Finally retired !

[Mike Walton]

Hi Fred,
most of my experience in hydraulics has been in replacing broken/ruptured/worn hydraulic lines.
unless you order a factory part number, there is little chance of obtaining its dimensions or specifications from the OEM.
its their secret, they choose who to divulge the information to- definitely not John Q. Public

in the suppliers defense, they are in business to sell things-
if you don't want to buy anything why would you expect something for free from them?
if the agent helps you for a half hour, is he not entitled to compensation for his work, by gettin a sale?
worse yet, you could take the information he helps you with, and then you go buy the stuff from someone else after he spent the time to educate you.
those are some of the reasons businesses are not forthcoming.

i'll be a bit more informative,here is a 50 cent tour...
i can say most of the fittings you may encounter are 37* JIC fittings
the # corresponds to a fractional measurement in 16ths of an inch
most likely, but not limited to, #5, #6, #8, #10, #12,#14 ,#16 are used commonly
the hose diameters will correspond to the fitting size or pressure specification
suction hoses may have automotive style hose clamps on their fittings
high pressure hoses should never have automotive style hose clamps
most hoses will have pressure rating on the hose assembly
reuseable fittings are available as well as hose stock to make your own hose assemblies without special tools

i can't help you with the hose lenghts but you could record the hose dimensions and fitting type as you replace them
you could start a blog and share your findings with others that have your same problem
you never know, there may be someone along the way to point you in an unintended direction of discovery
i wish i could give more information, but i'm not knowing which hoses you are trying to replace
but armed with the recent information, you can now move forward
i wish the best of luck
if i can further assist let me know
all the best
mike