What is the correct method for measuring liner protrusion according to Technician B?

Measuring liner protrusion accurately is essential for ensuring proper engine assembly and performance, particularly in diesel engines. The correct method involves using a dial indicator mounted on a sled. This technique is beneficial because it allows for precise measurements by providing a visual readout that can easily quantify the amount of protrusion from the engine block.

The sled helps stabilize the dial indicator, minimizing any variations in measurement that could arise from manual handling or alignment issues. By using this method, technicians can ensure that the readings are consistent and reliable, which is crucial for making informed decisions about engine maintenance or repairs.

Other methods, such as using a flat bar and feeler blades or a tape measure, may not provide the same level of accuracy and could lead to potential errors in measuring protrusion. While calipers are precise tools, they may not be the best suited for this specific application because they can be cumbersome to use in tight spaces or may not offer the same direct measurement capability as a dial indicator on a sled. Therefore, using a dial indicator mounted on a sled is considered the correct and most reliable method for measuring liner protrusion.