TSHD Spare Parts List | 2-Years Maintenance

2026-03-15 13:17:26     Category：Technical Resources     Browse number：145     Release time：2026-03-15 13:17:26

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 Spare Parts List for Trailing Suction Hopper Dredgers (6 Core Categories) 1- 2 Years

I. Dredging Core System Spare Parts (Core of Dredger Operations, Highest Wear)

• Suction Head Components: Ripper teeth (including wear-resistant alloy ripper teeth, 3-4 sets spare), wear-resistant liners/shields for suction head, connecting pins/clamps for suction head, complete hydraulic cylinder seals for suction head, steel wire rope for suction head lifting (1 full piece spare), steel wire rope buckles/rigging;

• Mud Pump System: Mud pump impellers (1-2 pieces spare, distinguished between main and auxiliary mud pumps), wear-resistant sleeves for mud pumps/pump body liners, mechanical seals (special for mud pumps, 4-6 sets spare), bearings (2 sets each for main and auxiliary shafts of mud pumps), bushings/sealing rings;

• Dredging Piping System: Wear-resistant rubber linings for suction and discharge pipes (segmented spare, adapted to pipe diameter), flange gaskets (special for dredging pipes, high-pressure and wear-resistant, 50-80 pieces of multiple specifications spare), expansion joint seals, valve plates/sealing rings/actuator accessories for dredging butterfly valves/gate valves;

• Other Dredging Spare Parts: Seals/bearings for hopper agitators, vacuum relief valve accessories, short dredging hoses (1-2 pieces spare).
  
  

II. Power Propulsion System Spare Parts (Core Power for Navigation + Operations, Ensuring Uninterrupted Operation)

• Main Engine Spare Parts (main propulsion diesel engine, e.g., WEI CHAI /STX/MAN: Piston rings, piston pins, main bearings/connecting rod bearings (1 set each spare), fuel injectors (2 pieces per engine), fuel filters/oil filters/air filters (6-8 sets each, including coarse and fine filtration), oil cooler seals, water pump impellers/water seals, turbocharger bearings/sealing rings (1 set spare), high-pressure oil pipes (spare for key sections);
  
  Chinese Engines like Major engine manufacturers such as Weichai, Guangchai, and Ningdong have extensive after-sales service networks overseas, making it very convenient to purchase spare parts.

• Auxiliary Engine/Generator Set Spare Parts: Three filters (fuel/oil/air filters, 8-10 sets each), spark plugs/injectors, generator carbon brushes/slip rings, exciter accessories, cooling water pump seals;

• Shafting and Propeller: Wear-resistant sleeves for propeller blades, complete stern tube seals (2 sets spare), stern tube bearings/brass bushings, coupling rubber pads/bolts, thrust bearing accessories;

• Propulsion Auxiliaries: Hydraulic seals for steering gear, rudder blade bearings, impellers/seals/bearings for bow thrusters (if equipped).

III. Hydraulic and Control System Spare Parts (Core of Shipwide Power Transmission, Vulnerable to Seals/Solenoid Valves)

• Hydraulic System: Various hydraulic cylinder seals (full-ship specifications, 2-3 sets spare, including dust rings/oil seals/sealing rings), blades/rotors/seals for hydraulic pumps (gear pumps/plunger pumps, 1 set of core pump accessories spare), hydraulic oil filters (high-pressure/low-pressure, 10-15 sets spare), hydraulic pipe joints/elbows (multiple specifications spare), accumulator bladders/inflation valves;

• Control and Electrical System: PLC core module (1 piece spare), sensors (pressure/liquid level/speed/displacement sensors, 2-3 pieces each, special for dredging/engine room), solenoid valves/solenoid directional valves (5-8 pieces spare), relays/contactors (multiple specifications spare), marine flame-retardant cables (short sections of multiple specifications spare), instruments (pressure gauges/liquid level gauges, 3-5 pieces spare);

• Operation Auxiliaries: Cab operating handles/buttons, hydraulic station cooler fans, junction boxes/terminal blocks.

