1. Disconnect negative battery cable. If vehicle is equipped with dual batteries, disconnect both negative battery cables. Disconnect the Manifold Absolute Pressure (MAP) sensor harness connector and vacuum line. See Fig. 64.
2. Remove the air charge cooler inlet tube. See Fig. 65. Detach the heater hoses from the stand-offs. See Fig. 66. Remove the stand-offs. See Fig. 67. Detach the wiring harness. See Fig. 68.
3. Remove the oil level indicator tube nut and position the oil level indicator tube aside. See Fig. 69. Disconnect the fuel injector/glow plug retaining clip and disconnect the fuel injector/glow plug 9 pin harness connector.
4. Remove the 10 valve cover bolts and the valve cover. Remove the valve cover gasket.
Disconnect the 4 electrical leads from the glow plugs. See Fig. 59 and Fig. 60 . Disconnect the 4 electrical connectors from the fuel injectors. Remove the valve cover gasket.
5. To install, reverse the removal procedure. Install NEW valve cover gasket. Install positive and negative battery cables to battery. Tighten valve cover bolts and battery cable terminals to specification. See TORQUE SPECIFICATIONS.