You’ll need the following tools:
Jack and jack stands
Step 1: Find the snake belt tensioner. If you have difficulty finding a tensioner, please consult the belt layout drawing. It can usually be found on decals placed somewhere in the engine compartment or in the vehicle maintenance manual.
Step 2: Rotate the tensioner. Use a socket or wrench to slide the automatic tensioner off the belt. Whether this is clockwise or counterclockwise depends on the route of the vehicle and belt. Note: Some tensioners have a square hole for inserting the end of the ratchet, rather than the bolt head for the socket or wrench.
Step 3: Remove the belt from the pulley. While keeping the tensioner away from the belt, slide the belt away from the pulley.
Step 4: Disconnect the electrical connector from the compressor. These should be easy to pull out.
Step 5: Disconnect the pressure hose from the auto ac compressor. Use a ratchet or wrench to disconnect the pressure hose from the compressor. Plug in to prevent system contamination.
Step 6: Remove the compressor mounting bolts. Use a ratchet or wrench to remove the compressor mounting bolts.
Step 7: Remove the compressor from the vehicle. It should be a bit pulling, but be careful because it is usually heavy.
Step 8: Prepare a new car ac compressor. Compare the new compressor with the old compressor to make sure they are the same. Then remove the dust cap from the new air conditioning compressor and add a small amount of the recommended lubricant (usually about ½ ounce) to the new compressor. Most compressors use PAG oil, but some compressors use polyols, so it is important to determine which compressor to use in a vehicle. In addition, some compressors come with installed oil. Read the instructions that came with the compressor.
Step 9: Replace the pressure line O-ring. Use a small screwdriver or a pick to remove the O-ring from the air conditioning pressure line. Some compressors will come with replaceable O-rings, or you can get replacements from your local auto parts store. Slide the new O-ring into place.
Step 10: Put the new compressor in the vehicle. Place the new compressor in the vehicle and align it with the mounting holes.
Step 11: Reinstall the mounting bolts. Reinstall and tighten the fixing bolts.
Step 12: Reinstall the wiring. Reinstall the pipeline and tighten the pipeline bolts.
Step 13: Reinstall the electrical connector. Reinstall the original electrical connector.
Step 14: Place the belt on the pulley. Place the belt on the pulley according to the belt routing diagram to ensure that the belt is routed correctly.
Step 15: Install the new belt. Push or pull the tensioner to a position that allows the belt to be installed on the pulley. After the belt is in place, you can loosen the tensioner and remove the tool.
Step 16: Ask professionals to recharge the system. Professionals charge the system.