As winter approaches and temperatures plummet, excavators experience a significant increase in malfunctions under cold conditions. How can you properly maintain your machine to ensure it remains in optimal working condition? Today, our maintenance tutorial shares practical tips for winter excavator upkeep!

PART 01 Selecting the Appropriate Grade of Diesel Fuel

Select diesel fuel with the corresponding grade for your excavator based on the actual ambient temperature during winter. Using high-pour-point diesel in cold weather can easily cause fuel “waxing,” preventing the engine from starting smoothly. If waxing occurs, never attempt to force-start the machine. Instead, promptly clean the fuel system and replace the fuel filter, or wait until temperatures rise before restarting. If suitable diesel is temporarily unavailable, add a paraffin-lowering agent as a temporary measure.

Additionally, pay close attention to this detail: Always fill the fuel tank completely before storing the machine. This prevents moisture condensation and freezing inside the tank due to temperature drops. If the tank remains partially empty during extended storage, it becomes susceptible to rust and corrosion.

PART 02 Add Genuine Antifreeze

Based on actual requirements and temperature changes, promptly replace or replenish genuine antifreeze in the excavator to prevent engine block freezing and cracking during cold weather. A crucial reminder: Antifreeze is not exclusively for winter use but should be employed year-round. The common practice of directly adding distilled water is incorrect, as antifreeze not only prevents freezing but also serves as a coolant. During hot summers, it helps maintain optimal engine temperatures, preventing overheating damage.

PART 03 Ensure Adequate Warm-Up Before Operation

Immediately commencing work after starting an excavator in winter can cause severe wear to machine components. Therefore, a warm-up procedure must be performed after startup: First, press the warm-up switch. After 10 seconds of preheating, start the engine and allow it to idle for 5 minutes. Subsequently, operate the working components for 15 minutes to ensure fluids maintain good flowability and reach proper temperature. Simultaneously, verify that all instrument displays and indicator lights are functioning normally. Only after the engine has stabilized should regular construction operations commence.

PART 04 Post-Operation Thermal Protection

In cold weather, excavators lose heat rapidly. If temperatures drop too low, it can damage the engine and shorten equipment lifespan. Therefore, post-operation thermal protection is equally critical. After completing construction work, park the excavator in a garage whenever possible. If outdoor parking is unavoidable, shield the radiator from cold winds with cardboard to minimize heat loss. Additionally, the thermostat is vital for proper engine warm-up in diesel engines. Before winter sets in, inspect the thermostat for proper function and replace it immediately if found defective.