Excavators are critical for construction and mining—regular maintenance extends their life, cuts failures, and ensures safety. Below are key precautions for core maintenance links.
Engine maintenance: Core of power stability
1.Safe shutdown & cooling
Park on flat ground, turn off the engine, pull out the key. Wait for full cooling to avoid burns from high-temp parts or splashing fluids. Never maintain a running/hot engine.
2.Fluid inspection & replacement
Use manufacturer-specified oil, coolant, and fuel. Tighten the oil drain plug when changing oil; recheck the oil level after idling for 2-3 minutes.
3.Component cleaning
Clean the air filter (dry: blow with compressed air; wet: use special cleaners). Replace fuel/oil filters on schedule to block impurities.
4.Eco & safety
Avoid long idling in closed spaces (prevent CO poisoning). Dispose of waste oil/filters as per environmental rules.
Electrical maintenance: Prevent short circuits
1.Power cut & static discharge
Turn off the main switch, disconnect the battery (negative first). Discharge energy-storage components; use insulating gloves/tools.
2.Dry & clean components
Wipe electrical boxes, wiring harnesses, and connectors with a dry cloth or compressed air. Avoid water/flammable cleaners to prevent short circuits.
3.Wiring & connector checks
Fix worn/cracked harnesses (tape or replace). Clean corroded connectors with contact cleaner; ensure firm connections to avoid vibration-induced poor contact.
4.Avoid improper modification
Don’t alter circuits or add devices without manufacturer approval. Use matching parts (batteries, starters) and maintain batteries (clean terminals, avoid overcharging).
Mechanical maintenance: Reduce wear
1.Lubrication
Add specified grease to lubrication points (pin shafts, bearings). Keep points clean; don’t overfill sealed components. Wipe excess grease.
2.Hydraulic system checks
Inspect for oil leaks (replace seals/gaskets if needed). Replace hydraulic oil/filters if the oil is discolored/turbid. Bleed air to avoid abnormal noise.
3.Walking mechanism adjustment
Check track tension (adjust per specs to prevent wear/derailment). Clean track debris; repair/replace worn rollers/idlers.
4.Working device inspection
Replace worn bucket teeth. Stop use and weld-repair cracks on the arm/boom (don’t operate with cracks).
Structural maintenance: Ensure integrity
1.Inspection
Visually check the frame/turntable for deformation/cracks. Use non-destructive testing (e.g., ultrasonic) on key stress parts regularly.
2.Corrosion protection
Clean rust/mud; polish rusted areas and apply anti-rust paint. Touch up peeling paint.
3.Connecting parts stability
Tighten bolts with a torque wrench; install cotter pins/lock nuts. Replace worn pins/bushings.
4.Cab & safety devices
Replace cracked cab glass. Check seat belts/safety locks; clean the AC filter and instrument panel. Maintain the cab’s shock absorption system.
Conclusion
Excavator maintenance requires professionalism and standardization. A regular maintenance mechanism guarantees optimal equipment performance.
If you are interested in this or would like to learn more about excavators, please feel free to contact us.