AG Mechanics CDE Practice Exam

A dual element filter has a ________ type filter as the pre-cleaner.

1. Foam

2. Metal

3. Plastic

4. Rubber

The correct answer is: Foam

A dual element filter typically consists of a primary and a secondary filter element. The primary filter, also known as the pre-cleaner, is usually a foam-type filter. Foam filters are effective at capturing large particles and preventing them from reaching the secondary filter element. This setup helps extend the life of the secondary filter and ensures that finer dirt and particles are trapped efficiently. Metal, plastic, and rubber are not commonly used as pre-cleaners in dual element filters for agricultural machinery. Foam pre-cleaners are more prevalent due to their ability to trap larger particles effectively without impeding the airflow significantly.