I'm not aware of an actual spec for the back lash other than a statement " it is the responsibility of the user to assure there is some" and the owner is responsible for damage due to lack thereof. I just go by feel to see that there is a small amount of back lash clearance throughout the generator/alternator rotation.
Thank you sir , just what I needed to proceed
Does your 3T use the 18 tooth gear? Just curious, heard they are getting scarce. JM
Made the install of the alternator drive case . Made a gasket instead of rtv. Got just a little backlash , and snugged her down .
The old girl spun right over with the 24 volt starter conversion ! Now on to other tweeks.
I forgot to count the teeth on the gear
"i reject your reality and substitute my own" - adam savage. i suspect my final words maybe "well shit, that didnt work"
instead of perfection some times we just have to accept practicality