Chapter 4 Running System Section 1 Introduction (3)Great ground clearance,and that of some tractors is adjustable.Adjustable wheel base. (4)Generally not installed flexible suspension and shock absorbers on the rear axle;Rear axle and the body are rigid connection,but front axle and the body are hinged connection. (5)Wheels of paddy field tractors with high pattern tyres, inserted paddy wheels,paddy impeller,interval tread shoe,etc.. 机械电子工程学度 Automobile and Tractor Northwest A&F University Automobile and Tractor Northwest A&F University Chapter 4 Running System (3) Great ground clearance, and that of some tractors is adjustable. Adjustable wheel base. (4) Generally not installed flexible suspension and shock absorbers on the rear axle; Rear axle and the body are rigid connection, but front axle and the body are hinged connection. (5) Wheels of paddy field tractors with high pattern tyres, inserted paddy wheels , paddy impeller, interval tread shoe, etc.. Section 1 Introduction