John Deere 4640 Engine Problems
The John Deere 4640 is a 40 series row crop tractor, first produced in about 1977, and in production for roughly 7/8 years. It has a 7.6 litre, 6 cylinder diesel engine, with a power output of about 174/185 hp, and a PTO of approx 155 hp. It has a fuel capacity of 83 gallons.
It has hydrostatic transmission, power steering and a wet disc braking sysytem.