Jeep Cherokee 2000 - 4.0 L Engine

4.0L ENGINE
TABLE OF CONTENTS
page page
DESCRIPTION AND OPERATION
ENGINE ................................62
LUBRICATION SYSTEM....................62
CYLINDER BLOCK........................65
CYLINDER HEAD.........................65
CRANKSHAFT ...........................65
PISTON AND CONNECTING ROD ............66
CAMSHAFT .............................66
ROCKER ARM ...........................66
VALVES................................67
VALVE SPRING ..........................67
CYLINDER HEAD COVER ..................67
HYDRAULIC TAPPET......................67
VALVE GUIDE ...........................67
OILPAN................................67
VALVE STEM SEAL .......................67
INTAKE MANIFOLD .......................67
EXHAUST MANIFOLD .....................68
DIAGNOSIS AND TESTING
ENGINE DIAGNOSIS—INTRODUCTION........68
SERVICE DIAGNOSIS—PERFORMANCE ......69
SERVICE DIAGNOSIS—MECHANICAL.........70
INTAKE MANIFOLD LEAKAGE DIAGNOSIS .....72
CYLINDER COMPRESSION PRESSURE TEST . . 73
ENGINE CYLINDER HEAD GASKET FAILURE
DIAGNOSIS ...........................73
CYLINDER COMBUSTION PRESSURE
LEAKAGE TEST ........................73
ENGINE OIL LEAK INSPECTION .............74
ENGINE OIL PRESSURE ...................75
SERVICE PROCEDURES
VALVE TIMING...........................75
VALVE SERVICE .........................75
PISTON FITTING .........................77
PISTON RING—FITTING ...................77
FITTING CONNECTING ROD BEARINGS.......80
FITTING CRANKSHAFT MAIN BEARINGS ......83
FORM-IN-PLACE GASKETS.................86
ENGINE PERFORMANCE ..................87
HONING CYLINDER BORES ................87
REPAIR DAMAGED OR WORN THREADS ......88
SERVICE ENGINE ASSEMBLY (SHORT
BLOCK)...............................88
HYDROSTATIC LOCK .....................88
ENGINE OIL SERVICE .....................88
REMOVAL AND INSTALLATION
ENGINE MOUNTS—FRONT.................90
ENGINE MOUNT—REAR ...................91
ENGINE ASSEMBLY.......................92
INTAKE AND EXHAUST MANIFOLD ...........95
EXHAUST MANIFOLD—4.0L ENGINE .........96
CYLINDER HEAD COVER ..................96
ROCKER ARMS AND PUSH RODS ...........96
VALVE SPRINGS AND OIL SEALS ............97
CYLINDER HEAD.........................98
VALVES AND VALVE SPRINGS .............100
HYDRAULIC TAPPETS....................100
VIBRATION DAMPER.....................101
TIMING CASE COVER ....................101
TIMING CHAIN AND SPROCKETS ...........102
CAMSHAFT ............................103
CAMSHAFT BEARINGS ...................104
CRANKSHAFT MAIN BEARINGS ............105
OILPAN...............................107
PISTONS AND CONNECTING RODS .........108
CRANKSHAFT OIL SEALS—REAR ...........110
OIL PUMP..............................111
TIMING CASE COVER OIL SEAL ............112
DISASSEMBLY AND ASSEMBLY
CYLINDER BLOCK .......................112
CLEANING AND INSPECTION
CYLINDER HEAD ........................113
CYLINDER HEAD COVER .................113
ROCKER ARMS AND PUSH RODS ..........113
HYDRAULIC TAPPETS ....................113
CYLINDER BLOCK .......................114
SPECIFICATIONS
SPECIFICATIONS........................115
TORQUE SPECIFICATIONS ................118
SPECIAL TOOLS
4.0L ENGINE ...........................119
XJ 4.0L ENGINE 9 - 61