MBE 900 ENGINE 2007 OPERATOR'S GUIDE 1. Turn off the vehicle. 10. Connect the electrical connector plug to the fuel pre-heater element. Install the ground lead for the fuel pre-heater to the fuel filter/water separator housing. 2. Place the fuel drain hose in a collection container and open the drain lever. Once the fuel stops draining from the line, close the drain lever. 11. Connect the WIF sensor harness connector to the fuel filter/water separator housing. 3. Disconnect the connector plug to the fuel pre-heater element. Remove the ground lead for the fuel pre-heater from the fuel filter/water separator housing. 12. Ensure fuel drain lever is in closed position (counterclockwise). 13.
Prime the fuel system using the hand primer on the fuel filter/water separator. 4. Disconnect the harness water-in-fuel (WIF) sensor connector from the fuel filter/water separator housing. See Figure 39. Secondary Fuel Filter 5. Remove the water collection bowl from the filter housing using a 36 mm wrench/socket and remove bowl and seal ring. Discard seal ring. See Figure 39. Perform the following to remove the secondary fuel filter: 1. Turn off the vehicle. 2. Remove the cover from the filter housing using a 36 mm wrench/socket and remove the cover and seal ring. Discard seal ring. 6. Remove the primary filter element from the filter housing and discard the element. See Figure 39. 3.
Remove the element from the cover and discard. 7. Install the new primary fuel filter, ensuring that the element is firmly seated against the filter housing. 4. Insert a new element into the cover and lubricate the element seal (in the bottom end). 8. Install a new seal ring on the fuel filter/water separator bowl and lubricate with clean engine oil. See Figure 39. 5. Install cover and element assembly into the housing and tighten the cover to 25 N·m (221 lb·in.). 9. Thread the bowl into the housing and tighten bowl to 13.5 N·m (120 lb·in.). All information subject to change without notice. (Rev. 04/08) 97 DDC-SVC-MAN-0040 0704 Copyright © 2008 DETROIT DIESEL CORPORATION