Determining whether a parts-in-the-head machine head needs maintenance mainly relies on three categories of signals: abnormal operating status, hidden dangers discovered during regular inspections, and changes in usage time or working environment. The specific methods are as follows:
1. Abnormal Operating Manifestations (Most Direct Signal) When the machine head exhibits the following phenomena, it should be stopped immediately for inspection and maintenance:
Increased Abnormal Noise or Vibration: Such as metallic friction sounds or periodic knocking sounds, which may indicate internal gear wear, bearing damage, or abnormal screw clearance.
Overheating: If the machine head casing is noticeably hot to the touch, or the system alarm shows excessive oil/machine head temperature, it indicates a cooling system malfunction or poor lubrication.
Decreased Output Performance: Such as insufficient air compressor pressure, shortened spray distance in a fog cannon, or weakened power output in a lawnmower, which may indicate internal leaks, blockages, or reduced transmission efficiency.
Leakage: If lubricating oil, hydraulic oil, or coolant is found leaking from the machine head seals, check for aging or damage to the shaft seals, cylinder head, and other seals.
2. Problems Found During Regular Inspections Even if the system is operating normally, periodic professional inspections should be performed. Maintenance is required if any of the following conditions are found:
Deteriorated Oil Quality: The lubricating oil is black in color, contains impurities, or is emulsified, indicating it has failed and must be replaced.
Clogged Filters: Pressure differential alarms or visible dirt on the intake filter and oil-gas separator affect airflow efficiency; cleaning or replacement is necessary.
Loose Fasteners: Displacement or loosening of bolts, connecting flanges, etc., may lead to more serious malfunctions; tighten them promptly.
Aging Seals: Cracked or deformed rubber seals that have lost their elasticity pose a risk of leakage; preventative replacement is recommended.