cownd,
What does the manufactuer's operators manual /operator training programs say??? This is the key document. They most often give the specific do's & don'ts as outlined by the manufactuer & those define by various requaltions like SAE (formerly ASME/ANSI) & OSHA. A parts manual basically gives an illustration, a lable to reference a part number, a written description (sometimes specs.) & but not much info about the function or purpose. Used to be a technical writer for parts, operators & service manuals and later operator training programs all for industrial forklifts.
Calling a pin a tow pin could mean a point to which a "dead in the water" forklift can be "towed" to a repair area or on to a tilt bed deliver truck equipped with a winch vs putting a chain aroudn the OHG legs or a forklift carriage bar.