?ie=UTF8&psc=1
I plan on adding an electric fan to it, that will circulate with the compressor.
The questions I have are as follow.
1. Where is the orifice tube located on the 89 trucks?
I did not see it on the line going into the evaporator.
2. What’s your take on this Freon as an alternative to the 134a?
https://www.amazon.com/Cans-REDTEK-...rd_wg=7EzIG&psc=1&refRID=J95D5FG5DZKK600WKYGA
3. according to shop manual, i will need to add 5oz of oil.
do i just pour it into the dryer? i assume if i pull vacuum, it will suck the oil out.
am i missing something?
any other input would be greatly appreciated.
Thanks in advance.
Meir.
I’m in the process of replacing the A/C condenser on my truck, along with a new dryer, orifice tube, and O-Rings on all connection.
Didn’t give it much thought, but during research I understood my truck (89 K1500) is running R12 refrigerant. By Looking at the system it looks like it was already converted to 134a at some point.
Not knowing if to correct oil was use, and the fact that the compressor was not changed (R4 compressor), I will go with the Ester oil, that is compatible with both R12 and 134a.
https://shop.advanceautoparts.com/p...e-32-8-fl-oz-py-7/7060394-P?searchTerm=ac+oil
it is also at the same viscosity needed for the R4 compressor.
From reading about the subject, it sounds like the 134a is not as efficient as the R12, and requires a new compressor and a larger condenser. At this point, I will stick with the compressor I have, and the new condenser is already installed.
This is the condenser I got:
https://www.amazon.com/gp/product/B000CKOW02/ref=oh_aui_detailpage_o08_s00?ie=UTF8&psc=1
I plan on adding an electric fan to it, that will circulate with the compressor.
The questions I have are as follow.
1. Where is the orifice tube located on the 89 trucks?
I did not see it on the line going into the evaporator.
2. What’s your take on this Freon as an alternative to the 134a?
https://www.amazon.com/Cans-REDTEK-...rd_wg=7EzIG&psc=1&refRID=J95D5FG5DZKK600WKYGA
3. according to shop manual, i will need to add 5oz of oil.
do i just pour it into the dryer? i assume if i pull vacuum, it will suck the oil out.
am i missing something?
any other input would be greatly appreciated.
Thanks in advance.
Meir.
Last edited: