Верхний вал расточенного отверстия Caterpillar 5P1657

The Counterbore Top Shaft is used during engine block repair when cracks develop in the cylinder liner counterbore area and enables accurate machining of a new counterbore so a liner seat insert can be correctly installed. supports proper cutting operations that prepare the engine block for restoring standard counterbore depth. Works with counterboring tools to guide controlled material removal during liner seat correction.Attributes:• Supports controlled cutting depth during counterbore restoration.• Helps prevent uneven liner seating after repair.• Allows proper seating preparation for liner seat inserts.Applications: The Counterbore Top Shaft is positioned within the engine block during counterbore repair operations, where it guides machining tools to restore damaged cylinder liner counterbores and prepare accurate seating surfaces for liner seat inserts, ensuring proper liner fit and engine operation.