This guide will not be an extremely detailed how-to but it will provide enough grounds to accomplish this task. Before I begin I will say that 2 steps are missing and will not be included. One of the steps that will not be included will be the step that shows you how to remove the splash guard that goes under the your engine basically. It does what the name implies. It protects all the parts like the engine, battery, fuses, etc. from contact with water. I won't show this step because my Jetta didn't have a splash guard. I know. The other step that will not be included is the step called the "ac flush". In this step you just flush the ac lines with a special fluid called "ac flush" but these I didn't include because I had to take it to a mechanic to do that part since I didn't have the required tools and disposal. You are apparently not to dispose ac fluid into the ground, drain, etc. because it is against the law, just like oil.
Step 1: Components Needed
Step 2: Tools
- a wrench and socket set with range (10 - 19 mm)
- a hex socket set
- a Tap and Die set (Not needed. Read below for details)
The tools you need are relatively easy to get and you probably have them.
In your wrench and socket set you will mainly need the 13 mm Pt. I believe so make sure you have that one. Also it wouldn't hurt to have extensions.
In your hex socket set you will mainly need the
The last item is a Tap and Die set and you do not need this. ONLY use this item only if you smear the grooves on the bolts or the grooves on the expansion valve or any other grooves (which I did since I am so good so I used this to fix my problem. You can use this for anything really. For example if you have a solid steel rod which I did at one time I used this to make grooves on my steel rod and I put a but in the other size and wallah talk to me)
Step 3: Remove the Front Bumper and Grill
Just pop open the hood, and look at the screws holding the front of your Jetta. Remove those and just look around at the what screws are holding the front in place. You will notice that there are 2 right in the front that are very obvious. There are also some screws where the wheel is located. Remove only what you have to. Use your common sense. It is not hard trust me.
When your done it should look like what i have in the picture.
Step 4: Locate the Compressor
REMEMBER that your AC is connected to a belt so what you want to do is take that belt off.
What you do is you loosen up the pulley shown in the picture. This is the part responsible for providing pressure to the belt to tighten it. So just get a wrench and torque it (don't remember which way) and there you go.
Step 5: Unscrew the Bolts
Step 6: Remove and Replace the Expansion Valve.
The expansion valve is located behind your engine. Look at the pictures below. Remove this and replace it with your NEW expansion valve.
Note: Make sure you use the NEW O-rings and that you properly install them. This is a good step.
Step 7: Replace and Replace the AC Receiver Drier
Look at the pictures below. This shouldn't be that bad.
Step 8: Put Everything Back Together
Once you flush your lines start connecting everything back together. Just as you took it apart you can put it back together.