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99 Chevy Silverado

jgcox6 on Thu June 19, 2008 3:23 PM User is offline

Year: 1999
Make: Chevy
Model: Silverado
Engine Size: 5.3l
Refrigerant Type: 134
Country of Origin: Belgium

Hey guys here we still go...to update. truck compressor starts and works fine for a time (like when the vehicle has been operating for about 10 minutes) it then will shut off. IF you get out and tap the compressor, it works fine for another few minutes. We have replaced the low pressure cutoff switch. We have since evacuated, vacuumed and refilled the system just to know what we had. We also have attempted to adjust the clutch gap. We used the tool to "press" the gap closer...to what we believed to be .020. I had asked the question about the proper use of the clutch tool...Don't you have to hold the Clutch and screw the "big" nut clockwise to get the gap to close..I thought we were doing it right by holding the "small" nut and adjusting the "big" nut clockwise..but never seemed to close it..so we held the clutch with a tool and screw the big nut in. I also read that the gap can be .010 to .04 right? Well since it it still doing it...should I close the gap to .01? and do I do that by holding the clutch and adjust the big nut? Help me guys this silly truck is still shutting off when it gets warmed up...I can turn the switch off for a few minutes and it will start back up.

Chick on Thu June 19, 2008 5:05 PM User is offlineView users profile

The tool screws on the center of the shaft, and the big nut turns to close the gap. You can't guess at it, use a feeler gage or business card as the pic in this thread show. you might have a weak coil causing the problem if the clutch gap is properly adjusted, but it sure sounds like to wide a gap...let us know..

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Chick
Email: Chick

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Freedoms just another word for nothing left to lose

jgcox6 on Fri June 20, 2008 8:26 PM User is offline

Do you have to hold the small nut with a wrench while turning the big nut? i guess that is what I am not really understanding..seems like the clutch turns when i do that..

Chick on Fri June 20, 2008 8:30 PM User is offlineView users profile

Yes, hold it so the clutch doesn't turn..Then you can close the gap..Hope this helps..



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Chick
Email: Chick

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Freedoms just another word for nothing left to lose

Edited: Fri June 20, 2008 at 8:32 PM by Chick

jgcox6 on Sat June 21, 2008 5:46 PM User is offline

Thanks Chick...you are awesome...I needed pics and we thinking of asking, but you read my pea brain. Thanks for clearing that up for me...I am going to close the gap to .010 and see what happens. Let's just say I do that and it still disengages after it warms up...what would be the next suggestion?

Chick on Sat June 21, 2008 5:57 PM User is offlineView users profile

If it still does not engage, not the low side pressure when it does, also you will need to check the coil.., and see if power is getting to the coil when the event happens. Could be a bad relay causing the same problem, so knowing if power is there when it happens would be the next step..Hope this helps..

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Chick
Email: Chick

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Freedoms just another word for nothing left to lose

jgcox6 on Sun June 22, 2008 6:35 PM User is offline

I can't get to the connector without getting chopped or burned...while the engine is running.. But I can say that I have gotten out of the vehicle and barely tapped the clutch with something and it engage and work fine for a few minutes and then have to do it again.. I am assuming that it engaging when i tap it shows that it has voltage to it..

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