________________________________________________________________________________

John Deere 3120 - Problem solving

The other day I recognized the damage on my John Deere 3120. Engine doesn't rotate. Tell me please what kind of malfunction?

Wrong type or grade of fuel used. Fuel pump drive problems. Check and overhaul. Wrong fuel pump timing. Need to set up.

Here is my question - why steering wheel spinning not resisting? What do I need to do for troubleshooting?

Minimum Oil Rating - Top up the oil. Steering cylinder has damage - Change the seal. The steering pump is defective - Check the steering pump.

I got a JD 3120 in march. Currently there is malfunction. Diesel won't start. Can somebody help me find a source of failure?

Starter speed is slow - Inspect the starter and install a new as required. Dirt in the fuel system - You should make washing and cleaning. There is dirt in the fuel filter - Renstall filter element. Piston rings are not free or they are worn or broken - Change piston rings.

I bought the same model. Recently, steering wheel works bad. Somebody tell me what is a breakdown?

Low hydraulic oil level in tank. Fill the tank. Breakage of hydraulic hoses. It is necessary to eliminate the problem. Steering pump is defective. Repair the pump. Power steering is damaged. Requires repair.

JD 3120 model question. Engine is difficult to start. Help me identify occasion of failure. What needs to be repaired?

Restriction in air filter/cleaner or induction system. Cold start system used incorrectly. Broken or Worn Piston Rings. Cracked injector Body or Cup. Water mixed in the fuel. Fuel too heavy at low temperature.

3120 diesel engine breakdowns. Motor is difficult to start permanently. How could i fix the breakdown?

Restriction in fuel tank vent. Air in fuel tank. Bleed fuel tank. Exhaust pipe is clogged. Slow starter speed. Dirty or faulty injectors. Clogged fuel filter. Clean or replace fuel filter. Fuel shut-off valve closed. Open fuel shut-off valve.

There was a malfunction of steering on my tractor. What is problem?

The air was formed in hydraulic system. You must remove air. Small level of hydraulic oil in system. Top up the oil. Steering hydraulic cylinder is damaged Replace the faulty part.

I have the exact same tractor. Why engine doesn't start? How do i fix it?

Valve timing is wrong - Need setting of valve timing. High or Low compression. Cylinder bores wear - Repair it. Leakage between seats and valves - Need Removal of leakage.

John Deere 3120 issue. Diesel engine knocks. what kind of failure?

Lack of oil. Fill up. This is the low temperature of the coolant.

I can not understand why front axle produces a rumble incessantly when tractor run?

This is the failure of any gear. You need to install new gears. Roller bearings crumbled. Fit new bearings.

I own this model three years. Recently, diesel starting is very hard. How to eliminate?

Injection nozzle is dirty. It is required to inspect injector. The fuel pump is not working. Install a new injection pump.

I have the exact same tractor. Can anybody tell me why locking differential breaks down immediately? How to solve the problem?

Diaphragm damaged or replace friction clutch discs. Requires repair.

We have 3120 tractor. Engine will not start. Help me can I solve the problem myself?

Possibly fuel filter element has dirt. Otherwise high-pressure fuel pump not adjusted.

I have trouble. Engine overheating occurs. How can I fix it?

Little coolant in the cooling system. You need to fill the system. Radiator is dirty - Clean it. Motor overloaded - Reduce motor load. Loose or defective fan belt - Replace fan belt as required. Check belt tensioner.

My father has JD 3120. Two days ago he heard knocking in the rear axle. Which part is damaged?

These sounds talk about destruction of bearings.

Tell me what happened if engine exhaust white gas?

If white gas comes from the exhaust pipe you required to change piston rings immediately.