MAINTENANCE 2. Turn the adjusting screw until the valve lash is correct using the exact settings listed in Table 28. Use the range only for checking adjustment. 3. Tighten the locknut 25 N·m (18 lb·ft ). 4. Check the valve lash again. Adjust again if necessary. Restoring The Vehicle To Operating Condition — Restore to operating condition as follows: 1. Install the cylinder head cover. See Figure 39. 2. Remove the cranking device from the inspection hole in the timing case. Figure 39 Cylinder Head Cover 3. Replace the end cover on the inspection hole and tighten the bolts 25 N·m (18 lb·ft). Fuel Prefilter Element Cleaning Clean the fuel prefilter element as follows: 1.
Open the fuel filler cap to release pressure in the fuel system. Replace and tighten the cap. Figure 40 Fuel Filters 2. Clean the outside of the prefilter housing. Keep fuel away from hoses or pipes located beneath the filter. See Figure 40. 3. Unscrew the cap on the fuel prefilter. Pull the cap and filter 84 All information subject to change without notice. (Rev. 04/08) DDC-SVC-MAN-0055 04/08 Copyright © 2008 DETROIT DIESEL CORPORATION