Engine Size: 350
Refrigerant Type: r134a
Country of Origin: United States
The clutch will not engage unless I bump the front of it or until the engine reaches about 3000 RPM. The air gap measures .030". My factory GM manual identifies the compressor as an HT6, but does not give any maintenance procedures for the clutch itself. There is a tag on the side of the compressor identifying it as a Four Seasons Remanufactured. I need to know what tool I need to use to close the air gap.
Mastercool Tool Chart
.030 is normally fine-- spec is .010-.040"
The fact that it is a 4-seizens reman is scary....probably why it doesn't pull in good- they destroyed the magnetic pull by grinding down the pulley armature face to below .072" thickness-- I have seen 5 pulleys come apart due to thin welds at the webs due to 4 seizens grinding the faces too thin....these pulley separation failures are what are commonly referred to as "walk-homes"
The number one A/C diagnostic tool there is- is to know how much refrigerant is in the system- this can only be done by recovering and weighing the refrigerant!!
Just a thought.... 65% of A/C failures in my 3200 car diagnostic database (GM vehicles) are due to loss of refrigerant due to a leak......
I had looked at the Mastercool tool chart already, but I don't see anything listed for an HT6. I am aware that the Four Seasons remans don't have a very good reputation, but this compressor was on the truck when I bought it 8 years ago and the system works fine otherwise.
a little help please?
From what I am reading, the hub is pressed onto the shaft. So you need to loosen the nut, close the gap between the hub and clutch pulley and reinstall the nut, torquing it to 12.5 ft lbs. The tool you will want to use is 91000-A.
Thank you Adam
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