1400 02 025 0.30 mm Piston & Liner Shim
1400 02 025
Summary
Precision 0.30 mm thickness Piston & Liner Shim designed for heavy-duty diesel engine overhauls. Features an outside diameter of 137.10 mm and an inside diameter of 132.50 mm, ensuring correct liner protrusion for optimal cylinder head gasket clamping.
| EAN Code | 8699031004143 |
|---|
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Description
What does a Piston & Liner Shim do?
This Piston & Liner Shim is a critical component used to adjust the liner protrusion in heavy-duty diesel engines, ensuring the cylinder liner stands at the precise height above the block deck. By achieving the exact target range, this shim allows the head gasket to maintain a balanced clamping load, which is essential for preventing combustion gas leaks and subsequent gasket failures during engine operation.Technical specifications and application
Designed for high-performance applications such as the DS 8 engine, this component features an outside diameter of 137.10 mm and an inside diameter of 132.50 mm with a thickness of 0.30 mm. It is engineered to withstand the intense thermal and pressure cycles encountered in heavy commercial vehicle engines, providing long-term sealing reliability.Installation and maintenance guidance
For successful installation, technicians must ensure that all seating surfaces are thoroughly cleaned of residue or scale to prevent false protrusion readings. It is vital to use a single shim of the correct thickness rather than stacking multiple thin layers. After fitting the shim, always follow the manufacturer's specified torque sequence and values for the cylinder head bolts.Selection and inspection tips
When performing an engine overhaul, inspecting the shim for any signs of deformation or burrs is recommended before installation to ensure a perfectly flat contact surface.Technical Specifications
| Outside Diameter (D) | 137,10 mm |
|---|---|
| Inside Diameter (d) | 132,50 mm |
| Thickness (s) | 0,30 mm |
| Number of Packages | 10 |
| Application | DS 8 |
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FAQ
What is the purpose of a piston and liner shim?
A piston and liner shim is used to set the correct liner protrusion above the engine block deck, ensuring even clamping pressure on the head gasket to prevent leaks.
How important is the thickness of the shim?
The thickness is critical; a precise 0.30 mm shim ensures the cylinder liner sits at the required height, which is vital for maintaining proper combustion chamber sealing.
Can I stack two thin shims instead of one thick one?
It is not recommended to stack shims; you should always select a single shim that matches the required thickness grade to ensure stability and accuracy.
What should I check before installing a new shim?
Technicians should inspect the shim for any burrs or deformations and ensure the block seating surface is completely clean and free from corrosion or scale.