Mercedes Workshop Manual G 300 DT Class

Ammados friends.
I have a Mercedes G Class, Model 300 DT, and I need the manual of the head of this vehicle and model.
It is full and we are not able to review certain cyes and circuits.
In the Mercedes Benz house, they tell me that this model no longer has it. The first registration is May 1997.
I would appreciate you to guide me as and how can I get with the manual. I don't need the user, since I have it in German.
In the confidence of vustra help, I send you an attentive and respectful greeting

I will gladly answer all your indication. I reiterate my greetings and thank you for your attention.