Hey how is it going do it yourselfers, in this video I am going to show you how you
can diagnose and fix problems with your cars AC compressor.
Whether you are having problems with your AC compressor clutch, your AC compressor pulley
and bearing or your AC Compressor coil today I am going to show you how you can test and
replace all of them.
Alright so first we will start with the AC compressor clutch coil, alright so if you
want to test your coil what you you'll need first is a twelve volt power supply.
Next you want to remove the connector that goes to your compressor and than if you got
two wires you want to make sure which one is which on this one black one is going to
be ground and the white is going to be our voltage.
Now if your AC compressor only has one wire going to it instead of two that means that
one wire is where you are going to get your twelve volts.
And that your compressor is grounded through the body of the compressor through your engine
so you want to get yourself some jumper cables and attach to the compressor and the negative
side of the battery if you are bench testing this.
And next when we make our connections we should see the AC compressor clutch engage.
Here is a closer shot, and now with this engaged when I turn the pulley the clutch turns with
the pulley.
And when it's disengaged only the pulley turns.
Alright next lets cover some clutch and bearing problems, so what you wan to do is to remove
your belt, and than play with your clutch make sure there is no excessive play or noise,
it's not lose than want you want to do is to spin your pulley and listen to the bearing
that's inside there if you hear any rumbling or any kind of noise or play from the pulley
than that could indicate a problem with the bearing that's inside this pulley and that
means you need to replace it.
Now the good news is if you need to replace the clutch the bearing, the pulley or the
coil for your AC compressor you don't need to replace your AC compressor, you can just
purchase those parts separately and remove and replace them as I am about to show you.
And even better news is you don't need to evacuate your AC system you can just leave
the lines attached to your AC compressor, but if you don't have enough room in front
of your AC compressor to work on these you can just un mount your AC compressor which
is going to be usually attached to a bracket or your engine by four bolts and then just
slightly move it around with the AC lines still attached to it, as long as you don't
pull on this really hard or you know pry against these lines you are not going to have a problem,
you can just undo these bolts and move this to a place where you have some room that you
can work on the your AC compressor clutch and pulley.
Alright the first step is to remove this bolt, now and impact gun would easily take this
out, but usually you can remove it with a solid ratchet and a socket as well if you
do this.
Basically put your ratchet on here, and than hold it in with one finger, than get a hammer
and give it good solid wack, like that.
You might have to do this a couple of times, but it usually comes loose after a couple
of tries, there.
Alright next we are going to remove our clutch just by pulling on it but be careful as you
are pulling this out because there is going to be spacers between your clutch and the
shaft for you AC compressor that you don't want to lose and as long as you go nice and
slow you can usually see the spacers and save them.
And here is a look at our clutch and I don't know if you guys can tell but there is a spacers
right in there.
There it is we just got one for this one, but sometimes there is a bunch of them and
they are a lot thinner than this so make sure you don't lose them.
Alright here is a look at our compressor pulley, there is a bearing in side of this and this
is the contact surface, this is the contact surface where it engages our clutch.
Alright now in order to remove this pulley first we need to remove this snap ring.
Alright so go ahead and grab your snap ring pliers, and removing these is usually pretty
straight forward, like this.
Alright next if you are luck you can just pull on this pulley and it will slide off
the compressor but generally speaking you are usually not going to be that lucky.
So what you want to do next is to grab yourself some penetrating fluid, and spray it all around
here, next if you have enough swing room you can get a rubber mallet and hit the back of
the pulley, and you know just hit it a couple of times turn it, hit it a couple of times
turn it, that way it comes out evenly and it doesn't bind inside here.
If that doesn't work you can just rent yourself or buy a two or three jaw puller, and this
way you can put this around the pulley, and you would screw this in and that's going to
pull this pulley and remove it.
But I believe, I can remove this pulley with just a rubber mallet.
There we go.
Alright so here is a look at our pulley, and here is our bearing, see this guy this is
our compressor bearing that's inside here, now if you have a bad bearing and need to
replace it, replacing this is very easy, you just get a socket, put it on top here on this
end, than you use a hammer to knock out this bearing and than when you get your new bearing
you put it on this end, but you are going to need another socket that's the circumference
of the outer lip of the bearing, that way you are pressing on the outer lip of the bearing
when you are hammering it.
Cause if you press on the inner lip or on the center piece, you could damage the bearing
so you need a socket that's exactly the circumference of the outer lip of the bearing, and than
you can just hammer that in and it usually goes in without much fuss at all, and that's
pretty much it.
Also if the auto parts store can not find you a bearing for whatever reason for your
air compressor, you can just go try to find one off the numbers that are on these bearings.
Alright and here is a look at our stator or coil for our ac compressor clutch and there
you can see the two wires that go to it from this connector.
And this is basically held in by another snap ring that's inside here.
Alright once again with everything out and about it's going to be easier to show you
how this works again, so again the coil is going to be inside your pulley, it's going
to ride very close to the pulley without touching it ok so this pulley is sitting in like this
all the way in I am not going to be able to get it all the way in right now but you guys
get the picture that coil is inside here and than when that becomes activated it creats
a magnetic field that pulls on your clutch which is riding out here, now your clutch
is what's connected to the shaft of your air compressor and that's the one that turns with
the shaft, so when this becomes activated it pulls on this clutch and connects it to
your pulley than these two turn together and than therefore turn the shaft that's inside
your ac compressor.
Alright now before we remove our coil we are going to disconnect this connector from it's
bracket, usually takes some fidaling around.
So again we grab our snap ring pliers, and get it out of there, here we go.
Now we should be able to pull this out easily, there.
Now putting everything back together should be just the reversal of removal, but you want
to pay special attention to a couple of things.
On this coil for example if you get a new one make sure you line this pin up with this
hole here otherwise this is not going to go in even, so when you get the new one make
sure its sitting nice and flat against the compressor and that pin is lined up with that
hole.
Also if there is any sign of rust or corrosion on any of these snap rings make sure you replace
it, you don't want these to brake or come loose sometime in the futures.
Also at the end when it's time to install this bolt that attaches your clutch to your
compressor, make sure you use some blue thread locker on this, and you can tighten it using
the hammer method but make sure you do it a couple of times and make sure it's nice
and tight when you put it on the compressor.
And last but not least don't forget the little spacer that goes inside your clutch, now this
spacer again creates a specific amount of space between your clutch and the pulley and
it's important to check that space after you call this repair finished, now this video
was more of a general video on how your compressor works and how you can diagnose problems with
all the different components but if you want a more detailed more specific video on how
you can diagnose problems and replace the clutch and the bearing and the pulley, I will
put a link to a video I did about a year and a half ago on this side of the screen, I'll
also put some other links to some other related video's that you might find interesting and
I recommend you check them out but if you liked this video please don't forget to give
it a thumbs up, subscribe if you want to see more like it and I'll see you next time.
Thanks for watching.