During mining operations, mining bulldozer parts are subject to harsh working conditions and are prone to sudden failures. If not addressed promptly, these failures can lead to operational interruptions or even accidents. Mastering common fault diagnosis methods and emergency treatment techniques can effectively reduce downtime and ensure operational continuity.
Engine Parts Failures
Common problems include air filter blockage, oil filter failure, and spark plug carbon deposits.
Failure Symptoms: A clogged air filter can cause insufficient engine air intake, resulting in reduced power, increased fuel consumption, and unstable idling. A failed oil filter can increase oil impurities, intensify engine noise, and even risk cylinder seizure. Spark plug carbon deposits can cause delayed ignition, difficulty starting the engine, and weak acceleration.
Emergency Treatment: If the air filter is clogged, temporarily remove the filter element (for emergencies only; replace it immediately after operation) and clean any dust on the surface. If the oil filter fails, suspend operation, replace the spare filter, and refill with fresh oil. Spark plug carbon buildup can be treated by sanding the electrode (for mild carbon buildup). If carbon buildup is severe, replace the spare spark plug directly.
Chassis Parts Failure
Common Problems: Broken track shoes, stuck rollers, and misaligned idlers.
Symptoms: Broken track shoes can cause the bulldozer to ride jerkily and easily derail. Sticking rollers can increase track resistance, cause unusual chassis noise, and, in severe cases, wear the inner track. Misaligned idlers can cause the track to deviate and have uneven track tension on both sides.
Emergency Treatment: If a track shoe breaks during a non-critical operation, temporarily reinforce it with steel plates and bolts (ensure even force is applied to the reinforcement to prevent secondary damage). Replace the track shoe between operations. A small amount of lubricant can be injected into a stuck track roller (if the problem is debris, clean the debris before lubricating). This will temporarily alleviate the sticking. If the idler wheel is misaligned, adjust the idler tie rod bolts to fine-tune the wheel position and ensure the track is centered. (A professional inspection is required after the operation to identify the cause of the misalignment.)
Hydraulic System Component Failure
Common Problems: Hydraulic oil line leakage, stuck hydraulic valves, and hydraulic oil contamination.
Symptoms: Hydraulic oil line leakage can cause hydraulic oil loss, resulting in slow or inoperative movement of working devices (such as blades and ripper). A stuck hydraulic valve can cause uncontrolled movement of the working device, such as the blade failing to raise or lower or the ripper failing to retract. Hydraulic oil contamination can increase wear on the hydraulic pump, unstable system pressure, and frequent abnormal noises.
Emergency Procedures: If a hydraulic oil line leaks, immediately shut down the machine, close the hydraulic system main valve, and replace the leaking line with a spare line (before replacing, clean the interface and ensure a tight seal). Refill with the same type of hydraulic oil. If a hydraulic valve is stuck, try repeatedly operating the valve stem (for mild sticking). If this does not work, inject a small amount of hydraulic oil cleaner (temporarily relieves the problem). After the operation, disassemble the valve body and clean out any impurities. If hydraulic oil contamination is an emergency, temporarily replace some of the hydraulic oil (at least 50% of the total) and replace the hydraulic oil filter. Completely replace all the hydraulic oil after the operation is complete.
Electrical System Component Failure
Common Problems: Battery discharge, sensor failure, and short-circuited cables.
Symptoms: A battery discharge can cause the bulldozer to fail to start and the instrument panel indicators to remain off. Sensor failure (such as the water temperature sensor or oil pressure sensor) can cause the instrument panel display to display abnormally, making it impossible to accurately monitor equipment parameters and posing an overload risk. Short-circuited cables can cause localized heating and even burn electrical components, resulting in smoke and odor.
Emergency Procedures: If the battery is discharged, jump-start it (connecting it to a battery from another device, ensuring the positive and negative poles are correctly connected). After the operation, check that the generator is functioning properly to prevent further discharge. If a sensor failure does not affect core operations, temporarily disable the faulty sensor signal (this requires professional assistance to avoid accidentally blocking critical safety sensors). Rely on manual observation of the equipment status (such as feeling the water temperature by touching the engine body or checking the oil dipstick to determine the oil pressure). If a wire or cable short circuits, immediately disconnect the power supply, locate the short (usually a damaged insulation layer), and repair it with insulating tape. If the short circuit is severe, disconnect the faulty line and temporarily activate a backup line (a new cable will need to be replaced after the operation).
If you need to purchase mining bulldozer accessories or learn more about maintenance, please contact us directly. We will provide you with excellent service and a positive purchasing experience!
For other parts, please provide us with the part number or visit our related websites:
Click here to visit our spare parts web
Click here to visit our alibaba （There are more kinds of products）
Post time: Sep-19-2025