Jeep Cherokee 2000 - Engine

ENGINE
TABLE OF CONTENTS
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2.5L ENGINE.............................. 1 4.0L ENGINE.............................61
2.5L ENGINE
TABLE OF CONTENTS
page page
DESCRIPTION AND OPERATION
ENGINE.................................2
LUBRICATION SYSTEM.....................2
CYLINDER BLOCK.........................5
CYLINDER HEAD..........................5
CRANKSHAFT ............................5
PISTON AND CONNECTING ROD .............6
CAMSHAFT ..............................6
ROCKER ARM ............................6
VALVES.................................6
VALVE SPRING ...........................7
CYLINDER HEAD COVER ...................7
HYDRAULIC TAPPET.......................7
VALVE GUIDE ............................7
OILPAN.................................7
VALVE STEM SEAL ........................8
INTAKE MANIFOLD ........................8
EXHAUST MANIFOLD ......................8
DIAGNOSIS AND TESTING
ENGINE DIAGNOSIS—INTRODUCTION.........8
SERVICE DIAGNOSIS—PERFORMANCE .......9
SERVICE DIAGNOSIS—MECHANICAL.........10
INTAKE MANIFOLD LEAKAGE DIAGNOSIS .....13
CYLINDER COMPRESSION PRESSURE TEST . . 13
ENGINE CYLINDER HEAD GASKET FAILURE
DIAGNOSIS ...........................13
CYLINDER COMBUSTION PRESSURE
LEAKAGE TEST ........................13
ENGINE OIL LEAK INSPECTION .............14
ENGINE OIL PRESSURE ...................15
SERVICE PROCEDURES
VALVE TIMING...........................15
VALVE, GUIDE AND SEAL ..................15
PISTON—FITTING ........................17
PISTON RING—FITTING ...................18
CONNECTING ROD BEARINGS—FITTING .....21
FITTING CRANKSHAFT MAIN BEARINGS ......23
FORM-IN-PLACE GASKETS.................25
ENGINE PERFORMANCE ..................26
HONING CYLINDER BORES ................26
REPAIR DAMAGED OR WORN THREADS ......27
SERVICE ENGINE ASSEMBLY (SHORT BLOCK) ....27
HYDROSTATIC LOCK .....................27
ENGINE OIL SERVICE .....................27
REMOVAL AND INSTALLATION
ENGINE MOUNTS—FRONT.................29
ENGINE MOUNT—REAR ...................30
ENGINE ................................31
INTAKE MANIFOLD .......................33
EXHAUST MANIFOLD .....................35
CYLINDER HEAD COVER ..................35
ROCKER ARMS AND PUSH RODS ...........36
VALVE SPRING AND SEAL .................37
CYLINDER HEAD.........................38
CYLINDER HEAD.........................40
HYDRAULIC TAPPETS.....................40
VIBRATION DAMPER......................41
TIMING CASE COVER OIL SEAL .............41
TIMING CASE COVER .....................42
TIMING CHAIN AND SPROCKETS ............43
CAMSHAFT .............................44
CAMSHAFT PIN REPLACEMENT.............45
CAMSHAFT BEARINGS ....................47
CRANKSHAFT MAIN BEARINGS .............47
OILPAN................................49
OIL PUMP ..............................50
PISTON AND CONNECTING ROD ............51
REAR MAIN OIL SEAL .....................52
DISASSEMBLY AND ASSEMBLY
CYLINDER BLOCK........................53
CLEANING AND INSPECTION
ROCKER ARMS AND PUSH RODS ...........53
ENGINE CYLINDER HEAD..................54
CYLINDER BLOCK........................54
SPECIFICATIONS
ENGINE SPECIFICATIONS..................55
SPECIFICATIONS—TORQUE................59
SPECIAL TOOLS
2.5L ENGINE SPECIAL TOOLS ..............60
XJ ENGINE 9 - 1