John Deere 4020

The John Deere 4020 is a row-crop tractor produced from 1963 to 1972 as part of the New Generation Series. It was manufactured in Waterloo, Iowa, USA and Mexico, with a total production of 184,879 units including gasoline, LP, and diesel variants. The tractor features multiple engine options including diesel, gasoline, and LP gas 6-cylinder engines. It offers 8-speed partially synchronized or full power shift transmissions. The 4020 delivers tested drawbar power of 83.79 hp and PTO power of 95.83 hp. It has a 4x2 or optional 4x4 front-wheel assist drive, mechanical rear differential lock, hydraulic wet disc brakes, and an open operator station with optional cab. Fuel capacities vary by fuel type, and the hydraulic system is closed center with specific flow and pressure ratings. The tractor hitch is category II with a rear lift capacity of 3790 lbs. PTO options include independent front and rear PTOs with 540/1000 rpm speeds. Dimensions include a row crop wheelbase of 97.5 inches, length of 151 inches, and weight ranging from 8225 to 9560 pounds depending on configuration. Electrical system changed from positive to negative ground during production with a Motorola alternator and 12V battery system. Attachments include loaders such as the 148, 158, and 48 models with detailed lift, breakout, and dimension specifications. The 4020 is part of a series including the 4010, 4000, 4230, and 4320 models.