Can you install an A/C bypass pulley without discharging the refrigerant?

Asked by Apr 04, 2014 at 11:35 PM about the 1997 Chrysler Town & Country LX

Question type: Maintenance & Repair

my a/c bearings went out and melted my serpentine belt.   I purchased a bypass kit thinking I wouldn't have to have the expense of taking my van to the shop to mess around with the refrigerant.  I don't need an a/c...I live in Washington state ;-) Can anyone tell me if it is possible to install the bypass unit without messing with the refrigerant?

7 Answers

111,155

By pass pulley takes the place of the ac compressor. The compressor has to be removed to install the by pass.

10,245

As Dandy said. I doubt there is room to safely secure the compressor in the engine bay once you pull the a/c and install the by-pass. BTW the R-134a will vapourize once the pressure is reduced to atmosphere. Use gloves and remove the fill cap put a small rock in the cap and thread the cap back on until the gas starts escaping. Once the gas has bled out the a/c compressor can be removed. This chemical is used in some brands of electronic air duster cans so you releasing it to atm is no different than blowing out a few computers. IMO

1 of 1 people found this helpful.
145

Wouldn't it be simpler to go to NAPA and get a shorter serpentine belt; by passing the mounted ac comp. entirely?

111,155

In some cases just using a shorter belt will work but i have tried that several times and most of the times I would have to modify idler or tensioner pullies in some shape or form to get the belt to clear(miss hitting) itself when routed without ac in the loop. I have found that installing an ac by pass is much easier.

I've successfully fit shorter belts on a number of vehicles. Some even allowed the compressor to remain in place, but... You NEED to trace your new routing vs. the original, and make sure that the water pump won't be run in reverse! Can't see that working out real well.

Intentionally venting your refrigerant to the atmosphere is illegal. Take it to a shop and ask them to evacuate the system.

Once your system is evacuated, you can safely remove the compressor and bolt in the bypass and use the belt. Also remember to tell stores when you get a replacement belt that you HAVE a/c or you will get the wrong belt. If you cap your refrigerant lines, it will save the condensers and lines for future reinstallation should you decide to fix.

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