If you own or work on the David Brown / Case tractor with models numbers: 770 870 970 1070 1090 1170 1175 Then you have found the service manual for you, Covers all you need to know in the service and repair of your tractor. Sections include: Axle Brakes Clutch Cooling Fuel Turbo Differentail Elec sys Engine Final drives Front sys Hydraulic sys Power shift clutch Power take off PTO Streering Transmittion As well as all the tech info. ;-)