A paver is a special equipment used to evenly spread asphalt mixture or stabilized soil materials in road construction. During the construction process, failures often occur due to the hydraulic system, electrical system, mechanical components or improper operation, affecting construction efficiency and quality。
Una pavimentadora es un equipo especial que se utiliza para distribuir uniformemente la mezcla asfáltica o materiales de suelo estabilizado en la construcción de carreteras. Durante el proceso de construcción, a menudo ocurren fallas debido al sistema hidráulico, sistema eléctrico, componentes mecánicos o funcionamiento inadecuado, afectando la eficiencia y calidad de la construcción.
The following is a summary of common faults of crawler pavers and their repair methods:
1. Hydraulic system failure/Fallo del sistema hidráulico
(1) Hydraulic oil temperature is too high/La temperatura del aceite hidráulico es demasiado alta
Causes: lack of oil in the oil tank, clogged filter element, dust accumulation in the radiator, poor quality of hydraulic oil or wear of the pump/motor.
repair:
Check the oil level and add qualified hydraulic oil.
Clean or replace the filter element and remove dust from the radiator.
Check the relief valve and hydraulic pump and replace damaged parts if necessary.
(2) The hydraulic cylinder does not work (such as the leveling cylinder and the screed lifting cylinder)
El cilindro hidráulico no funciona (como el cilindro nivelador y el cilindro de elevación de la regla)
Cause: Solenoid valve failure, priority valve blockage, oil pipe leakage or hydraulic cylinder seal damage.
repair:
Clean or replace the solenoid valve and check whether the priority valve is blocked by foreign matter.
Check the oil pipe connection and replace the hydraulic cylinder seal.
(3) Screed vibration/Vibración de la regla
Cause: Leveling cylinder solenoid valve failure or hydraulic lock failure.
Repair: Swap the left and right solenoid valves for testing and replace the damaged hydraulic lock assembly.
2. Electrical system failure/Fallo del sistema eléctrico
(1) The paver cannot start/ La pavimentadora no puede arrancar
Cause: Emergency switch not reset, main switch not returned to center or battery power is low.
Repair: Reset the emergency switch and check the battery voltage and circuit.
(2) Automatic leveling device malfunctions/Mal funcionamiento del dispositivo de nivelación automática
Cause: Sensor failure, loose line or incorrect control parameter setting.
Repair: Recalibrate sensor, check electrical connections, replace sensor if necessary.
3. Mechanical system failure/Fallo del sistema mecánico
(1) Auger does not work/La barrena no funciona
Cause: Bearing damage, chain too long or reducer failure.
repair:
Replace worn bearings and adjust or replace chain.
Check the wear of the planetary reducer gears.
(2) The vibrator is not vibrating or the vibration force is insufficient/El vibrador no vibra o la fuerza de vibración es insuficiente
Cause: Bearing burned or stuck, motor gear broken or insufficient lubrication.
Repair: Replace bearings and seals, check motor gear shaft.
(3) The hopper cannot be closed/La tolva no se puede cerrar
Cause: Insufficient hydraulic cylinder thrust, overflow valve failure or low hydraulic pump oil supply pressure.
repair:
Check the clearance between the piston seal and cylinder and replace any damaged parts.
Clean or replace the relief valve and check the oil supply of the hydraulic pump.
4. Engine failure/Fallo del motor
(1) Engine speed loss or lack of power/Pérdida de velocidad del motor o falta de potencia
Cause: Fuel filter is clogged, air intake system is blocked or turbocharger is faulty.
Repair: Replace the filter, clean the intake pipe, and check the supercharger.
(2) Black smoke/Humo negro
Cause: Clogged air filter, faulty fuel injector or improper valve clearance.
Maintenance: Clean or replace the air filter and adjust the valve clearance.
5. Walking system failure/Fallo del sistema de marcha
Deviation problem:
Causes: Uneven track tension, drive wheel wear, and hydraulic motor asynchronism.
Maintenance: Adjust track tension, check drive gear wear, and calibrate hydraulic system flow.
Track shoe damage:
Cause: Rubber tearing (prone to occur during high temperature construction) or metal structure deformation.
Repair: Refurbishment using special processes (such as degumming, chemical treatment, re-vulcanization) costs only 1/10 of new products.
6. Daily maintenance suggestions
Hydraulic system: regularly replace the hydraulic oil (1000 hours is recommended), clean the radiator and filter element.
Sistema hidráulico: reemplace periódicamente el aceite hidráulico (se recomienda 1000 horas), limpie el radiador y el elemento del filtro.
Lubrication system: Add grease regularly, especially to the spiral distributor and chain. It is recommended to use a mixture of waste oil and diesel to lubricate the scraper chain.
Sistema de lubricación: Añada grasa periódicamente, especialmente al sinfín y a la cadena. Se recomienda utilizar una mezcla de aceite usado y diésel para lubricar la cadena rascadora.
Electrical system: Check sensors and circuits to prevent poor contact. Regularly calibrate automatic leveling instruments and ultrasonic material level sensors to avoid uneven paving thickness.
Sistema eléctrico: Verifique sensores y circuitos para evitar mal contacto. Calibre periódicamente el nivelador automático y el sensor de nivel ultrasónico para evitar espesores desiguales en el pavimento.
Long-term parking: clean the machine body, apply anti-rust oil, and retract the hydraulic cylinder.
Estacionamiento de largo plazo: limpie el cuerpo de la máquina, aplique aceite antioxidante y retraiga el cilindro hidráulico.
7. Summary:
Through regular maintenance, timely troubleshooting and proper operation, the crawler paver can significantly extend its service life and ensure construction quality.
Mediante un mantenimiento regular, una resolución de problemas oportuna y un funcionamiento adecuado, la pavimentadora sobre orugas puede prolongar significativamente su vida útil y garantizar la calidad de la construcción.
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Post time: May-06-2025