Are you sure you have the correct "hand" starter drive and starter rotation?
I know it's a lot of trouble, but if you take the motor and solenoid off the back of the starter, you can more easily check the fit and engagement and perhaps see what is hitting what better. Could even take the drive by itself and roll it in the ring gear teeth to check the fit.
with a d 311 motor and a starter hole in the bell housing from caterpillar you can not use a after market starter.the after market gear is to big and will not slide in to the ring gear. you need to find an old 40MT starter and then everything will fit together.
[quote="ccjersey"]Are you sure you have the correct "hand" starter drive and starter rotation?
I know it's a lot of trouble, but if you take the motor and solenoid off the back of the starter, you can more easily check the fit and engagement and perhaps see what is hitting what better. Could even take the drive by itself and roll it in the ring gear teeth to check the fit.[/quote]
Thanks for that tip, i'll give it a try tomorrow. Yes, I'm pretty sure it the right match as they are both beveled upwards.