Mini loaders are highly efficient construction machines. Due to their compact structure and versatility, they are widely used in a variety of fields, including construction, agriculture, and gardening, as well as in confined spaces. Regular maintenance is crucial to ensure long-term, stable operation. This manual details the maintenance methods and precautions for each major component of a mini loader, helping users extend the life of the equipment and reduce malfunctions.
The engine is the core component of a mini loader. Maintaining it in good working condition is essential for efficient operation.
1.1 Checking the Engine Oil
Regularly check the engine oil level and quality. It is recommended to check the oil level and replace the oil and filter every 250 hours of operation or monthly.
The recommended oil change interval is every 500 hours or according to the manufacturer's recommendations.
Use the recommended oil type and avoid inferior oil to prevent carbon deposits and wear inside the engine.
1.2 Replacing the Air Filter
Check the air filter regularly; it is recommended to replace it every 500 hours, especially in dusty working environments. When cleaning the air filter, blow it out from the inside out with compressed air. However, if damaged, replace it promptly.
Clean the air filter (check every 50 hours in dusty environments). If damaged, replace it immediately.
1.3 Checking the Cooling System
Regularly check the coolant level and cooling effectiveness. If the coolant is low, refill it promptly and use the appropriate coolant.
Check the radiator every 2000 hours or annually to ensure it is not clogged to prevent engine overheating.
Monitor the coolant pH value (6.5-7.5). Use antifreeze in winter and test the freezing point regularly.
The transmission is the key component connecting the engine and the wheels. Ensuring its smooth operation directly affects the performance of the loader.
2.1 Checking the Transmission Fluid
Regularly check the transmission fluid level and quality, checking the oil level every 250 hours or monthly.
Replace the gear oil (API GL-5 grade) every 500 hours and check the shift solenoid valve resistance (normal range: 12-15Ω).
Monitor the torque converter oil temperature (operating temperature ≤ 110°C). If it rises abnormally, check the lockup clutch.
When changing the transmission oil, it is recommended to change the oil every 1000 hours and inspect the oil for deterioration.
2.2 Checking the Transmission Filter
Check whether the transmission oil filter needs to be cleaned or replaced. A clogged filter can cause poor oil flow, affecting normal transmission operation.
The hydraulic system is the power source for the mini loader to perform its tasks. The health of the hydraulic oil and hydraulic components directly determines its operating efficiency and stability.
3.1 Hydraulic Oil Inspection and Replacement
Check the hydraulic oil level every 250 hours. Ensure the oil level is within the specified range.
Hydraulic oil should be replaced regularly, typically every 1000 hours or annually. The specific replacement frequency depends on the operating environment and workload. Use hydraulic oil that meets specifications. Avoid mixing different brands of oil.
3.2 Checking the Hydraulic Filter
Check the hydraulic system's oil filter every 500 hours. Replace any damaged filter element promptly to prevent impurities from entering the system and causing damage.
3.3 Checking the Hydraulic System Pipes
Regularly check the hydraulic pipes for leaks, looseness, or aging. Check the connectors every 500 hours to ensure proper sealing.
The mini loader's drive system and tires are crucial factors affecting operating efficiency. Regular maintenance can improve the equipment's operating efficiency and driving stability.
4.1 Tire Inspection and Maintenance
Regularly check tire pressure, wear, and surface damage. Low tire pressure increases fuel consumption and accelerates tire wear.
When replacing tires, use tires that meet specifications and maintain even wear.
4.2 Checking the Drive System
Check the drive system's belts and chains for looseness or wear, and adjust or replace them if necessary.
Check the lubrication of the drive system every 1000 hours to ensure all moving parts are effectively lubricated to prevent wear and noise.
Brake system maintenance is directly related to operational safety and must be inspected regularly.
5.1 Checking the Brake Fluid
Regularly check the brake fluid level and quality. If the level is low, replenish the brake fluid promptly and use brake fluid that meets the specifications.
Inspect the brake system annually or every 2000 hours to ensure there are no leaks or damage.
Check the brake pad thickness (minimum 3mm). If the water content in the brake fluid exceeds 3%, replace it.
5.2 Checking the Brake Pads and Brake Discs
Check the brake pad wear every 500 hours. If excessive wear occurs, replace the brake pads promptly.
Severely worn or cracked brake discs should be replaced promptly to ensure effective braking.
The electrical system includes important components such as the starting battery, lights, and sensors. Ensuring their stable operation is part of daily operation.
6.1 Battery Inspection
Check the battery voltage and terminals for looseness monthly. Clean the battery contacts if necessary.
The battery replacement cycle is 2-3 years, depending on usage.
6.2 Lighting and Electrical Wiring Inspection
Regularly check the lights, electrical wiring, and switches to ensure they are functioning properly to prevent electrical faults from affecting operation.
7.1 Regular Cleaning
Dust and dirt easily accumulate on loaders during use. Clean the exterior, engine compartment, and other components regularly to prevent heat dissipation and performance degradation.
7.2 Maintenance Records
It is recommended that users maintain a maintenance record, detailing each maintenance session, items performed, and parts replaced to ensure healthy equipment management.
7.3 Tires/Tracks
Maintain a tire pressure of 0.35-0.4 MPa on pneumatic tires. Perform a four-wheel alignment if uneven wear exceeds 5 mm.
Adjust the track tension (allow 30-50 mm of sag) and lubricate the track rollers every 50 hours.
Regular maintenance of your mini loader not only extends the life of the equipment but also ensures efficient and safe operation. By strictly following the manufacturer's maintenance guidelines, you can minimize malfunctions and maximize project efficiency.
If you have any questions about mini loader maintenance, or if you're interested in purchasing or customizing a mini loader, please contact us.
