Causes and elimination of seven common faults of four-wheel tractors

big four-wheel tractor

Tractors are a very common farm tool in our lives. Among the more than 10 million tractors in China, four-wheel tractors account for 60% and become the main agricultural power machinery. In order to help agricultural machinery operators make good use of the small four wheels, today the editor of MANHOPE will lead everyone to learn how to troubleshoot tractors.

Common faults of four-wheel tractors include abnormal sound of brake drum, heat, idling of steering wheel, normal toe-in of front wheels, but accelerated wear of guide wheels, etc.

1. The brake drum has abnormal sound:

When the four-wheel tractor is braking, there is a loud crashing sound from the brake drum. It is recommended that the machine operator stop immediately, disassemble and inspect, and check whether the brake shoe return spring is very soft; whether the brake shoe is partially burned; whether some rivets are loose. signs of disengagement; whether the friction lining is broken.

The reasons for the failure: first, the poor riveting quality of the friction disc; After riveting a new brake shoe, replace the return spring, remove the debris in the brake, and operate it correctly after assembly (if you are not braking, do not put your foot on the brake pedal; try to avoid emergency braking; maintain the correct brake Clearance and regular inspection and adjustment),

2. The engine cannot be started:

Possible causes: Fuel supply problems, ignition system failure, electrical problems, etc.

Remedy: Check the fuel supply to ensure that there is enough fuel; check the spark plug and ignition coil of the ignition system; check the circuit connection to ensure that the power supply is normal.

3. Engine misfire or unstable operation:

Possible reasons: poor fuel supply, ignition system failure, clogged air filter, etc.

Remedy: Check the fuel supply system, such as fuel filters and injectors; check the components of the ignition system, such as ignition coils and spark plugs; clean or replace the air filter.

4. The transmission cannot shift or is difficult to shift:

Possible reasons: clutch failure, insufficient transmission oil, gear shifting mechanism problems, etc.

Remedy: Check the working condition of the clutch, repair or replace the clutch if necessary; check the level and quality of the transmission oil, add or replace the transmission oil if necessary; check the connection and operation of the shifting mechanism.

5. Electrical system failure or circuit problem:

Possible reasons: Poor contact of wires, insufficient battery power, failure of electrical components, etc.

Troubleshooting method: Check the connection of the wires to ensure good contact; check the battery power and electrolyte, and charge or replace the battery if necessary; check the working conditions of the electrical components, and repair or replace the corresponding parts if there is a fault.

6. Suspension system abnormality or abnormal sound:

Possible reasons: loose suspension parts, broken suspension springs, failure of shock absorbers, etc.

Remedy: Check the fastening of the suspension parts and fasten loose parts; check the status of the suspension springs, and replace the broken springs if necessary; check the working condition of the shock absorbers, and replace the shock absorbers if there is a fault.

7. Tire leak or damage:

Possible reasons: puncture inside the tire, tire aging, air valve leakage, etc.

Remedy: Check the surface and interior of the tire, repair or replace the damaged tire; check the air valve and valve, repair or replace the leaking air valve.

Please pay attention to MANHOPE's website (//, let's learn more about agricultural machinery together.