The TTY for the Deaf folks put together a nice manual
A good set of scans is near the bottom on this SMECC page
https://www.smecc.org/teletypewriters_made_easy.htm
Sine Ed passed away it is hard to say how long the SMECC pages will stay up, so you may want to grab a copy.

TELETYPEWRITERS MADE EASY! - PDF FILES

This  Manual now in the SMECC Archives
 was provided to SMECC By TDI  - MANY THANKS!
This manual originally belonged to  of Marcellus Kleberg

 

Compiled by a staff of teletypewriter devotees who, 
themselves, are very much a part of the deaf network.

Paul L. Taylor, Editor
Frederick N. Stewart, Assistant Editor
   
Section I
Intro & General		 CONTENTS  - Dedication i - Preface ii - Foreword iii - Introduction v


I GENERAL
Comments on Preparing a Teletypewriter 
Machine for Use with an Acoustical Coupler G-l
Procedure for General Checkout of a
Teletypewriter Station G-2
Adjusting the Range Finder G-3
Comments on Maintenance and Trouble Shooting G-4
The Baudot Code G-6
Publication and Supply References G-7
   
Section II
Model 15		 Robert H. Weitbrecht, Model 15
   
Section III
Model 28		 Dan Skinner, Model 28
J. Thomas Rule, Model 28
   
Section IV
Model 32 pt.1		 Eugene L. McDowell, Model 32
Thomas R. Schwarz, Model 32
   
Section IV
Model 32 pt.2		 Eugene L. McDowell, Model 32
Thomas R. Schwarz, Model 32

Nick England K4NYW
www.navy-radio.com