Exam Question

If a main engine piston seizes in its liner at sea and replacement is impossible, the engine must be modified to allow the vessel to limp to port. The primary action is to remove the connecting rod of the affected cylinder, effectively isolating the seized unit. This process varies depending on the piston's position:
Scenario 1: Piston seized at Top Dead Centre (TDC)
This is the more favourable scenario. The procedure involves:
The lower half of the bottom end bearing is secured using a chain block to prevent it from falling into the crankcase during disassembly.