Need picture of 73 AC compressor manifold

[Dennis H.]

Does anyone have a 73 with the original as delivered AC system installed? I need a picture of the AC manifold that connects to the back of the A6 compressor. Trying to determine if mine has been worked on/modified in the past.

Thanks
Dennis

[Terry M.]

Re: Need picture of 73 AC compressor manifold

Does anyone have a 73 with the original as delivered AC system installed? I need a picture of the AC manifold that connects to the back of the A6 compressor. Trying to determine if mine has been worked on/modified in the past.

Thanks
Dennis

Dennis
I can't help you with a picture (I don't have a 1973 handy) and I'll go out on a limb and ask a really stupid question:
Doesn't the 1973-74 TIM&JG have such a picture?
I don't have a 1973-74 TIM&JG either.

[John S.]

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[Wes S.]

Re: Need picture of 73 AC compressor manifold

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[Dennis H.]

Re: Need picture of 73 AC compressor manifold

John and Wes, thanks for those pictures. Just as I suspected my manifold has seen some work in the past for whatever reason.

I'm dealing with a system that has been converted over to R134a that doesn't work. My goal is to put this AC system back to OEM original with a R12 charge. Looks like parts are in my future.

[Wes S.]

Re: Need picture of 73 AC compressor manifold

Dennis:
The high pressure hose is very close to the exhaust manifold with extreme heat it ages very quickly. My original hose failed crossing a bridge in Kansas City the amount of smoke caught me off guard, not sure what was happening with no place to stop.

[Dennis H.]

Re: Need picture of 73 AC compressor manifold

Wes

Yes, that appeared to be a problem with the 73 and GM issued a Service Technical Bulletin (74-T-41) on August 9 1974 changing the refrigerant hose assembly out with a 1974 hose assembly and adding an in-line high pressure fitting.

From a NCRS judging perspective would a GM Service Technical Bulletin changing the as delivered configuration take away points?

[Wes S.]

Re: Need picture of 73 AC compressor manifold

Dennis:
There are 8 points for AC Hoses on the judging sheet under originality. This definitely creates a configuration issue and should receive a point deduction of 1 to 2. This would depend on the event and judge. At a national they may be a bit more harsh.

[Dennis H.]

Re: Need picture of 73 AC compressor manifold

I'm going to attempt to find a NOS or good used hose assembly, given this is a one year only configuration I might come up empty handed on that front. A non-correct hose is available so that is always an option.

All this drama is about getting my 73 AC system up and running while maintaining the correct configuration. Some give and take for sure.