Common Malfunctions and Emergency Remedies for Mining Bulldozer Components

Common Malfunctions and Emergency Remedies for Mining Bulldozer Components​

In mining operations, mining bulldozers operate in extremely harsh environments, which makes their components highly susceptible to sudden malfunctions. Failure to address these issues in a timely manner can not only disrupt normal operations but also trigger safety accidents. Therefore, having a good grasp of common fault diagnosis methods and emergency handling skills is crucial for minimizing downtime and ensuring the continuous progress of mining work.

Malfunctions of Engine Components​

Typical issues in this category include clogged air filters, malfunctioning oil filters, and carbon accumulation on spark plugs.​

Malfunction Symptoms​

A clogged air filter restricts the engine's air intake, leading to reduced engine power, higher fuel consumption, and unstable idling speeds.​

A faulty oil filter allows more impurities to remain in the oil, which increases engine noise and may even result in serious problems like cylinder seizure.​

Carbon deposits on spark plugs cause delayed ignition, making it difficult to start the engine and resulting in weak acceleration performance.​

Emergency Remedies​

For a clogged air filter: In emergency situations only, temporarily remove the filter element, clean the surface dust, and reinstall it. Remember to replace the filter with a new one immediately after the current operation.​

For a malfunctioning oil filter: Stop the machine operation at once, replace the faulty filter with a spare one, and refill the engine with new, clean oil.​

For spark plug carbon deposits: If the carbon buildup is mild, use sandpaper to polish the electrode and remove the deposits. If the buildup is severe, directly replace the spark plug with a spare part.​

Malfunctions of Chassis Components​

Common problems here involve broken track shoes, seized rollers, and misaligned idlers.​

Malfunction Symptoms​

A broken track shoe causes the bulldozer to move with jolts and increases the risk of track derailment.​

Seized rollers raise the resistance of the track, produce abnormal noises in the chassis, and in severe cases, lead to wear on the inner side of the track.​

Misaligned idlers result in track deviation and uneven tension on both sides of the track.​

Emergency Remedies​

For a broken track shoe during non-critical operations: Use steel plates and bolts to temporarily reinforce the broken part, ensuring that the reinforcing force is evenly distributed to avoid secondary damage. Plan to replace the track shoe during the interval between operations.​

For a seized roller: If the issue is caused by debris, first clean the debris around the roller, then inject a small amount of lubricant into the roller. This can temporarily reduce the seizure and restore partial functionality.​

For a misaligned idler: Adjust the tie rod bolts of the idler to fine-tune its position, ensuring the track stays centered. After the operation, arrange for a professional inspection to identify the root cause of the misalignment.​

Malfunctions of Hydraulic System Components​

Key problems in the hydraulic system include hydraulic oil line leaks, stuck hydraulic valves, and contaminated hydraulic oil.​

Malfunction Symptoms​

Leaking hydraulic oil lines cause a loss of hydraulic oil, leading to slow movement or even complete failure of working components such as the blade and ripper.​

Stuck hydraulic valves result in uncontrollable movement of working devices—for example, the blade may fail to lift or lower, or the ripper may not retract properly.​

Contaminated hydraulic oil accelerates the wear of the hydraulic pump, causes unstable system pressure, and leads to frequent abnormal noises in the hydraulic system.​

Emergency Remedies​

For a leaking hydraulic oil line: Immediately shut down the machine, close the main valve of the hydraulic system, and replace the leaking line with a spare one. Before installation, clean the connection interface thoroughly to ensure a tight seal, then refill the system with hydraulic oil of the same type.​

For a stuck hydraulic valve: If the sticking is mild, repeatedly operate the valve stem to try to resolve the issue. If this method fails, inject a small amount of hydraulic oil cleaner to temporarily relieve the sticking. After the operation, disassemble the valve body and clean out any internal impurities.​

For contaminated hydraulic oil: In emergency situations, replace at least 50% of the total hydraulic oil and change the hydraulic oil filter. After the current operation is completed, fully replace all the hydraulic oil in the system.​

Malfunctions of Electrical System Components​

Common electrical system issues include battery discharge, sensor failure, and cable short circuits.​

Malfunction Symptoms​

A discharged battery prevents the bulldozer from starting, and the indicators on the instrument panel remain unlit.​

Sensor failure (e.g., water temperature sensor or oil pressure sensor) causes abnormal readings on the instrument panel, making it impossible to accurately monitor equipment parameters and increasing the risk of equipment overload.​

Cable short circuits lead to local overheating, may burn electrical components, and often produce smoke and unusual odors.​

Emergency Remedies​

For a discharged battery: Use a jump-start method—connect the battery to another device’s battery, ensuring correct connection of the positive and negative terminals. After the operation, check the generator’s functionality to prevent repeated battery discharge.​

For a sensor failure that does not affect core operations: With professional assistance, temporarily disable the faulty sensor’s signal (avoid blocking critical safety sensors by mistake). During this period, monitor the equipment status manually—for example, judge the water temperature by touching the engine body or check the oil pressure using the oil dipstick.​

For a cable short circuit: Immediately cut off the power supply, locate the short-circuit point (usually where the insulation layer is damaged), and repair it with insulating tape. If the short circuit is severe, disconnect the faulty cable and temporarily switch to a backup line. After the operation, replace the faulty cable with a new one.​

If you need to purchase mining bulldozer accessories or want to learn more about equipment maintenance knowledge, please feel free to contact us directly. We are committed to providing you with high-quality services and a satisfying purchasing experience!

click here to visit our spare parts web

click here to visit our alibaba （There are more kinds of products）