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  1. H

    1991 HDJ81 A/C Compressor noise and slow spin

    To update this thread for others, my fix was that I simply added an additional shim (multiple shims came with the clutch kit I bought) so that the A/C magnetic clutch actually functions as it should. It has been working fine since I added the additional shim back in early October of 2022. In...
  2. H

    1991 HDJ81 A/C Compressor noise and slow spin

    Well, the plot thickens. I got the A/C compressor clutch replacement kit in (includes a new clutch pressure plate, assortment of shims, two snap rings, the pulley wheel with bearings, and a new stator/coil) and went to replace the clutch related components. Once I removed the pressure plate I...
  3. H

    1991 HDJ81 A/C Compressor noise and slow spin

    For what it is worth, I've decided to replace the clutch in my Denso 471-1433 A/C compressor. I'm pretty sure that the clutch is the problem in this case; given the black gunk that is surrounding the pulley wheel, the odd noise, and the weird jerkiness of the inner wheel when the pulley is...
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    1991 HDJ81 A/C Compressor noise and slow spin

    Thanks @jellis ! I just purchased that Gates v-belt tension gauge, so your timing was impeccable on that suggestion. I don't know if the AC pulley was doing that odd behavior prior to the belt being replaced or not, unfortunately. I will confer with the other 'Mud user to see if his issue is...
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    1991 HDJ81 A/C Compressor noise and slow spin

    I recently replaced the v-belt that runs the Air Conditioning (A/C) compressor on a 1-HDT HDJ81 (1991). I used the correct, OEM belt for the replacement and tried to match the belt tension based on feel. Also, I had a new Denso 471-1433 A/C Compressor installed back in 2017 when the original...
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