# Professional Guide for Daily Maintenance and Care of Loaders

As the main equipment for engineering construction, the maintenance of loaders directly affects equipment lifespan and operational efficiency. According to statistics, standardized daily maintenance can reduce failure rates by 40% and extend the overhaul cycle by 2,000 working hours. This guide will detail the scientific maintenance methods for loaders. I. Pre-Shift Daily Inspection (15 minutes) Visual Inspection: Walk around the machine to check for oil or water leaks; check tire pressure (reference calibrated value ±10%); observe tire tread depth (no less than 5mm); inspect the bucket and linkage for cracks or deformation. Fluid Checks: Engine oil (check 10 minutes after shutdown); hydraulic oil level (between the scale marks at an oil temperature of 40°C); coolant level (between MAX and MIN on the expansion tank); brake fluid level (not below the lower limit). Key Component Checks: Tightness of drive shaft bolts; leaks at hydraulic hose connections; lubrication at all grease points; electrical equipment such as lights and horn. II. Maintenance Points Every 8 Hours Cleaning Operations: Remove debris from the radiator (blow out in reverse with compressed air); clean dust from the engine compartment (do not use a high-pressure water jet directly); clean the inside and outside of the cab (maintain a tidy operating environment). Lubrication: Steering joints (use lithium-based grease); bucket pins (3-5 pumps per grease point); drive shaft universal joints (until old grease is expelled). Functional Tests: Test the operation of all gauges; check braking performance (braking distance ≤5m from 20km/h); verify the parking brake (holds for 5 minutes on a 15° slope). III. Weekly Maintenance (50 Working Hours) Fluid Management: Drain water from the fuel tank; check the degree of oil contamination (test strip method); test the coolant freezing point (no higher than -35°C). Filter Checks: Clean the air filter (blow out in reverse at pressure ≤0.5MPa); check the oil filter seal; inspect the fuel filter for water accumulation. Key Component Checks: Check brake pad thickness (no less than 5mm); test steering system responsiveness (free play ≤15°); check tire bolt torque (standard value ±5%). IV. Monthly Maintenance (250 Working Hours) Fluid Replacement: Replace engine oil and filter; replace the hydraulic oil return filter; check the transmission oil level. System Checks: Test hydraulic system pressure (±5% of calibrated value); check hydraulic cylinder seals; adjust engine belt tension. Electrical System: Clean battery terminals (apply petroleum jelly); check wiring harness insulation; test all safety alarm devices. V. Seasonal Maintenance Priorities Summer Maintenance: Clean the cooling system (to improve cooling efficiency); switch to high-temperature hydraulic oil; check the air conditioning cooling performance. Winter Maintenance: Switch to low-temperature engine oil (5W-30); add fuel anti-gelling additive; install a battery insulation cover. VI. Long-Term Storage Maintenance Pre-Storage Treatment: Thoroughly clean the equipment inside and out; fill all oil chambers with fresh oil to standard levels; apply anti-rust grease to exposed metal parts. During Storage: Start and run the machine for 30 minutes each month; periodically rotate tires to prevent flat spots; recharge the battery monthly. Pre-Use Inspection: Replace all fluids and filters; check the seals of all systems; test braking system performance. VII. Maintenance Precautions Safety Regulations: Perform maintenance after shutdown and engine off; use specialized tools; recycle and properly dispose of used fluids. Parts Selection: Use genuine filters; select fluids according to specified grades; use designated grease for critical components. Record Management: Establish maintenance files; record replaced component information; keep fluid analysis reports. Professional Advice: Implement the "Five Fixed" maintenance system (fixed location, fixed personnel, fixed schedule, fixed standards, fixed records). After adopting this method at one site, equipment availability increased from 82% to 98%, and maintenance costs dropped by 35%. By strictly following this maintenance specification, your loader will always remain in optimal working condition. Remember: the cost of preventive maintenance is only one-sixth of breakdown repairs, making it the most economical investment in equipment management. It is recommended to incorporate the maintenance plan into daily management assessments to ensure full implementation of the standards.