Automotive Air Conditioning Information Forum (Archives)

Provided by

We've updated our forums!
Click here to visit the new forum

Archive Home

Search Auto AC Forum Archives

Clutch Adjustment 93 Blazer

jcminick on Mon August 04, 2008 7:13 PM User is offline

Year: 1993
Make: Chevy
Model: S10 Blazer
Engine Size: 4.3
Refrigerant Type: R134 Conv
Ambient Temp: na
Pressure Low: na
Pressure High: na
Country of Origin: United States

How do you adjust the AC clutch ? I replaced the compressor w/clutch 3 months ago. All was well until yesterday, when it started blowing hot air, When the clutch did engage air was cold. Upon investigation today, clutch is dragging slightly when not engaged. Did the clutch bearing go bad. Clutch face shows some signs of heat. I guess I'll need to replace the clutch as it may be toast Help!!! THANKS!!! -

GM Tech on Mon August 04, 2008 7:32 PM User is offline

Borrow the clutch puller from Autozone- back clutch off to .020" and be happy-- your bearing is not bad if noise is only heard with a/c off..

The number one A/C diagnostic tool there is- is to know how much refrigerant is in the system- this can only be done by recovering and weighing the refrigerant!!
Just a thought.... 65% of A/C failures in my 3200 car diagnostic database (GM vehicles) are due to loss of refrigerant due to a leak......

jcminick on Mon August 04, 2008 8:09 PM User is offline

The clutch was definately slipping when it tried to engage , so that means the clearance must be made tighter. Yesterday Phoenix temps went past 112, I noticed the poor cooling while stopped at lights, but it didn't recover. When it did get a good "grip" the ac blew cold air, but the clutch shows signs of heating/ slippage. Did the extra temperature stress drive the system pressures higher causing the clutch to slip by being harder to turn? It didn't drag before and did engage firmly, but now with the dragging , I suspect further bearing damage caused by heat due to slipping. I guess where I'm going is that if I replace the clutch, I need to know how to adjust it properly.

Chick on Mon August 04, 2008 8:30 PM User is offlineView users profile

You should get the pressures along with the ambient temp. Make sure your fan clutch is operating properly, was anything added to the system when you changed the compressor like sealers?? but if you just want to change the clutch check this thread on changing front seals, it shows the tools needed to remove the clutch, snap ring holds pulley on..Hope this helps..

PS: 112, i'm surprised anything cools...

Email: Chick


Freedoms just another word for nothing left to lose

Back to Automotive Air Conditioning Forum

We've updated our forums!
Click here to visit the new forum

Archive Home

Copyright © 2016 Arizona Mobile Air Inc.