Do you have one or two engines and are they counter rotating?
I am not sure but if the alternator spins the wrong way will it still work?
I was working on a friends hydraulic motor. It was used and came off a boat with twin gassers. The pump was mounted to the left turn motor.
When we hooked it up it would not work. Reversed the motor and it worked like a charm.
I dunno just thinking.
Sd
PS Larry using a turnbuckle for a tensioner. What a great idea.
Hero status dude.