2500 02 004 0.20 mm Piston & Liner Shim
2500 02 004
Summary
This 0.20 mm Piston & Liner Shim features an outside diameter of 166.30 mm and an inside diameter of 160.30 mm. Engineered for heavy-duty engine assembly, it ensures precise liner protrusion to maintain optimal cylinder head gasket sealing in heavy commercial vehicle engines.
| EAN Code | 8699031004198 |
|---|
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Description
This piston and liner shim is a critical component used to bring the cylinder liner protrusion into the precise target range within heavy-duty diesel engines.
A shim selected at the correct thickness and fitted as a single piece onto a clean surface lets the head gasket carry a balanced clamping load, preventing gas leaks and repeat gasket failures. These high-strength components are essential for maintaining engine compression and sealing integrity during an overhaul or liner replacement.
When performing installation, ensure all surfaces are thoroughly cleaned of gasket residue or scale to prevent false protrusion readings. It is vital to use a single shim of the correct thickness rather than stacking multiple pieces, and each cylinder should be measured separately to account for block wear variations. For exact torque values and installation sequences, always refer to the vehicle manufacturer's service manual.
Consult your authorized distributor to ensure correct fitment for your specific engine requirements.
A shim selected at the correct thickness and fitted as a single piece onto a clean surface lets the head gasket carry a balanced clamping load, preventing gas leaks and repeat gasket failures. These high-strength components are essential for maintaining engine compression and sealing integrity during an overhaul or liner replacement.
When performing installation, ensure all surfaces are thoroughly cleaned of gasket residue or scale to prevent false protrusion readings. It is vital to use a single shim of the correct thickness rather than stacking multiple pieces, and each cylinder should be measured separately to account for block wear variations. For exact torque values and installation sequences, always refer to the vehicle manufacturer's service manual.
Consult your authorized distributor to ensure correct fitment for your specific engine requirements.
Technical Specifications
| Outside Diameter (D) | 166,30 mm |
|---|---|
| Inside Diameter (d) | 160,30 mm |
| Thickness (s) | 0,20 mm |
| Number of Packages | 10 |
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FAQ
What is the purpose of a piston & liner shim?
It is used to adjust the liner protrusion height, ensuring the cylinder head gasket receives the correct clamping load for a reliable seal.
How important is surface cleanliness during installation?
Surfaces must be completely free of residue or corrosion; any debris on the block shoulder will result in inaccurate protrusion measurements.
Can multiple shims be stacked together?
No, it is recommended to use a single shim of the correct thickness grade rather than stacking multiple thin shims to ensure stability.
When should I replace the liner seals?
If the cylinder liner is removed, the lower sealing elements must always be renewed to prevent coolant from leaking into the crankcase.