This shim is a precision-engineered component used to adjust clearances and maintain proper alignment within the engine's valve train or other critical assemblies. Manufactured to exact Volvo specifications, it ensures accurate positioning and smooth operation, unlike a worn or incorrect shim. Operators might notice increased valve noise, rough idling, or a loss of engine power if this shim is missing, worn, or improperly installed.
Always verify with serial number before ordering.
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Cross-reference part number with serial number before ordering to confirm fitment. Keep original parts until new ones are confirmed correct. Record part numbers replaced for future reference.
Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.
The primary symptom of an incorrect or worn shim is audible valve train noise, such as ticking or tapping, and potentially a rough idle. If ignored, improper valve clearance can lead to reduced engine performance, increased fuel consumption, and potential damage to valves or camshafts. The ultimate risk is severe engine damage from improper valve timing or seating.
Always use a micrometer to verify the thickness of the shim before installation, even if it appears new, to ensure it matches the required specification. Ensure the shim is correctly seated on the valve stem or rocker arm without any tilting.
Inspect the camshaft lobes, rocker arms, and valve springs for wear or damage when adjusting or replacing valve shims.