Excavators are essential machines in various industries, including construction and mining. Winter can be a challenging season for excavator owners and operators. Cold temperatures, moisture, and harsh conditions can take a toll on these heavy-duty machines. It will affect excavator’s performance and lifespan. To combat these challenges, proper winter maintenance is essential. In this YUFAN blog, we will discuss practical tips to help you maintain your excavator during the winter months, ensuring optimal performance and longevity. Let’s dive in!

1. The First Step for Mini Excavator Maintenance

One of the fundamental maintenance tasks for every excavator operator is greasing. Lubricating grease plays a vital role in keeping the machine running smoothly. Its primary functions include lubrication, protection, and sealing. When applied to various components of the excavator. For example the swivel joint, boom, arm, bucket, and teeth. It reduces friction, minimizes wear and tear, and extends the machine’s lifespan. It acts as a protective barrier. Also, it ensures that these parts operate seamlessly. Even under demanding conditions.During winter, the proper lubrication of your excavator becomes even more critical. Cold temperatures can affect the viscosity and effectiveness of lubricants.

1.1 Using Low Viscosity Diesel & Engine Oil

For winter excavator operation, a low freezing point and good ignition performance light diesel fuel should be selected. Typically, the freezing point of diesel fuel should be lower than the lowest local temperature by 7-10°C. Failure to replace the appropriate grade of diesel fuel promptly in cold winter environments can result in reduced flowability, increased viscosity, poor atomization, deteriorated combustion, and decreased engine performance and fuel efficiency.

In extremely cold regions, it is necessary to consider using higher-grade engine oil when entering winter. Engine oil with higher grades should be used when the ambient temperature ranges from minus 10 degrees to 30 degrees Celsius or higher, whereas for warmer regions, the decision to switch to different grades of engine oil can be based on local conditions.

1.2 Battery Maintenance for Mini Excavators

Lower temperatures can diminish the battery capacity of your excavator, making it more difficult to start. To address this, cover the battery with insulation material, such as a blanket or clothing, to keep it warm. Alternatively, remove the battery from the machine and store it indoors until the next operation day. If you notice low electrolyte levels in the battery, add distilled water or electrolyte before the next day’s work. Remember to avoid additions immediately after completing a day’s operation to prevent freezing.

1.3 Using Antifreeze for Excavator Cooling Systems

When operating the excavator in cold winter conditions, it’s crucial to add antifreeze to the cooling system. The antifreeze should be mixed in the cooling system according to the recommended ratio for the lowest expected temperature. If the equipment will be temporarily parked for an extended period, ensure the engine’s cooling water is drained.

When draining the water, allow the engine to idle until the coolant temperature drops below 60°C and is no longer hot to the touch. Prematurely draining the cooling water at higher temperatures can cause rapid contraction and potential cracking of the engine block. Thoroughly flush any remaining water in the system to prevent expansion and damage due to freezing.

1.4 Long-Term Storage Considerations for Excavators in Winter

As winter arrives, particularly in cold regions, construction activities often experience a slowdown. The occurrence of failed starts for mini excavators is relatively high during this period.

This may require storing the excavator for an extended period until spring. To ensure the excavator remains in good condition during storage, follow these recommendations:

> Set the fuel control lever to idle and place all control levers in neutral.

> Choose a storage location with a solid and level surface, avoiding damp, salty, or dusty environments. If a mini excavator cannot work for an extended period during winter, it should be parked in a shaded area with ample sunlight.

> Retract exposed hydraulic cylinders, protecting them from external impacts and moisture, which can lead to damage or corrosion.

> If feasible, remove the battery and store it indoors, or ensure the battery switch is turned off. For machines without battery switches disconnect the battery cables.

> Start the engine and operate the machine briefly every two weeks to maintain lubrication and prevent rust formation. Additionally, ensure the battery remains charged during storage.

2. Startup Tips for Mini Excavators in Winter

Operating a mini excavator in cold weather requires special attention to ensure smooth startup and optimal performance.

2.1 Preheating Stage

During the preheating stage, it is essential to follow specific steps to prepare your mini excavator for operation in cold weather. These steps include:

2.1.1. Engine Warm-up

Run the engine at medium speed while operating the bucket to facilitate preheating.

2.1.2. Continuous Arm Movement

Gradually extend and retract each arm of the excavator after the engine has reached the desired temperature. This helps in warming up the hydraulic system and ensures smoother operation.

2.1.3. Rotating Tracks

Lift the machine slightly and rotate the tracks to preheat the left and right travel motors separately.

2.2 Diesel Fuel Selection

Choose the appropriate diesel fuel grade (-10 to -30) based on the local climate conditions. This prevents fuel waxing and ensures smooth engine startup. Also, remember to replace the diesel fuel filter.

2.3 Engine Oil

Switch to locally suitable thickened engine oil recommended for cold temperatures. Replace the engine oil filter accordingly. Timely address any oil leaks in the hydraulic system and ensure proper insulation of the hydraulic tank, if possible.

2.4 Check Hoses and Connections

Thoroughly inspect the radiator’s hoses for signs of aging, cracks, or damage. Replace any faulty components promptly, as they are prone to issues during winter.

2.5 Coolant Selection

Avoid adding water directly to the radiator. Instead, use a suitable antifreeze coolant appropriate for the local temperature range. This prevents dilution of the antifreeze and makes it easier to start the engine in extremely cold regions.

3. Conclusion&YUFAN

By following these winter maintenance tips, you can ensure that your mini excavator operates smoothly and efficiently even in cold weather conditions. Proper lubrication, using suitable fuels and oils, and taking necessary storage precautions will help extend the lifespan of your machine and minimize unexpected issues during the winter months.

Are you ready to conquer winter challenges with your YUFAN mini excavator? At YUFAN, we are committed to helping you maximize the performance and longevity of your machinery. YUFAN’s team is here to support you with expert advice and top-notch service. Whether you need maintenance tips, high-quality spare parts, or professional assistance, we’ve got you covered. Stay ahead of the winter weather and keep your YUFAN mini excavator operating at peak performance!

Trust in our expertise and rely on our support to tackle the challenges that the colder months bring. Contact YUFAN today to explore how we can assist you in maintaining your mini excavator and ensuring its reliable performance throughout the winter season. Let’s work together to make this winter a successful one for your machinery.