2500 02 005 Piston & Liner Shim — 0.25 mm thickness
2500 02 005
Summary
This 0.25 mm thickness piston and liner shim features an outside diameter of 166.30 mm and an inside diameter of 160.30 mm. Designed for high-strength durability in heavy commercial vehicle engines, it ensures precise liner protrusion for optimal head gasket clamping.
| EAN Code | 8699031004204 |
|---|
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Description
What does a piston and liner shim do?
This piston and liner shim is a decisive component used to bring liner protrusion in heavy-duty diesel engines into the required target range. By providing a precise thickness, it allows the head gasket to carry a balanced clamping load, which is critical for preventing gas leaks and repeat gasket failures during operation.Technical specifications and fitment
This specific component is engineered with an outside diameter of 166.30 mm and an inside diameter of 160.30 mm, featuring a thickness of 0.25 mm. These dimensions are vital for ensuring the shim fits perfectly on the liner flange to maintain the correct engine clearance and sealing integrity.Installation and maintenance guidance
For professional installation, ensure all surfaces are thoroughly cleaned of gasket residue or corrosion before fitting. It is recommended to measure each cylinder separately, as block wear can vary, and always use a single shim of the correct grade rather than stacking multiple thin pieces to achieve the desired height.Troubleshooting and selection
When performing engine maintenance or liner replacement, always consult the vehicle manufacturer's service manual for specific protrusion measurements and torque sequences to ensure long-term reliability.Technical Specifications
| Outside Diameter (D) | 166,30 mm |
|---|---|
| Inside Diameter (d) | 160,30 mm |
| Thickness (s) | 0,25 mm |
| Number of Packages | 10 |
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FAQ
What is the purpose of a piston and liner shim?
A liner shim is used to adjust the liner protrusion in heavy-duty diesel engines, ensuring the head gasket receives a balanced clamping load to prevent leaks.
How do I know if I need a new shim?
If you are replacing a cylinder liner, you must measure the protrusion and install a matching shim of the correct thickness to ensure proper sealing.
Can I stack two thin shims to reach the required thickness?
No, it is best practice to use a single shim of the correct thickness grade rather than stacking multiple shims, which can compromise stability.
Why is surface cleanliness important when fitting shims?
Any residue or scale on the block shoulder can skew protrusion readings, leading to incorrect measurements and potential engine failure.