I'm saving a nice, early 1970's Zenith 23" Color Console from the dump! It is model T2851W2, using a 20CC50 Chassis, mostly tube / hybrid set. I do not have the Sam's (Set #1238-3), it's in Volume 124, I only have up to Volume 120. There are no longer any Libraries in my area with Sam's, so it would be helpful to have even a scan of Zenith's Schemo., or Sams for this set. Any help will be very much appreciated. Thank you.,

That's another of those odd-ball Zenith models, like the 20BC50. It didn't have 20 tubes, so it didn't follow the original Zenith chassis numbering system.
They must've made enough of them, for Sams to print a folder for them.

Yes, I recall working on at least a few of those type Zenith sets in the late 1970's, of course then, it was time to replace the Horiz. and HV tubes! They were just getting old enough to begin to need sweep tubes at that time, so imagine my surprise when this set I have now, even with fairly heavy use, still has most of the original sweep tubes, which are now weak and slow, but still functioning! I will not operate this set much, until I replace those horiz. and HV tubes.

Shoot me a PM with your email. I will check tomorrow and see if I have one in my extra sams sets. If not I will scan one for you into a PDF file and email it to you. It may be next week before I can get one scanned.