If the radial runout of the camshaft is not to tolerance (variation in concentricity of camshaft) this is rectified with a crankshaft straightening press:
- The camshaft must be mounted only at the first and seventh bearing journals and
- pressure must be applied only at the forth bearing journal.
If scores are present in the bearing journals of the camshaft, the bearing journals are re-ground with a crankshaft grinding machine in accordance with the defined repair size:
- All the bearing journals must be matched to the same repair size.
- It is important to maintain the specified peak-to-valley height.