In high-temperature summer operations, bulldozers face critical challenges like engine overheating and hydraulic system failures. Below are six key system-focused maintenance strategies to ensure equipment reliability during the hot season:

1. Cooling System Deep Cleaning & Maintenance

• Regularly remove dust and oil from radiator fins to prevent heat dissipation decline and engine overheating.

• Check coolant concentration and freezing point; use long-life antifreeze and refill as needed.

• Test fan belt tension to ensure proper cooling fan operation in high temperatures.

2. Hydraulic System High-Temperature Protection

• Monitor hydraulic oil temperature (normal ≤80°C); inspect filters and oil degradation if threshold is exceeded.

• Use high-viscosity-index anti-wear hydraulic oil to reduce viscosity loss in summer heat.

• Check cylinder seals for aging to prevent hydraulic leaks caused by thermal stress.

3. Engine Heat Dissipation Optimization

• Clean air filters regularly to maintain unobstructed intake and reduce engine load.

• Inspect water pump and thermostat functionality to avoid cooling cycle failures.

• Remove carbon deposits from exhaust pipes to minimize backpressure and stabilize power output.

4. Electrical System Moisture & Aging Prevention

• Focus on battery terminal corrosion; apply petroleum jelly to prevent oxidation and power leakage.

• Reinforce wiring connections and replace aged insulation to avoid high-temperature short circuits.

• Test starter motor and generator voltage to ensure stable power supply in extreme heat.

5. Tire & Chassis Thermal Wear Control

• Maintain tire pressure slightly below normal values to prevent heat-induced blowouts.

• Check track tension and idler lubrication to minimize heat-accelerated chassis wear.

• Clean mud and sand from the chassis after operation to reduce thermal conduction damage.

6. Lubrication System Summer-Specific Maintenance

• Switch to high-temperature-rated grease (e.g., lithium-based No.2 grease) for enhanced bearing wear resistance.

• Shorten grease application intervals, prioritizing articulation points and swing supports.

• Inspect engine oil quality and level; use multi-viscosity oil (e.g., 15W-40) for summer operations.

Maintenance Schedule Recommendations

• Daily Pre-Operation: Visual cooling system check + initial hydraulic oil temperature test

• Weekly Maintenance: Electrical connection tightening + chassis lubrication points replenishment

• Monthly Deep Maintenance: Engine/hydraulic oil quality inspection + professional radiator cleaning