# Comprehensive Guide to Summer High-Temperature Maintenance for Rough Terrain Forklifts: Keeping Your "Steel Warrior" Safe Through the Summer

As temperatures continue to climb, rough-terrain forklifts face severe challenges in high-temperature environments. According to statistics, the failure rate of construction machinery in summer is 40% higher than usual, with 70% of failures directly related to high-temperature operations. This article will detail seven key maintenance points for rough-terrain forklifts in summer to help your equipment maintain optimal condition during the hot season. I. Deep Maintenance of the Engine System (Core Priority) Comprehensive Inspection of the Cooling System Clean the radiator: Use high-pressure airflow in the reverse direction to ensure no blockage in the cooling fins (recommended every 50 hours); Replace the coolant: Choose a wide-temperature-range product from -35°C to +120°C, and ensure the level is between MAX and MIN; Check the water pump: Observe for any leaks, and maintain belt tension with a deflection of 10-15mm. Lubrication System Upgrade Switch to SAE 15W-40 high-temperature-specific engine oil; Shorten the oil change interval to 200 hours (standard is 250 hours); Check oil pressure: No less than 100kPa at idle, and 300-600kPa at rated speed. II. High-Temperature Protection of the Hydraulic System (Critical Link) Hydraulic Oil Management Switch to ISO VG46 high-temperature anti-wear hydraulic oil; Control oil temperature below 65°C (install an auxiliary cooler); Regularly test water content (must be replaced if >0.1%). Seal Inspection Focus on checking cylinder piston rod seals; Replace hardened or deformed O-rings (prioritize fluororubber material); Re-torque pipe joint connections (refer to manufacturer standard values ±5%). III. Preventive Measures for the Electrical System (Easily Overlooked Link) Battery Maintenance Adjust electrolyte density to 1.26-1.28g/cm³; Apply petroleum jelly to terminals to prevent corrosion; Check charging status weekly (voltage above 12.6V). Wiring Protection Inspect insulation aging of wiring harnesses; Clean relay contacts (use electronic cleaner); Install protective sleeves on wiring harnesses (focus on lines near the exhaust pipe). IV. Special Care for Tires/Tracks (Safety Foundation) Tire Maintenance Reduce air pressure by 5-8% (to prevent blowouts from heat expansion); Avoid continuous operation exceeding 2 hours during peak midday heat; Check tread depth (replace immediately if below 3mm). Track Adjustment Loosen tension by 1-2 notches compared to standard values; Remove stones and debris between track plates (clean every shift); Apply high-temperature grease to pins (lithium-based grease NLGI grade 2). V. Cab Environment Optimization (Ergonomics) Air Conditioning System Inspection Check refrigerant pressure (high side 1.5-2.0MPa); Clean the evaporator (use specialized foam cleaner); Check compressor electromagnetic clutch clearance (0.4-0.6mm). Protective Equipment Enhancement Install sunshades (reduce cab temperature by 3-5°C); Equip heatstroke first-aid kits (including Huoxiang Zhengqi water, etc.); Check seat ventilation (airflow speed ≥0.8m/s). VI. Strategies for Special Operating Conditions Operations in Desert Areas Clean the air filter daily (use compressed air in reverse direction); Install sand-proof screens on hydraulic oil coolers; Spray anti-oxidation agents on electrical connectors. Operations in Rainy Environments Drain the brake system (drain accumulated water in the air reservoir weekly); Spray waterproofing agents on wiring connectors; Activate anti-rust mode when parked (run for 30 minutes weekly). VII. Application of Intelligent Monitoring Technology (Cutting-Edge Solution) Install IoT Monitoring Systems Real-time monitoring of oil/water temperature (automatic alarm on exceeding limits); Remote diagnosis of fault codes (supports 4G transmission); Cloud storage of operational data (generates maintenance reminders). Predictive Maintenance Vibration sensors to monitor bearing condition; Oil spectrum analysis (sample every 250 hours); Regular thermal imaging scans (detect abnormal high-temperature points). Professional Advice: Develop a "Summer Equipment Inspection Checklist" covering 28 key inspection items. It is recommended to perform a 15-minute quick inspection before daily operations and conduct one comprehensive maintenance session weekly. After a logistics company implemented this plan, the summer failure rate dropped by 65%, and equipment utilization increased by 22%. Through the above systematic maintenance measures, your rough-terrain forklift will effectively cope with high-temperature challenges. Remember: the cost of preventive maintenance is only one-sixth of breakdown repairs, and scientific maintenance is the best investment to ensure equipment reliability and extend service life.