Question about Hyundai Sonata
First things first.
Make certain you have all the parts and tools required before you begin...
You will need a torque wrench to properly replace the unit.
Having said this and not knowing which model or year your Hyundai vehicle is. I will say that if your vehicle is not already running on the R134 refrigerant, this would be a good time to make that switch over and upgrade.
If this is what you are considering, the Air Drier/Accumulator would also need to be replaced at this time. This is the cannister usually nearest the firewall with the two A/C hoses/pipes coming from it.
(A/C Compressor - Drier Accumulator - New refrigerant)
You should completely disconnect your battery.
Removing the A/C Compressor will vary in difficulty depending on it's location.
Some A/C compressors are located on the top of the engine, or just off the side and are really easy to exchange. While others are located in more difficult to reach areas, like underneath.
Depending on where your's is located, you may find it easier to first disconnect the hoses on the back as well as the bracket supporting the rear. Then remove the bolts from the from bolt tabs and proceed to manuever it away, as best as possible..
Same process for the old Drier/Accumulator cannister. Dosconnect wire connector, unbolt hoses and make note of it's position, to help with installing the new cannister properly.
(*** IMPORTANT NOTE***)
Some A/C compressors have a SWITCH. This is generally located on the rear head of the A/C compressor and looks more like a cap that is screwed onto the switch cavity plug. You may note this once you remove your old compressor. Remove that and keep, you will (most likely) need it to use on the new compressor.
I mention this because new compressors rarely come with a new switch and all too often people will install their new A/C compressor without swaping that switch from the old to new compressor... In which case, it will prevent the compressor clutch from actually engaging. Hence the result would be no cold air being detected, and a process of chasing fuses and relays begins in order to try and find out what it is and why it is not working...
(***Hopefully you have read and noted the above NOTE, YES, it is that Important***)
There will most likely be instructions in the box with your replacment compressor and I am assuming that you are replacing with new as opposed to used parts.
Installing the new compressor is in the reverse order. Once everything is tightened up and bolted back together.
As you begin filling with the new refrigerant, take note of any air leak or hissing sounds right away. If any noted, make proper adjustments prefore proceeding.
Hopefully you will have found this useful
Good Luck and Happy Motoring
Posted on Jun 14, 2011
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