1. 4.4 Maintaining agricultural four-wheeled tractor
Preparing operator clothes
Checking nuts and bolts, V-Belt and of Fan-Belt
Checking coupling
Checking tire pressure, oil motor, transmission gear oil
Replacement of seal and bearing

2. Maintaining agricultural four-wheeled tractor (Continues…………)
Checking of condition and replacement of input shaft sprocket
Checking oil
Usage of extension Pulley Cover : taking care of durable of V-Belt and antiskid

3. Bibliography :
Hardjosentono,M., Wijato, Rachlan E., Badra I.W., Tarmana, R.D Mesin-mesin Pertanian. Penerbit Bumi Aksara. Jakarta