Exam Question

### (a) Automatic Backlushing Lubricating Oil Filter
#### 1. Purpose and Location
An automatic backlushing filter is installed in the main engine lubricating oil discharge line, after the LO coolers and before the main engine inlet. Its primary function is to provide continuous, fine filtration of the lubricating oil to remove solid contaminants such as metallic particles, carbon deposits, and other debris. This protects critical engine components like bearings, journals, and crosshead pins from abrasive wear, ensuring engine reliability and longevity. The automatic backlushing feature allows for uninterrupted filtration and engine operation.
#### 2. Construction