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Kubota L3901 Troubleshooting

The other day I noticed a breakdown on my Kubota L3901 backhoe. Diesel can not crank. Tell me what could be the malfunction?

You used an incorrect type of fuel. Fault in fuel injection pump. Diagnose and change. Timing of fuel injection pump is incorrect. Adjust if needed.

L3901 HST tractor troubles. Low engine power. How to fix an issue?

Fuel filter, fuel prefilter, water separator or fuel line clogged - Replace fuel filter unit. Clean fuel prefilter, water separator, fuel line.

Tell me please what happened if engine stops during operation?

Engine overheating. Defective injection nozzle. Loose electrical connections.

Kubota L3901D question. Transmission shift hard at low speeds. What's the reason?

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

I would like to know why steering wheel turns too easy? How do I act to correct the situation?

Low Oil Rating - Top up the oil. The steering cylinder is heavily worn - Repair it. Steering pump have worn - Replace pump.

I acquired a Kubota L3901 loader in july. Today there is damage. Diesel will not start. Can somebody help me diagnose the source of failure?

Starter faulty - Inspect the starter and install a new as required. Dirt in the fuel system - Clean and wash. There is dirt in the fuel filter - Replace fuel filter. Piston rings are broken - Install new piston rings.

I use the same model. Recently, the steering stopped working. Tell me what's issue?

Low oil index. Pour completely. hydraulic connection leaking. Eliminate a defect. Steering pump is worn out. Check the steering pump. Wear of power steering. Diagnose the power steering.

L3901D tractor question. Motor cranks but will not start. Help me define the reason of failure. What needs to be repaired?

High-speed and idle mixture needles not properly adjusted. Incorrect functions of the cold start system. Wear or deformation of piston rings. Injection pump drive shaft is defective. Water mixed in the fuel. Crankcase oil too heavy. Use oil of proper viscosity.

L3901 diesel motor damages. Diesel is difficult to start sometimes. How can i fix this defect?

Restricted Fuel Lines. Air leaks on suction lines. Exhaust pipe is clogged. Low voltage - Charge battery. Dirty or faulty injectors. Filter clogged. Fuel shut-off valve closed. Open fuel shut-off valve.

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

The hydraulic system has air. You must draw out air. The minimum oil indicator in the tank. Top up the oil. Steering cylinder has problems Replace the faulty part.

I use the exact same tractor. Why motor failure to start? How can i fix malfunction?

Valve timing is improper - Adjust valve timing. High or Low compression. Cylinder bores wear - You must fix it. Leaks between seats and valves - Eliminate leakage.

We have a problem with Kubota L3901 backhoe. The engine knocks. what is the problem?

Lack of oil. Fill up. Low engine speed. Oil level low.

I can not understand why front axle to make a lot of noise incessantly during operation?

Teeth of gears collapsed. You need to install new gears. Roller bearings are firmly erased. You need to change it.

I own this model about four years. Recently, motor start is intermittent. How to eliminate?

Nozzle has clog. You must to diagnose a nozzle. High-pressure fuel pump has a malfunction. Repair injection pump.

I have the exact same tractor. Tell me what's problem if locking differential breaks down immediately? How can I fix it? What should I do?

Diaphragm worn out or replace friction clutch discs. Change worn components.

I have Kubota L3901 loader. Engine not working. Help me can i fix the problem?

Possibly Dirt in the fuel system. Otherwise high-pressure fuel pump not adjusted.

I have trouble. Diesel overheating occurs. How to fix it?

Lack of coolant in cooling system - Fill cooling system to proper level. Connecting rod or crankshaft bearings worn. Coolant flow route corroded. Engine overloaded. Adjust the gearing. Excessive engine load. Excessive load - Reduce load or speed. Broken or misadjusted fan belt - Adjust or replace.

My friend has Kubota L3901 HST. Three days ago he diagnosed a loud knocking in the crankcase of the drive axle. Which part is damaged?

All sounds denote destruction of bearings.

Tell me what is fault if engine exhaust white gas?

If white gas appeared from exhaust pipe you need to carry out replacement of piston rings immediately. Injector pump or injectors delivering fuel unevenly. Check and service injectors and injector pump – specialist operation.