Key points of periodic maintenance
♦ Power system maintenance: Maintenance is carried out every 500 hours of use, including diesel filter replacement (with oil-water separation function), EGR valve carbon deposit cleaning (ultrasonic cleaning), and turbocharger axial clearance detection (standard value 0.03-0.08mm).
♦ Water system maintenance: Every quarter, the inside of the tank is cleaned under high pressure (≥10MPa), the check valve is tested for sealing (leakage rate <0.1L/min), and the pipeline is pulse tested (maintained at 1.5 times the working pressure).
♦ Structural parts inspection: Every six months, the frame welds are inspected by magnetic particle inspection (with a focus on the rear suspension connection), the leaf spring U-bolts are torqued back (standard torque ±5%), and the drive shaft universal joint clearance is measured (angular clearance <15°).
