A: Working on any system you must make sure you do the following:
1.Replace accumulator/receiver drier. Contaminants accumulate here and you must replace these items. The desiccant bag in these components once opened will absorbed to much moisture and not work properly.
2.Replace orifice tube or check expansion valve for contamination.
3.The A/C system must be flushed or an inline filter must be installed. Flushing must include condenser and evaporator. IMPORTANT-Compressors contaminated with black oil or any foreign material will not be warranted.
4.When replacing a Ford built FX15 or FS10 or General Motors V5 compressor that has suffered a catastrophic failure, the condenser must be replaced. If the discharge hose assembly is equipped with a muffler, the hose assembly Must be replaced. This is due to the Teflon being disbursed throughout the system. (Black Death) When this happens the only way to get the Teflon out of your system is to replace the item. The Teflon only liquefies once it is heated and therefore you can not flush it out of the system.
5.The proper amount and type of lubricant for the system must be added. After installation, rotate the compressor shaft to ensure no liquid remains in the cylinders. This will lubricate all internal compressor components.
6.Charge the system with the proper amount and type refrigerant. Do not charge the system with pure liquid (R12 or R134a) this could cause the reeds in the compressor to break.

Q: How can I ensure effective operation and performance of the AC?
A: The following steps are highly recommended to ensure effective operation and performance:
1. Check operation of engine-driven fan clutch or electric radiator and condenser fan motor.
2. Check operation of clutch cycling switch or relay and all safety switches.
3. Check for proper operation of cooling system.
4. Check the external condition of the condenser (bent fins, road debris and leaks).
5. Check all drive belts and pulleys for alignment and wear.
6. Inspect Schrader valves and sealing caps. If retrofitting, install proper retrofit fittings.
7. Inspect all hoses and fittings for leaks and repair as necessary.
8. Evacuate system to 29.5 in. HG for 2-4 hours. The system must hold the vacuum before charging.
9. After charging the system, leak test and performance test the system.
10. It is always good to add the proper dye to the system incase you system develops a leak.
11. Check for proper operation of you heater control valve. A faulty valve will allow heat into you cab and will not let the evaporator work properly.
12. Check for proper operation of your fan clutch. If the fan clutch is not working properly your system will not cool down and thus your head pressure will be too high. This will cause the system not to work correctly and premature death of your compressor.

Q: How do you find A/C refrigerant leaks?
A: Two methods are commonly used. Dye and electronic. Dye is most popular but can take several days to appear. Many components are not visible so, the dye can often not be seen. Often shops charge for refrigerant and Dye and tell you to come back in a few days. This works but costs you time and more money for refrigerant. Electronic detectors are quicker to pinpoint leaks and minimize the loss of refrigerant.

Q: Is It Correct that 134A will not cool as well as R-12?
A: Thousands of cars and trucks have been converted. Feedback has been extremely positive. Slightly longer cool down times have been the only differences noticed by some customers. Some vehicles should not ever be converted. If you car or truck has a copper plate and fine condenser and evaporator we would suggest that either you switch out these components to a higher efficient model or return back with R12 into the system.

Q: My compressor leaks - must it be replaced?
A: Not always. If a compressor w/low miles leaks, quite often it can be repaired.

Q: What Is The Model Number Of My AC Compressor?
A: The manufacturer name and the model number of your AC compressor can be found on the label of the compressor. Before purchasing an AC compressor, please match the model number with the compressor you want to purchase.