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MF 7720 Troubleshooting methods

Recently I discovered the damage on my Massey Ferguson 7720. Diesel can not crank over. Explain me what kind of problem?

Fuel type is wrong. Fuel pump not working. Check and overhaul. Timing of fuel injection pump is incorrect. Adjust as required.

MF 7720 failures. The engine fails to develop the full power. How should I get rid of problem?

Fuel shortage - Fill the tank and check fuel quality. Injector pump plunger and barrel worn. Replace with a new one.

Help anybody what is fault if diesel engine stops suddenly?

Defective fuel injectors. Fuel injection pump timing. Defective fuel pump. Defective injectors.

7720 model problem. Hard shifting transmission. What's the reason?

Shifter forks, rods, or other transmission gear selection components damaged.

Here is my question - why my steering wheel turns around very easy? What are my actions to get rid of problem?

Low hydraulic oil level in tank - It is required to add oil. Possible malfunction steering hydraulic cylinder - Make a replacement. Defect in the power steering pump - Repair pump.

I purchased a Massey Ferguson 7720 in february. Presently there is issue. Diesel not starting. Could anyone help me determine the cause of problem?

Starter rotates slowly - Diagnose starter and reinstall if necessary. Clogging in the fuel line - Clean and wash. Fuel filter is dirty - Replace it. Worn piston rings - Replace the piston rings.

I have the same tractor. Yesterday I saw steering wheel is hard to turn. Explain to me what's issue?

Low oil index. Incorrect toe-in. Improper alignment of front wheels - Replace tie-rod. Leak in hydraulic connections. Eliminate the problem. Steering pump is defective. Repair the pump. Power steering defective. Install the new power steering.

7720 tractor issue. Motor hard to start. Need help to identify prime cause of issue. What do I need to check?

Low compression. Oil pump worn or passages obstructed. Cold start system worked incorrectly. Damage or wear of piston rings. Cracked injector Body or Cup. Water mixed in the fuel. Fuel too heavy at low temperature.

MF 7720 engine problems. Motor is difficult to start permanently. How do i fix this defect?

Clogging in fuel tank vent. Air leakage to the fuel inlet. Clogging in exhaust pipe. Slow starter speed. Diesel injection nozzles faulty or sticking. Filter clogged. Fuel shut-off valve closed. Open fuel shut-off valve.

Steering does not work on my tractor. Why did this happen?

Hydraulic system has a large amount of air. We recommend you remove air. Minimum hydraulic oil level in the tank. It is required to add oil. Wear of the hydraulic steering cylinder Change the seal.

I own the exact same tractor. Why motor failure to start? How could i resolve an issue?

Valve timing is improper - Adjust valve timing. Bad compression. Wear cylinder bores - You must fix it. Leaks between seats and valves - Remove leaks.

MF 7720 breakdowns. I hear a diesel engine knocking. what could be the malfunction?

Oil of small quantity. Add oil. Cooling temperature is minimum.

I have a problem why driving front axle to rattle regularly at work?

Defective gear. You need to install new gears. Bearings crumbled. Replace it.

I own this model about four years. Often motor start is very hard. What a breakdown?

Injection nozzle is dirty. You must to inspect a nozzle. Injection pump is damaged. Requires replacement of injection pump.

I get the same tractor. Explain to me why locking differential is defective abruptly? How to solve the problem?

Diaphragm worn out or discs friction clutch worn out. You have to make repairs.

I have Massey Ferguson 7720. Diesel engine doesn’t want to work. Help me can I solve the problem myself?

Possibly Dirt in the fuel system. Otherwise injection pump to lost adjustments.

I have the problem. Motor constantly overheats. What kind of malfunction?

Coolant level lowered. Pour liquid into radiator to recommended level. Clogged radiator - Clean the core. Engine overloaded - Reduce engine load. Loose or problem fan belt. Adjust belt tension.

My friend has 7720 tractor. Day before yesterday he diagnosed a loud knocking in the rear axle housing. Which part is damaged?

These sounds denote bearing problems.

Tell me what is problem if motor exhaust white gas?

If white gas visible from exhaust pipe you need to carry out replacement of piston rings immediately. High engine oil level - Inspect oil level and correct.