1. Engine
Symptoms: Difficulty starting, unstable power output, significantly increased fuel consumption, blue smoke (oil burning) or black smoke (incomplete combustion).
Detection Standards: Cylinder pressure below 80% of rated value, piston ring wear exceeding limits, excessive crankshaft axial clearance.
Conclusion: As the "heart" of the machine, the engine requires disassembly and overhaul or replacement if internal wear is severe.
2. Hydraulic System
Symptoms: Slow operation, insufficient pressure, excessively high oil temperature, pipeline leaks, abnormal noise from the hydraulic pump.
Detection Standards: Hydraulic oil emulsification and deterioration, excessive oil contamination, main pump volumetric efficiency decrease exceeding 20%.
Conclusion: Hydraulic system malfunctions directly affect driving, vibration, and steering functions, requiring comprehensive inspection or replacement of key components.
3. Vibration Wheel and Excitation Mechanism
Symptoms: Weak vibration, uneven amplitude, abnormal bearing noise, aging and cracking of damping blocks.
Inspection Standards: Vibratory bearing radial clearance > 0.1mm, eccentric shaft wear, lubricating oil emulsification.
Conclusion: The vibratory roller is the core of the compaction operation. If it malfunctions, internal components must be disassembled, repaired, or replaced.
4. Transmission System and Walking Mechanism
Manifestations: Gearbox shifting sticking, clutch slippage, walking bearing overheating, abnormal track/tire wear.
Inspection Standards: Gear meshing clearance exceeding limits, main clutch plate wear exceeding limits, walking reducer oil leakage.
Conclusion: Transmission system problems affect the overall machine's operational stability; major overhaul is required when wear limits are reached.
5. Structural Components and Safety System
Manifestations: Frame cracks, weld cracks, loose center hinge shaft, brake failure.
Inspection Standards: Cracks in load-bearing components (e.g., crankshaft, frame), excessive braking distance.
Conclusion: Structural damage posing safety hazards must be immediately taken out of service and overhauled; otherwise, accidents may occur.
✅ Professional advice: Technical assessment can be conducted according to the "Standards for Repair and Replacement of Worn Parts". When wear of parts affects the accuracy and performance of equipment or poses a safety hazard, repair or replacement should be given priority.
