Description
Technical Overview & Product Details
Within the high-pressure fuel injector, internal clearances must be maintained to within micro-meter tolerances. The 146673-53230 serves as a stop for the valve assembly, ensuring that the injector needle opens to the exact distance specified by Yanmar. By regulating this movement, the spacer prevents over-travel and ensures that the fuel delivery remains consistent, precise, and synchronized with the engine’s cycle.
- Compatible Engine Type: Yanmar marine propulsion and auxiliary engine series.
- Part Number / Designation: 146673-53230.
- Component Type: Valve Stop Spacer (Injection Nozzle Shim/Spacer).
- Material: High-grade, hardened alloy steel, ground to exact thickness tolerances.
- Application: Internal fuel injector assembly (nozzle needle lift regulation).
Key Features & Performance
- Precision Thickness: Manufactured to exacting dimensional tolerances to provide the precise valve stop gap required for optimal injector performance.
- High-Stress Durability: Constructed from hardened steel capable of withstanding the constant, high-frequency impacts of the injector needle without deformation or wear.
- Dimensional Stability: Designed to maintain its thickness and geometry despite exposure to high-pressure fuel and intense thermal cycles within the injector body.
- Operational Precision: Ensures consistent needle lift, which is vital for maintaining the spray pattern, atomization quality, and overall fuel efficiency of the diesel engine.
Why Source from Heybeli Marine?
Even a microscopic variation in spacer thickness can cause significant deviations in fuel injection timing and quantity, leading to engine knock, smoke, or reduced power. Heybeli Marine protects your vessel’s performance with:
- Strict OEM Interchangeability: Our 146673-53230 spacers are manufactured to meet the exact thickness and metallurgical requirements of the Yanmar fuel injector specifications.
- Global Strategic Logistics: We maintain an inventory of these critical calibration components, ensuring they are available for precise fuel system overhauls and injector repairs.
- Quality Assurance: Every spacer undergoes rigorous measurement and inspection to ensure thickness accuracy, guaranteeing reliable performance across all fuel injectors in a set.
- Complete Overhaul Support: We provide these spacers alongside nozzles, needles, and nozzle nuts to help you conduct a professional, factory-spec fuel injector rebuild.
Technical Maintenance Note:
When servicing the fuel injector, it is critical to keep spacers clean and free of scratches, as any surface imperfection can lead to an inaccurate measurement or an internal leak. If you are performing a rebuild, use a precision micrometer to verify the thickness of the 146673-53230 before installation. Always ensure that the spacer is perfectly centered and seated correctly within the nozzle holder assembly. We strongly recommend that internal injector calibration—including needle lift adjustment—be performed by qualified technicians using the specific measurements provided in the Yanmar service manual to ensure the engine operates within its intended performance parameters.
