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clutch installer tool

archie on Tue December 22, 2015 1:05 PM User is offline

Year: 1990
Make: chevy
Model: ASTRO
Engine Size: 4.3l
Refrigerant Type: r134a
Country of Origin: United States

hi everyone, I have a gm compressor (1136470) and I need to know the mastercool installer tool for this compressor. thanks.

GM Tech on Tue December 22, 2015 1:48 PM User is offline

It is part of the kit that Autozone loans out

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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......

Edited: Tue December 22, 2015 at 1:49 PM by GM Tech

archie on Tue December 22, 2015 5:44 PM User is offline

thanks, I know. I would like to buy my own. I think the compressor is a H6, but not sure. I keep buying these things and they don't work. so, help is needed. thanks.

mk378 on Wed December 23, 2015 10:51 AM User is offline

There were two versions of the tool, because early model compressors had SAE threads on the shaft and later ones metric. Though I think a 1990 model is well into GM's metric era.

GM Tech on Wed December 23, 2015 12:30 PM User is offline

The H-6 model as is yours are all metric.........R-4 stayed English until it's demise. 1990 was first year for H-6 on M-vans- Was R-4 in '89 as I recall...

-------------------------
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......

archie on Wed December 23, 2015 12:50 PM User is offline

o.k. so I need an installer tool that has metric threads to match those on the shaft of the h6. thanks so much. btw do you all know what size nut goes on the shaft?

GM Tech on Wed December 23, 2015 3:58 PM User is offline

Nut is unnecessary- has no function other than to keep threads clean- clutch is press fit- nut bottoms on shaft shoulder- later models H-6 removed the nut entirely for cost abatement.

I was an engineer in the plant that made those compressors until production went to Mexico.

-------------------------
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......

archie on Wed December 23, 2015 5:41 PM User is offline

between sae and metric, and nuts they don't need. WTF. thank you for your reply.

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