A/C compressor clutch replacement instructions it keeps blowing the fuse

Tiny
TKP
  • MEMBER
  • 2005 CHEVROLET SILVERADO
  • 5.3L
  • V8
  • 2WD
  • AUTOMATIC
  • 165,000 MILES
Symptoms: My truck's A/C works great for about 20 minutes after initial start up. It goes hot. I can place the truck in neutral while still rolling and shut off the engine and restart it to reset the A/C. It will blow cold for about 7 minutes and lose the cool again. I've tried re-calibrating the actuators. I've set the fan to highest setting and it will hold a colder blow while driving for about 25 minutes before losing the cool. I replaced the A/C High Pressure switch. The A/C blows great with cold air if it remains parked and idle while running. With all the cold air that comes out when it's working, and I mean cold, I don't suspect any low Freon issues because when it's working, it's working great. Could this be an actuator issue? A control panel issue on/behind the dash? Any help would be greatly appreciated!
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Friday, August 2nd, 2019 AT 7:49 PM

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Tiny
JIS001
  • EXPERT
It sounds like the magnetic clutch clearance has worn out. At idle it will be okay until you drive and the engine compartment gets hot causing the clutch to disengage.

With a feeler gauge, measure the gap. Attaching image below. Here is the spec.

Measure the air gap between the pulley and the drive plate. Adjust the shims to achieve a 0.35-0.65 mm (0.014-0.026 in) air gap. Let us know what you measured.
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Friday, August 2nd, 2019 AT 10:30 PM

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