Exam Question
(a) Describe 2-stroke Main Engine cylinder liner diameter measuring procedure. (8)
(b) What is the modern system for Liner Diameter Measurement? (4)
(c) What are the advantages of modern system over old system? (4)
Class 4 (4th Engineer)
MEP
📅 Sep 2023
Reference Answer
### (a) 2-Stroke Main Engine Cylinder Liner Diameter Measuring Procedure (Traditional Method)
This procedure, often referred to as "gauging," is a critical part of planned maintenance, typically conducted during cylinder unit overhauls every 6000-8000 running hours. The objective is to accurately measure internal wear to assess the liner's condition, predict its remaining service life, and identify any abnormal wear patterns.
**1. Preparation:**
* **Disassembly:** The cylinder head, piston, and piston rings are removed to gain access to the liner's running surface.
This procedure, often referred to as "gauging," is a critical part of planned maintenance, typically conducted during cylinder unit overhauls every 6000-8000 running hours. The objective is to accurately measure internal wear to assess the liner's condition, predict its remaining service life, and identify any abnormal wear patterns.
**1. Preparation:**
* **Disassembly:** The cylinder head, piston, and piston rings are removed to gain access to the liner's running surface.
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