APRILIA M192M Workshop Manual page 27

Engines M192M / M191M / M245M / M234M / M282M / M281M
3.3.11. ASSEMBLING THE BY-PASS AND THE OIL SUMP ...........................................................................61
3.3.12. LUBRICATION DIAGRAM ....................................................................................................................62
3.4. COOLING.......................................................................................................................................................64
3.4.1. REMOVING THE WATER PUMP .........................................................................................................64
3.4.2. CHECKING THE COMPONENTS ........................................................................................................66
3.4.3. ASSEMBLING THE WATER PUMP .....................................................................................................67
3.4.4. CHECKING THE THERMOSTAT .........................................................................................................69
3.5. CRANKCASE AND CRANKSHAFT ...............................................................................................................70
3.5.1. REMOVING THE STARTER MOTOR ..................................................................................................70
3.5.2. CHECKING CRANKSHAFT AXIAL PLAY.............................................................................................71
3.5.3. OPENING THE CRANKCASE ..............................................................................................................72
3.5.4. CHECKING CRANKCASE....................................................................................................................75
3.5.5. CHECKING THE MAIN BEARING........................................................................................................76
3.5.6. CLOSING THE CRANKCASE ..............................................................................................................78
3.5.7. INEASSEMBLING THE STARTER MOTOR.........................................................................................80
3.6. CYLINDER HEAD AND TIMING SYSTEM.....................................................................................................81
3.6.1. DISASSEMBLY OF THE TAPPET COVER ..........................................................................................81
3.6.2. CHECKING THE TIMING SYSTEM......................................................................................................82
3.6.3. CHECKING/ADJUSTING VALVE CLEARANCE ..................................................................................83
3.6.4. FITTING THE TAPPET COVER ...........................................................................................................84
3.6.5. CHECKING END-OF-COMPRESSION PRESSURE............................................................................85
3.6.6. CHECKING IGNITION ADVANCE........................................................................................................86
3.6.7. INTAKE MANIFOLD DISASSEMBLY ...................................................................................................87
3.6.8. REMOVING THE THERMOSTAT.........................................................................................................88
3.6.9. REMOVING THE TIMING GEAR..........................................................................................................89
3.6.10. CAMSHAFT AND ROCKER ARMS DISASSEMBLY............................................................................91
3.6.11. HEAD DISASSEMBLY..........................................................................................................................92
3.6.12. VALVES DISASSEMBLY......................................................................................................................93
3.6.13. CYLINDER AND PISTON DISASSEMBLY...........................................................................................94
3.6.14. CHECKING CON-ROD SMALL END....................................................................................................95
3.6.15. GUDGEON PIN DIAMETER .................................................................................................................96
3.6.16. PISTON.................................................................................................................................................98
3.6.17. PISTON RINGS ....................................................................................................................................99
3.6.18. ASSEMBLING PISTON ......................................................................................................................100
3.6.19. CHECKING PISTON POSITION.........................................................................................................101
3.6.20. ASSEMBLING PISTON RINGS ..........................................................................................................102
3.6.21. ASSEMBLING THE CYLINDER .........................................................................................................103
3.6.22. CHECKING THE HEAD ......................................................................................................................104
3.6.23. CHECKING VALVES FOR WEAR......................................................................................................105
3.6.24. CHECKING VALVE SEATS FOR WEAR............................................................................................106
3.6.25. CHECKING VALVE SEALING ............................................................................................................108
3.6.26. CHECKING COLLETS AND SPRING PLATES..................................................................................109
3.6.27. ASSEMBLING VALVES......................................................................................................................110
3.6.28. CHECKING THE TIMING SYSTEM PARTS.......................................................................................111
3.6.29. CHECKING THE CAMSHAFT ............................................................................................................112
3.6.30. ASSEMBLING HEAD AND TIMING SYSTEM PARTS .......................................................................114
3.6.31. ASSEMBLING TIMING SYSTEM PARTS...........................................................................................115
3.6.32. ASSEMBLING THE THERMOSTAT...................................................................................................118
3.6.33. ASSEMBLING THE INDUCTION MANIFOLD ....................................................................................119
3.7. SECONDARY AIR........................................................................................................................................120
3.7.1. DESCRIPTION ...................................................................................................................................120
3.7.2. TROUBLESHOOTING........................................................................................................................122
ENGINE
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