ac clutch grinding
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Senior User
Joined: Sep 2007
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From: Haughton La
ac clutch grinding
I am having a problem.It is a grinding noise that I think is the ac clutch.I thought I had remebered someone talking about "shimming"it but can't seem to find it.Is it possible?
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Joined: May 2009
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From: Canton, Georgia
If you shim it too much, the clutch won't engage.
Remove the bolt at the end of the compressor,& remove the clutch "shoe". The shim is a shall thin washer that fits between the "shoe" & the compressor shaft.
HINT: A little dab of grease will hold the shim in place while putting it back together, & NO, the belt does not need to come off.
Remove the bolt at the end of the compressor,& remove the clutch "shoe". The shim is a shall thin washer that fits between the "shoe" & the compressor shaft.
HINT: A little dab of grease will hold the shim in place while putting it back together, & NO, the belt does not need to come off.
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From: Haughton La
Yes it does it with the clutch engauged or without it engauged.At first I thought it was one of the idler pully or tensioner pullies but changed them all with no luck.I can spray pb blaster in the back side of the clutch and it will quite down for a few seconds.
Hotshot
Joined: Jan 2002
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From: La La Land
Here's a test:
https://www.ford-trucks.com/forums/5...ml#post4464164
But it may be your compressor's input shaft bearing, too.
Pop
https://www.ford-trucks.com/forums/5...ml#post4464164
But it may be your compressor's input shaft bearing, too.
Pop
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From: Haughton La
That was my thought also .Does a new clutch come with a new bearing?If not can the bearing be changed with everything on the truck and will the freon be lost?
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From: Haughton La
The thread referred to above does not sound like my problem .My clutch seems to engauge fine it just makes quit a bit of noise
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Post Fiend
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From: Blairsville,Ga
To be honest I don't remember,maybe someone will come along that has worked on one recently
Hotshot
Joined: Jan 2002
Posts: 17,988
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From: La La Land
If you need to replace the entire compressor, you need to reclaim the refrigerant (legally, anyway), then get the refrigerant o-rings that seal the connections.
Then, you need to find out how much oil you are removing from the system with the old compressor, and add it back to maintain the correct amount. This might be also a good time to consider a new accumulator/filter/dryer assembly (and those o-rings, too).
Then, you really SHOULD get a set of gauges and at least borrow a vacuum pump sufficient to pull a deep vacuum for at least an hour. Then, you need to determine if you can maintain that vacuum (any leaks in the sealed system?), and only THEN do you re-charge the system with the prescribed amount of refrigerant R-134a.
Whew!
But...., you CAN do this yourself, and save a bunch-o-bux!
Pop
Then, you need to find out how much oil you are removing from the system with the old compressor, and add it back to maintain the correct amount. This might be also a good time to consider a new accumulator/filter/dryer assembly (and those o-rings, too).
Then, you really SHOULD get a set of gauges and at least borrow a vacuum pump sufficient to pull a deep vacuum for at least an hour. Then, you need to determine if you can maintain that vacuum (any leaks in the sealed system?), and only THEN do you re-charge the system with the prescribed amount of refrigerant R-134a.
Whew!
But...., you CAN do this yourself, and save a bunch-o-bux!
Pop
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