What should be checked and recorded before removing the camshaft?

Before removing the camshaft, it is essential to check and record the location and number of shims. Shims are critical components that help in adjusting the clearance between the camshaft and the valve mechanism. Knowing their exact configuration ensures that when the camshaft is reassembled, the engine timing and valve operation are preserved as intended. This information is crucial for accurately re-establishing the correct gaps and alignment during reinstallation.

This practice helps prevent potential engine performance issues or mechanical failures that can arise from incorrect shim placement or specifications. In essence, documenting shim locations allows for a smoother reassembly process and maintains the reliability and functionality of the engine.

The importance of checking oil levels, valve clearance, and fuel line connections is recognized, but these aspects are typically addressed at different stages of maintenance or servicing. While they contribute to overall engine health, they do not specifically pertain to the immediate requirements of camshaft removal and installation.