Loud Yes, Unreliable??? SLAP!
What happened Bobby was this machine was made by Bendix in 1956. In 1957 Bendix was bought out by Philco. Around 1958 Ford bought Dexter. Merged Dexter & Philco under its appliances. Dexter took all the parts and molding to their molding shop in Iowa and started making the commercial machines, which as you pointed out were made right up to the 1990's. So most of the Bendix Combo parts are still available new from Dexter. Pumps, solenoids, tub seals, motors and tranny sets, cointraps.
A stroke of luck for us Combo nuts I can tell you.
So I am guessing this would be a pretty rare bird of a machine since it was only made for a year. Anybody ever see one??
I have seen "Dexter" machines go for years in a laundromat. What is your experience that has led you to see them as unreliable??