OK, so on a '11 6.7 the starter and flywheel went bad and I had to replace the flywheel and starter on the engine. The easy way was to pull the cab, pull the transmission, and replace both flywheel and starter. Both parts were purchased from Ford. I got the job done last week and the truck has had very little use. Today one of the employees claimed the starter is grinding again. I went out and tried it about 10 times and it engaged and started the truck everytime. So, if it is grinding again does anyone know why this issue repeats. There's no way starter is loose, Flywheel is torqued correctly and we used blue Locktite on the threads.

I am at a loss as to what to look for.

 

Did you have any luck finding the culprit? Im in the same boat with my '14. Thanks

 

only thing that comes to mind would be a battery check and see if they are low or a bad starter.

 

Are we past the days of checking starter alignment and shimming?

 

did you have any luck . as a ase gm mastertech . this on my 3 starter and flywheel in 50 k on my stock truck that is spotless and on severe duty service schedule . there are at least 2 part number updates what i have seen is a small design change in the flex plate ring gear to shorter offset and beveled ring gear teeth . from my research , . to me it looks like a 2 part problem starter pinion to ring depth its not deep enough into the tooth and second part due to ring ger being originally cut straight with no bevel and it cause and lack of full depth engagement on first fit on the starter causing major stress to ring gear in one spot until it spins a bit one other change was rather then spot weld on ring gear they now do a full weld all the way around ring gear and looks to be laser welded as not to stress the temper of the ring gear . iam still looking into this tired of 3k and up flywheel jobs with old stock parts i love the truck but dam 230 k on my 7.3 all oe still