Valve Gear - Auxiliary Machinery and Engine Room
Valve gear is the camshaft-driven mechanism that controls opening and closing of inlet and exhaust valves in marine diesel engines. It typically includes cams, tappets or followers, pushrods, rocker arms, valve bridges, springs and associated guides.
ProShipWorks provides end-to-end support to source and supply Valve Gear for marine vessels, ship operators, industrial facilities, maintenance teams and procurement departments.
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Product Information
| Product Name | Valve Gear |
|---|---|
| Product Category | Auxiliary Machinery and Engine Room |
| Product Reference | 56 |
| Brands / Manufacturers | Wärtsilä, MAN Energy Solutions, Yanmar |
| Unit of Measure | Set or Piece |
Key Features
| Key Feature |
|---|
| 1. Precisely controls inlet and exhaust valve timing |
| 2. Hardened wear surfaces for continuous engine-room service |
| 3. Adjustable valve clearance according to OEM limits |
| 4. Lubricated through the engine lubricating-oil system |
| 5. Components are specific to engine model and serial number |
Applications of Valve Gear
| Application |
|---|
| 1. Main propulsion diesel engines |
| 2. Auxiliary generator engines |
| 3. Diesel-driven pumps and other engine-room machinery |
Models & Manufacturers
| Model | Manufacturer |
|---|---|
| Wärtsilä 46F valve gear | Wärtsilä |
| MAN 48/60CR valve gear | MAN Energy Solutions |
| Yanmar 6EY18ALW valve gear | Yanmar Power Technology |
Technical Specifications
| Model | Specification | Value | Unit |
|---|---|---|---|
| Wärtsilä 46F | Engine cycle | 4-stroke | — |
| MAN 48/60CR | Engine cycle | 4-stroke | — |
| Yanmar 6EY18ALW | Engine cycle | 4-stroke | — |
Standards, Certifications & Class Approval
Review the available standards and approval information relevant to the product. Actual certification, material traceability, inspection and classification requirements depend on the product type, intended application and purchasing specification.
| Applicable Standards & Certification | No universal standalone valve-gear certification applies. Components must conform to the engine manufacturer's drawings, material specifications, tolerances and service instructions. The complete engine may be designed and tested under ISO 3046 and applicable flag-state requirements. |
|---|---|
| Class Approval | Valve gear is normally accepted as part of the engine's type approval or class survey scope. Approval may be provided by DNV, ABS, Lloyd's Register, Bureau Veritas or ClassNK, depending on the engine, vessel and replacement-part documentation. |
Installation, Maintenance & Safety Information
| Installation Notes | Confirm the engine model, serial number and component part number. Install with correct timing marks, fastener torque, lubrication and cold or hot valve clearance specified by the OEM. Verify free movement before starting. |
|---|---|
| Maintenance Tips | Inspect rocker arms, rollers, bushes, valve bridges, springs and cam surfaces for wear or cracking. Check lubrication flow and valve clearance at OEM intervals, and record clearance trends to identify valve-seat recession or component wear. |
| Safety Notes | Stop and isolate the engine, engage turning-gear interlocks and prevent automatic starting. Release spring loads only with approved tools. Keep clear of moving rocker gear and rotate the engine only under controlled conditions. |
Request a Quote for Valve Gear
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