This article explains how to replace the Doosan DA-30-5 truck water separation fuel filter
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1. Closetheshut-off cock (1) in the fuel pipe and position a container under the filter.
2. Openthedrain tap (2) in the filter cover and let the fluid run down into the container.
3. Unscrewthefilter cover.
4. Unscrewthefilter from the filter head.
5. Discardtheold filter and use a new filter.
6. LubricatetheO-ring in the filter cover with engine oil.
7. Screwthefilter cover onto the new filter by hand. Make sure that the drain tap is fully closed.
8. LubricatetheO-ring on the filter with engine oil.
9. Fillthewidth of the filter with clean fuel.
10. Screwthefilter into position until the O-ring rests against the filter head. Tighten the filter another 1/2-3/4 turn by hand.
11. Opentheshut-off cock and check the system for leaks.
12. Bleedthefuel system.
