Counterbore Micrometer Caterpillar 9U7986

The Counterbore Micrometer is a measuring tool used during engine block repair and reconditioning tasks. The tool is applied to inspect and verify counterbore dimensions where cylinder liners seat inside the engine block. Accurate measurement is required when liner seats show cracks, wear, and surface damage that affects liner positioning. The micrometer allows controlled measurement of counterbore depth and diameter, provides stable contact surfaces, and fine adjustment capability to support accurate measurements.Attributes:• Helps prevent liner movement caused by incorrect seating depth.• Provides clear measurement reference points.• Supports proper dimensional comparison against specifications.Applications: The Counterbore Micrometer is used on engine blocks at the liner seating area to measure counterbore depth and diameter during salvage machining, ensuring correct liner seating and stable engine operation.