IV. Piping and Valve Spare Parts (Shipwide Fluid Transmission, Including Fresh Water/Sea Water/Fuel Oil/Hydraulic Oil/Dredging Fluid)

• General Valves: Sealing rings/valve stems/handwheels for marine butterfly valves/gate valves/ball valves (adapted to full-ship valve diameters, 2-3 sets of each specification spare), check valve cores/springs, globe valve accessories;

• Fluid Piping System: Anticorrosive zinc blocks for sea water cooling piping (10-15 pieces of multiple specifications spare), filter elements/sealing gaskets for fresh water systems, antistatic gaskets/joints for fuel oil piping, insulation sleeves/sealing gaskets for steam piping;

• General Accessories: Marine flanges (8-10 pieces of multiple specifications spare), pipe clamps/ferrules (multiple specifications), marine-specific sealant (multiple tubes), metal hoses (5-8 short pieces spare).

V. Auxiliary Engine System Spare Parts (Ensuring Normal Ship Operation, Including Water Supply/Power Supply/Ventilation/Fire Protection, Etc.)

• Water Supply/Ballast System: Impellers/seals/bearings for ballast pumps/fresh water pumps (2 sets each spare), sea water filter elements (20-30 pieces spare), remote control valve accessories for ballast tanks;

• Ventilation/Air Conditioning System: Impellers/bearings/belts for engine room ventilators (3-4 sets spare), air conditioning compressor seals/filters, air conditioning refrigerant (2-3 bottles spare);

• Fire Protection/Life-Saving System: Fire extinguisher accessories (pressure gauges/nozzles, full set spare), fire pump seals/impellers, fire hoses (2-3 pieces spare), lifeboat engine spare parts (filters/spark plugs);

• Other Auxiliaries: Oil-water separator filter elements (10-15 sets spare), incinerator accessories (nozzles/filter elements), bilge pump impellers/seals (2 sets spare).

VI. General Vulnerable and Consumable Spare Parts (Shipwide Universal, High-Frequency Replacement, Configured in Sufficient Quantity as Needed)

• Bearings and Seals: Various rolling bearings (deep groove ball/self-aligning bearings, 20-30 pieces of multiple specifications spare), O-rings (full-ship specifications, 2-3 sets spare), skeleton oil seals (15-20 pieces of multiple specifications spare), packing (high-temperature/high-pressure resistant, 5-10 rolls each spare);

• Fasteners and Wear-Resistant Parts: Marine high-strength bolts/nuts (50-100 sets of multiple specifications spare, including stainless steel/carbon steel), flat washers/spring washers (multiple specifications), wear-resistant welding electrodes/wire (special for dredging systems, 2-3 boxes spare), cutting/grinding wheels;

• Lubricants and Consumables: Marine lubricating oil/hydraulic oil/gear oil (sufficient quantity spare, according to equipment model), high-temperature/high-speed grease (multiple barrels), diesel anti-freeze/water remover, cleaning agent/rust remover;

• General Electrical Parts: Marine explosion-proof/waterproof light bulbs/tubes (10-15 pieces spare), fuses/cartridges (20-30 pieces of multiple specifications spare), terminal blocks/wire clips, storage batteries (1-2 pieces spare, for emergency starting).

Key Supplementary Notes

1. Spare Parts Classification: 2-year spare parts shall be divided into Level 1 spare parts (onboard spare for emergency replacement, such as seals, filters, and ripper teeth) and Level 2 spare parts (wharf/warehouse spare for regular maintenance, such as impellers, bearings, and steel wire ropes) to avoid excessive onboard spare parts occupying space;

2. Model Matching: All spare parts must strictly match the original factory models of the ship's main engine, mud pump, hydraulic system, and suction head. Especially for imported equipment, original channels or qualified alternative parts should be locked in advance;

3. Wear Adjustment: If the ship operates in harsh environments within 2 years (such as reef areas or high-sediment waterways), the quantity of vulnerable parts for the dredging system, mud pump, and suction head needs to be increased by approximately 30%-50%;

4. Compliance Requirements: Spare parts for fire protection, life-saving, and environmental protection systems (such as oil-water separators and incinerators) must comply with the specifications of classification societies (CCS/DNV/BV) to ensure compliant ship inspection after maintenance.

Significant differences in the consumption of spare parts may result from different operating sea areas, engineering projects, and usage habits. Yanyang Marine can provide configuration suggestions, ensure the most reasonable use, and arrange full-life-cycle maintenance work according to customer needs. The following list is a 2-year spare parts plan customized by Yanyang Marine for customers.

5500 TSHD Trailing Suction Hopper Dredger - Spare Parts List for 2 years