I've looked at my Assembly Manual & Maintenance Manual it's really vague does anyone have a more user friendly schematic that makes sense? also the "T" inline mine is in the front I've seen that "T" in the rear of the engine. All I'm looking for Guys is something that makes sense so I can duplicate it as it was coming off the factory floorThanks for the helpAlsmith787

 

Maybe this will help. The line from manifold vacuum gets the "T" and splits off to the transmission modulator.

 

Tossed this together some years back....

 

Thanks it does help greatly two questions - so there are 2 "T's" one in the front of engine one at the back of the engine firewall end --------- last then on the air cleaner the valve at the end of the snorkel valve that hose goes from there to one of the thermal valve on the bottom of the air clean the 2nd barb of the thermal valve goes from there to what????
thanksAlsmith787

 

Damn... my diagram was messed up in that area, just revised it, thanks for the questioning!

 

The Vacuum Bulb in your diagram, is that with A/C?
Thanks

 

Finishing up my 1969 H/O engine vacuum line routing (And You Guys have been AMAZING with factual information)
SO everyone I know the assembly & Maintenance Manual call out a COLOR CODE on the vacuum lines
Air Cleaner --- black/white tracerAlso trans module black/blue tracer - well also black/yellow tracer black/red tracerIs that correct? Did Oldsmobile really do that to the 442 before it shipped to Demmer? I know the flapper valve had a solid black hose that they cut a existing hose put a T in it going to the flapperCan some explain all of this to me - the color thing on the vacuum hose seems like the factory wouldn't do that - Am I wrong? Or is that correct?

 

Yes, that's your climate control vacuum can. No AC, no can, I think.

 

Here is how I have mine...

 

Could you send that PDF in a different format it can't be opened I'm interested in this OEM Color Coded vacuum hose seems odd the factory would do that given that every penny is equated into price just trying to get to the truthPlease let us see your vacuum hose layout very interested
THanksAlsmith787

 

pdf's are a pain...

 

Yup!

 

I merged your 2 threads, there is no need to start multiple threads for the same thing.

 

Quick question -- I have the valve think you guys called it a bubble valve? This is the vacuum operated heater valve on the rear of the engine by the firewall I have a plug/hose nipple with heater hose clamped I need to replace with valve

 

On mine I am able to get a 7/8 wrench on the base and have room to loosen / tighten if needed.