In this article, we outline a step to step to replace your suction cleaner diaphragm in your T3 and T5 cleaners. Diaphragm removal: Unscrew the top lock nut (T5 Exploded Part 2, T3 Exploded Part 1). Remove the T3/T5 engine unit from the body of the cleaner (T5 Exploded Part 1, T3 Exploded Part 2). Unscrew and separate the cup assembly (T5 Exploded Part 8, T3 Exploded Part 5) from the outer extension tube (T5 part 7, T3 part 4). NOTE, this step can be incredibly difficult, especially if they...