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JD 6400 - Problems and repair

The other day I found out some problem on my John Deere 6400. Motor can not rotate. Tell me what kind of damage?

Fuel grade is wrong. The fuel pump drive is faulty. Diagnose and change. Timing of fuel injection pump is incorrect. Need to set up.

Please give me information why my steering wheel spinning without resistance? What are my actions to fix an issue?

Minimum Oil Rating - Pour full. Steering cylinder has a defect - Repair it. Steering pump have worn - Repair pump.

I acquired a JD 6400 in march. Currently there is damage. Diesel motor not starting. Can somebody help me determine the cause of problem?

Starter speed is slow - Diagnose starter and reinstall if necessary. Fuel pipes are contaminated - Flush and clean the fuel pipe. Filter element is dirty - Change the filter. Piston rings worn out - You need repair.

I have the same tractor. Recently I noticed steering wheel operate tight. Help me find out what are possible malfunctions?

Minimum Oil Rating. Pour completely. Breakage of hydraulic hoses. It is necessary to fix a defect. Power steering pump defect. Repair the pump. Wear of power steering. Install the new power steering.

6400 model trouble. Motor starts hard. Help me please specify occasion of damage. What should I check?

Clogging in air filter/cleaner. Cold start system worked incorrectly. Piston rings are worn or broken. Cracked injector Body or Cup. Water in fuel. Fuel too heavy at low temperature.

JD 6400 diesel motor troubles. Diesel hard starting permanently. How could i resolve an issue?

Restricted Fuel Lines. Air leakage to the fuel inlet. Exhaust pipe is clogged. Slow starter speed. Dirty or faulty injectors. Clogged fuel filter. Clean or replace fuel filter. Incorrect timing.

Steering not working on my tractor. What repairs should I do?

Hydraulic system has a large amount of air. You must release air from system. Small level of oil in the tank. Top up the oil. Steering hydraulic cylinder worn out Change the seal.

I have the same tractor. Why diesel failure to start? How do i fix this defect?

Valve timing is wrong - Make adjustment. Bad compression. Worn cylinder bores - Need overhaul. Leaks between seats and valves - Eliminate leak.

John Deere 6400 problems. I hear the engine knocking. what could be the malfunction?

Lack of oil. You should pour this. Cooling temperature is minimum.

I can not understand why tractor front axle is cracking incessantly when tractor run?

This is the failure of any gear. Replace gears. ball bearings are very worn out. Swap the replacement.

I own this tractor three years. Often diesel engine start is very hard. What a breakdown?

Injector is dirty. You should to diagnose injector. Injection pump problems. Repair fuel pump.

I bought the exact same model. Can anybody tell me why differential lock assembly breaks down immediately? How to solve the problem?

Diaphragm worn out or replace friction clutch discs. Requires repair.

We have 6400 model. Diesel engine will not start. I need to know how can I fix this?

Probably this is a clogged fuel filter. Otherwise high-pressure fuel pump to lost adjustments.

Please help me. Motor constantly overheats. What is the fault?

Lack of coolant in cooling system - Fill cooling system to proper level. Radiator core or side screens dirty - Clean radiator as required. Excessive load - Reduce load or speed. Loose or defective fan belt - Replace fan belt as required. Check belt tensioner.

My dad uses a John Deere 6400. Two days ago he diagnosed knocking in the crankcase of the drive axle. What's wrong?

All symptoms evidence of damaged bearings.

Tell me what problem if motor exhaust with white smoke?

When white gas comes from the exhaust pipe you required to replace piston rings urgently.