Quick AC Problem, Clutch I think?!?!?!?

[49erRider]

Well after a lot of troubleshooting with my AC theres one more thing i want to try.

I had a leak replaced the evaporator, the good news is the 134a is holding at a good level so I think I took care of that. Bad news is the air gets warm after about 10-15 minutes and won't cool down until the Jeep cools down.

Heres my thought, I read a lot of threads about there being to many shims so I thought I would remove one. I just want to make sure I"m going about this the right way.

I take the center nut off, which I need to find some way of keeping that plate from spinning, any suggestions? Then once that nut is off I should just be able to pull that bolt out right, then just remove a shim?

Also I broke the radiator fan shroud in the process, anyone have an extra or know how to get that thing out without breaking it?

Thanks a lot guys!

Brad

 

[49erRider]

Just looking to see if once I take that nut off if that will allow me to slide the piece out and remove a shim.

Thanks

 

[Saudade]

Not quite.

http://www.sanden.com/index.php?id=MTExOTk3OTEwNw6

Remove the compressor mounting bolts and tip the front upward. You do not need to evacuate it.

What did you do to fan?

 

[49erRider]

Not sure what you mean about the fan?

But in order to remove a shim I just need to remove mounting bolts, then that center bolt?

Thanks a lot guys this really helps.

Brad

 

[sjx40250]

Yes. The center bolt needs to be removed. To hold the pulley, wrap the belt around it and let it double on itself and hold the end to keep it from rotating. Like a oil filter wrench that wraps around the body of the filter.

the shims should be part of the mounting between the clutch and clutch plate.

 

[Saudade]

The link above is for the sanden service manual. It will have the procedure for adjusting the air gap (what the shims actually do).

The corner of the blade on the fan looks bent over.

 

[49erRider]

Man I've never even noticed that fan blade. I have no idea how that happened.

 

[kellen]

Lets bump this, as I am about to attempt this on my 2000.

So my jeeps AC is cold, then dies 15 minutes later. Shim is coming out.

So I take the serpentine belt off, then I use a strap wrench to hold it so the compressor doesn't slip, removing the center nut.

Now the mounting bolts are removed, just to make it easier to pull out the plate? Then right behind it are the shims. Remove one, reassemble and done?

Anyone done this? I have searched my butt off, but nobody has reported how they did it or specifics.

 

[Saudade]

The Sanden manual above has it.

 

[49erRider]

Lets bump this, as I am about to attempt this on my 2000.

So my jeeps AC is cold, then dies 15 minutes later. Shim is coming out.

So I take the serpentine belt off, then I use a strap wrench to hold it so the compressor doesn't slip, removing the center nut.

Now the mounting bolts are removed, just to make it easier to pull out the plate? Then right behind it are the shims. Remove one, reassemble and done?

Anyone done this? I have searched my butt off, but nobody has reported how they did it or specifics.

Way easier than that.

Go to Autohell and rent one of these:
http://www.autozone.com/autozone/ca...d=1211-10&displayName=A/C+Clutch+Holding+Tool

Then use that to keep the clutch from spinning and remove the center bolt. Once that is off the front plate just slides off revealing the shims. I only had one in there took it out and its been fine ever since.

I did measure the gap with a spark plug gap tester and that let me know it was out of spec. Let me know if that doesn't answer it.

 

[m42duster]

Not quite.

http://www.sanden.com/index.php?id=MTExOTk3OTEwNw6

Remove the compressor mounting bolts and tip the front upward. You do not need to evacuate it.

What did you do to fan?

On my 2000 4.0, I just removed the center nut, pulled the plate and removed one shim (it only had one). I was able to do this WITHOUT removing any mounting bolts on the compressor, serp belt, fan, etc. The whole process took less than 10 minutes. I didn't have a clutch holding tool, so I used a long gasket scraper with a square shaft to keep the plate from spinning. I just held it flush so it would catch on those round protruding thingies. Now my air is superb.

 

[bryceyoda]

On my 2000 4.0, I just removed the center nut, pulled the plate and removed one shim (it only had one). I was able to do this WITHOUT removing any mounting bolts on the compressor, serp belt, fan, etc. The whole process took less than 10 minutes. I didn't have a clutch holding tool, so I used a long gasket scraper with a square shaft to keep the plate from spinning. I just held it flush so it would catch on those round protruding thingies. Now my air is superb.

me too i did the same fix!

 

[kellen]

So remove fan shroud, remove belt. Then undo clutch bolt?

 

[QUABOAG]

Be mindfull. I got my compressor clutch working by pulling the clutch plate and taking out the shim. Was super easy, just used a scewdriver to lever against the rivits when i removed the nut, and pried out the clutch with a couple of screwdrivers. 100 miles later, i noticed the clutch was dragging even when the ac was off and the bearing got toasted. Now i have a new compressor. Good luck!

 

[iwannadie]

I don't know what you trouble shot so far...

Have you checked the temperature switch, I forget the proper name. Whatever the switch is that connects to the drier.

I had a problem where the AC would work perfect then not blow cold air until I turned it off for a while. Turned out to be that switch and it was pretty cheap from the dealer.

Edit:
oops, old thread. I remember seeing that picture with the crazy looking fan blade before...