Gen 5 DD Platform Operators Manual 1. Final Fuel Filter Cap 2. Pre Filter Cap 3. Water Drain Valve Figure 14. Fuel Filter Module 1. Place a catch pan under the fuel coalescer to collect any water/fuel or sediment drained from the fuel coalescer. 2. Open the water drain valve (3) located under the fuel filter module (see above graphic). Collect and dispose of water/fuel or sediment drained from the fuel coalescer in an environmentally responsible manner, according to state and/or federal recommendations. 3. Allow the water/fuel or sediment to drain. 4. Close the water drain valve (3) (see above graphic). Do not over-tighten the water drain valve.
Failure to properly tighten the water drain valve may cause damage to the water drain valve and housing. 5. Prime the fuel system with the built-in hand primer (about 50 strokes). The hand primer should not be used to prime any other type of fuel system service, as it will not provide sufficient priming, which may cause damage to the high pressure fuel pump. How to Restart an Engine Out of Fuel All information subject to change without notice. 77 DDC-SVC-MAN-0217 Copyright © 2022 DETROIT DIESEL CORPORATION