A/C Compressor Clutch Reshimming
#1
A/C Compressor Clutch Reshimming
Once compressor is off set it like the following pic and remove the 10mm screw in the middle of the pulley.
Then carefully remove the outer part of the Clutch.(There is a special tool which I didn't have I used to screw drivers but be careful)
Then either the shims will come out with the outer peice like mine did or they will be sitting on the shaft once the outer part is removed.
If you look closely the washers/shims are different thicknesses. You will need to Measure the thickness and then find one a little thinner and reinstall and check the Gap between the outer and inner part of the clutch.
I will have to find out the exact specs but I believe it needs to be .016 Cannot be more than .020.
Use a fueller gauge to measure the gap.
Hopefully this helps.
If you have any questions feel free to ask.
Compressor Specs: Gap should be between .3MM(.012Inches) and .5MM(.020Inches)
.6mm(.024) should not fit in at all
Then carefully remove the outer part of the Clutch.(There is a special tool which I didn't have I used to screw drivers but be careful)
Then either the shims will come out with the outer peice like mine did or they will be sitting on the shaft once the outer part is removed.
If you look closely the washers/shims are different thicknesses. You will need to Measure the thickness and then find one a little thinner and reinstall and check the Gap between the outer and inner part of the clutch.
I will have to find out the exact specs but I believe it needs to be .016 Cannot be more than .020.
Use a fueller gauge to measure the gap.
Hopefully this helps.
If you have any questions feel free to ask.
Compressor Specs: Gap should be between .3MM(.012Inches) and .5MM(.020Inches)
.6mm(.024) should not fit in at all
Last edited by rspi; 08-08-2011 at 09:07 PM. Reason: typo
#2
RE: A/C Compressor Clutch Reshimming
Tech... excellent post. Just to clarify, I should be measuring between the clutch surfaces, and I'm guessing the gap will be bigger than the spec (due to clutch wear) thus, going with a thinner shim will bring it back into spec?
Wear would I get the correct shims? Thanks - AB
Wear would I get the correct shims? Thanks - AB
#3
#5
#8
RE: A/C Compressor Clutch Reshimming
A 30 minute job put my 96 850 AC clutch back in order. I had heard that if AC is on, compressor wheel is turning but will not engage, I could take a broom stick and lightly push it against clutch plate wth motor running and AC on at lowest temperature setting. If clutch plate kicks in and engages the compressor, them shimming is needed hold plate clearances within spects. I jacked up the right front, put in a safety jack stand,and working from underneath, I checked the clearance. It was 30 thousands over spects. With Simple Green and water ,I cleaned the clutch face and blew it dry. Working from underneath(which gives access to the clutch) and using a screwdriver to lift the existing spacing tabs, I inserted a small, bread bag tie clip size and thickness, shim under each tab and secured them in place with epoxy. Some use crazy glue. This is hold shims in place when clutch is not engaged. A recheck showed spect. clearance and the AC works perfectly. This may not be Mfg's recommendations; however, it worked for me and saved dismantling the clutch assembly.
#9
#11
#12
#14
#16
#18
worldbound4now
Those two treads may help you,
https://volvoforums.com/forum/volvo-850-16/newbie-c-question-31774/
https://volvoforums.com/forum/volvo-850-16/c-does-not-cool-good-when-hot-31761/
Those two treads may help you,
https://volvoforums.com/forum/volvo-850-16/newbie-c-question-31774/
https://volvoforums.com/forum/volvo-850-16/c-does-not-cool-good-when-hot-31761/
#19
worldbound4now
Those two treads may help you,
https://volvoforums.com/forum/showthread.php?t=31774
https://volvoforums.com/forum/showthread.php?t=31761
Those two treads may help you,
https://volvoforums.com/forum/showthread.php?t=31774
https://volvoforums.com/forum/showthread.php?t=31761
#20
More AC A/C Compressor, Low Sensor, High Sensor Pics at: https://volvoforums.com/forum/album.php?albumid=156
Last edited by rspi; 08-08-2011 at 09:18 PM. Reason: spacing - pics