Oxygen Systems (was O2 Flows w/Switch Off)

[James Bennon]

Overhauled front engine, had combustion heater checked and was returned from C & D Associate's as not repairable--we re-installed --now we can get nowhere near Max differential at altitude, rechecked seals on heat ex changer, what are we missing????---work perfectly before we overhauled front engine---1973 Pressurized T337G??
A. any suggestions as to where to look---service manual not much help
B. Where is a good Skymaster shop -- we are located ion West Virginia??

Jim Bennon

[Ernie Martin]

Jim, some may miss this post because of the thread title (Oxygen). Consider putting it in a different or new thread under Pressurization. Also, in one post the combustion heater came back as repairable but in the next post as non-repairable; which is it?

Ernie Martin