Jeep Engines - Oljeep

2.46L IN-LINE 4 (CYLINDER HEAD) 11354. Intake Manifold Gasket 56. Heat Stove55. Exhaust Manifold 57. Valve@)REMOVAL AND REPLACEMENT PROCEDURESFor cylinder head specifications, refer to 2.46L EngineSpecifications, ‘Engine Assembly’ section of this chapter.Removal1.Disconnect the battery negative cable.Warning! DO NOT remove the cylinder block drain plugs orloosen the radiator draincock with the system hot andpressurized because serious burns from the coolant can occur.2.3.4.5.6.Drain the coolant and disconnect the hoses at thethermostat housing.Note: DO NOT waste reusable coolant. If the solutionis clean and being drained only to service the engine orcooling system, drain the coolant into a clean containerfor reuse.Remove the air cleaner.Remove the cylinder head cover. Refer to CylinderHead Cover Removal, in this section, for the procedure.Remove the rocker arms and bridge and pivotassemblies. Alternately loosen each capscrew one turnat a time to avoid damaging the bridges.Remove the pushrods.Note: Retain the pushrods, bridges, pivots and rockerarms in the same order as removed to facilitateinstallation in the original locations.7. Disconnect the power steering pump bracket. Set thepump and bracket aside. DO NOT disconnect the hoses.8.9.Remove the intake and exhaust manifolds from thecylinder head.Remove the intake manifold gasket. Refer to theservice manual for the procedures.10. Disconnect the ignition wire connectors and removethe spark plugs.11. Disconnect the temperature sending unit wireconnector and battery negative cable.12. Remove the cylinder head bolts, cylinder head and gasket.Cleaning and Inspection1. Thoroughly clean the machined surfaces on thecylinder head and block. Remove all gasket materialand cement.2.3.Remove any carbon deposits from the combustionchambers and from the top of the pistons.Use a straightedge and feeler gauge to check the flatnessof the cylinder head and block mating surfaces. Fortolerances, refer to 2.461, Engine Specifications,‘Engine Assembly’ section of this chapter.l- -11