TZ24da starts but will not move

[TZnightmare]

Hello to all,I am looking for a detailed rear end schematic of mt TZ24da more detailed that my owner shop manual.The tractor starts and all attachments work but I have no forward or reverse.I am not sure if it's the drive pump or something in the actual rear end let go.If someone has a detailed exploded view of the rear end please let me know.New holland estimates approximate $3,800 possible bill.I need this machine going.thanks ,Don