John Deere 5104 Problems

I have the same John Deere 5104 tractor. Tell me why the differential lock is bad abruptly? How to solve the problem? The broken diaphragm or the wear

The steering does not work on my John Deere 5104 tractor. What is a breakdown? The hydraulic system has air. You have to get the air out.

I have a John Deere 5104 tractor in August. There is currently a problem. The motor does not start. Could someone help me find the cause of the damage?

Yesterday I discovered some problems with my John Deere 5104 tractor. The diesel engine does not turn. Explain to me what the fault is? You must use the