Hi folks , for who needs a very detailed manual of the old Detroit Diesel 6.2 , I found this one that for me is the best .
https://matveynator.ru/f/9efda83135c6d53e16e47aab9a0122c4.pdf
https://matveynator.ru/f/9efda83135c6d53e16e47aab9a0122c4.pdf