Manifold Washer/Pilot Diagram for NEW A6/R4/V5 Compressors

[1987 GMC Jimmy]

This is very important info for when you’re installing a new GM style compressor to the factory lines because the ports on new compressors are stepped, rather than flush like on OEM units, and you need the sealing washers to compensate and the pilot inserts if yours didn’t come with any. If you don’t follow this (e.g. stacking washers), you will develop a leak at the manifold. Autozone also sells washers and pilots in kits (ex. Santech MT2236), and while their PNs don’t correspond to the Four Seasons ones, the color codings do.

https://www.compressorworks.com/Upload/Four Seasons/documents/Tech Tips/English/4S 319-4S GM SEALING WASHERS - FOUR SEASONS.PDF

 

[Snoots]

Thanks for sharing! Great info and good to know.

 

[bucket]

The new compressors used to come with the washers and sleeves. Not anymore, huh?

 

[1987 GMC Jimmy]

The R4 I bought came with the washers and luckily by hoses already had the pilots. My V5 didn’t come with anything. No instructions, nothing. And the hose block didn’t come with pilots there.