MAINTENANCE Main Fuel Filter Element Changing Change the main fuel filter element as follows: 1. Open the vehicle fuel tank filler cap to release pressure in the fuel system. Replace and tighten the cap. 2. Clean the outside of the fuel filter housing. See Figure 40. 3. Using a 36-mm socket wrench insert, unscrew the cap on the fuel filter and remove it, along with the filter element. Pull both the cap and the filter element a short distance out of the filter housing. See Figure 42. Allow the fuel to drain off the filter into the housing. Figure 42 Main Fuel Filter 6. Clean the cap and the dirt collector. 4. Remove the cap with the filter element.
To release the filter element, twist the lower edge of the filter element to one side. 7. Replace the O-ring. 8. Install the new filter element in the cap. Make sure the filter element is securely in place. 9. Insert the dirt collector into the filter housing. Make sure the dirt collector is positioned properly in the filter housing. NOTICE: To prevent damage to the filter housing, do not allow dirt to get into the filter housing. Do not empty the dirt collector into the filter case. 10. Screw on the cap with the filter element. Tighten the cap 25 N·m (18 lb·ft). 5. Pull the dirt collector out of the filter housing using the tabs on either side. 86 All information subject to change without notice.
(Rev. 04/08) DDC-SVC-MAN-0055 04/08 Copyright © 2008 DETROIT DIESEL CORPORATION