1.2 CYLINDER HEAD 4. Install dummy fuel injectors, to the injector bores to assure proper seating of the fuel injector tubes. See Figure 1-38. Figure 1-38 Dummy Fuel Injector Installation 5. Install the fuel injector clamps and hold-down bolts. Torque the bolts to 58-66 N·m (43-49 lb·ft). See Figure 1-38. 6. Attach an air hose to the fitting on the thermostat opening cover plate. 7. Apply 207 kPa (30 psi) air pressure to the cylinder head and immerse the head in a water bath heated to 82-93°C (180-200°F). 8. Leave the head in the bath for at least 20 minutes to heat thoroughly, while watching for bubbles indicating a crack or leak. [a] If an injector tube leaks, replace tube(s).
Refer to section 2.4.1for removal and refer to section 2.4.6for installation of new injector tube. [b] If a cracked cylinder head is detected, replace the cylinder head. Refer to section 1.2.5. (Rev. 2005) All information subject to change without notice. 1-48 6SE483 0507 Copyright © 2005 DETROIT DIESEL CORPORATION