This project was carried out from late 2025 to early 2026 at Qingdao Beihai Shipyard. Our team completed the routine inspection and maintenance for 4 sets of IHI electrohydraulic deck cranes (Model H305185–280, 30.5 mt) within one week to meet the vessel’s tight sailing schedule. A full set of inspection reports with defect records and maintenance suggestions was provided to the customer as required.

1. Pre-operation Visual & Structural Inspection

• Check overall deformation, cracks, or abnormal wear on the main structure, legs, and base.
• Check all pins, locking devices, and connecting bolts for tightness and structural integrity.
• Any structural defects that may affect strength and safety will be recorded and reported.

2. Wire Rope & Hook System Inspection

• Check wire ropes for wear, deformation, rust, breakage, or extrusion damage.
• Check the real condition of the drum and reevings.
• Check the hook, safety latch, and locking device for damage or malfunction.
• Replace any parts that do not meet safe operation standards.

3. Slewing & Luffing Mechanism Inspection

• Check the working condition of the slewing bearing and gear system.
• Check the luffing mechanism and its internal components.
• Check counter-balance valves and load-holding function to ensure stability.
• Check for oil leakage, abnormal noise, or vibration during operation.

4. Hydraulic Power Transmission System Inspection

• Check the hydraulic oil level, quality, oil temperature, and pressure.
• Check for leakage in pumps, motors, valves, pipelines, and connectors.
• Check filter condition and pressure difference.
• Any pressure drop will seriously affect crane response and safety.

5.Safety Interlock Devices & Limit Switches

• Check all limit switches for hoisting, luffing, and slewing.
• Check safety interlock functions to ensure reliable operation.
• This is critical to prevent over-running, over-hoisting, and dangerous misoperation.
  

6. Control Levers & Remote Control System

• Check the control console, levers, buttons, and switches for flexible and correct action.
• Check the remote control system for normal communication and response.
• Replace any faulty signal lamps, indicators, or damaged components.
  

7. Electrical System & E-Box Inspection

• Check electrical cabinets, wiring, connectors, and terminals for tightness.
• Check for loose wires, corrosion, or potential short circuits.
• Ensure the whole electrical system works stably and safely.

Maintenance Tip for IHI H305185-280 Electrohydraulic Crane:

To learn more about related marine equipment inspection, calibration and on-site repair services, you may check our technical article: *On-site Repair of Electric Anchor Windlass Zhoushan Shipyard*