Inspecting the crankcase halves
- Before proceeding to check the crankcase
halves, thoroughly clean all surfaces and oil ducts.
- On the transmission-side crankcase half, take
particular care when handling the oil pump com-
partment and the oil ducts, the by-pass duct, the
main bushings and the cooling jet on the trans-
mission side (see diagram).
- Take particular care, also, that there are no signs
wear in the oil by-pass valve housing (see Chapter
Lubrication), as this could prevent a good seal in
the valve, which regulates the oil pressure.
- On the flywheel side crankcase half, take partic-
ular care cleaning the oil ducts for the main bush-
ings, the oil duct for the jet that lubricates the
cylinder head and the oil drainage duct at the fly-
wheel side oil seal.
- Inspect the coupling surfaces on the crankcase
halves for scratches or deformation, taking partic-
ular care with the cylinder/crankcase surfaces and
the crankcase halves surfaces.
- Defects in the crankcase coupling gasket be-
tween the crankcase halves or the mating surfaces
shown in the diagram, could cause a drop in the
oil pressure lubricating the main bearings and con-
nection rod.
- Check the main bearing seats that limit axial
clearance in the crankshaft show no signs of wear.
The dimension between these seats is measured
by way of the procedure described previously for
measuring the crankshaft axial clearance and di-
mensions.
N.B.
THE JET IS FED THROUGH THE MAIN BUSH-
INGS. PROPER OPERATION OF THIS COMPO-
NENT IMPROVES THE PISTON TOP COOLING.
CLOGGING HAS EFFECTS THAT ARE DIFFI-
CULT TO DETECT (PISTON TEMPERATURE
INCREASE). FAILURE OR LEAK CAN CONSID-
ERABLY DECREASE THE MAIN BUSHING
Engine
XEVO 125 Euro 3
ENG - 52
Содержание XEVO 125 Euro 3
Страница 4: ......
Страница 6: ......
Страница 7: ...INDEX OF TOPICS CHARACTERISTICS CHAR ...
Страница 22: ...Characteristics XEVO 125 Euro 3 CHAR 16 ...
Страница 23: ...INDEX OF TOPICS TOOLING TOOL ...
Страница 35: ...INDEX OF TOPICS MAINTENANCE MAIN ...
Страница 51: ...INDEX OF TOPICS TROUBLESHOOTING TROUBL ...
Страница 58: ...Troubleshooting XEVO 125 Euro 3 TROUBL 8 ...
Страница 59: ...INDEX OF TOPICS ELECTRICAL SYSTEM ELE SYS ...
Страница 87: ...INDEX OF TOPICS ENGINE FROM VEHICLE ENG VE ...
Страница 93: ...INDEX OF TOPICS ENGINE ENG ...
Страница 149: ...XEVO 125 Euro 3 Engine ENG 57 ...
Страница 174: ...Engine XEVO 125 Euro 3 ENG 82 ...
Страница 175: ...INDEX OF TOPICS SUSPENSIONS SUSP ...
Страница 198: ...Suspensions XEVO 125 Euro 3 SUSP 24 ...
Страница 199: ...INDEX OF TOPICS BRAKING SYSTEM BRAK SYS ...
Страница 211: ...INDEX OF TOPICS COOLING SYSTEM COOL SYS ...
Страница 215: ...Locking torques N m Thermostat cover screws 3 4 XEVO 125 Euro 3 Cooling system COOL SYS 5 ...
Страница 216: ...Cooling system XEVO 125 Euro 3 COOL SYS 6 ...
Страница 217: ...INDEX OF TOPICS CHASSIS CHAS ...
Страница 235: ...INDEX OF TOPICS PRE DELIVERY PRE DE ...
Страница 239: ...INDEX OF TOPICS TIME TIME ...
Страница 242: ...Crankshaft CRANKSHAFT Code Action Duration 1 001117 Crankshaft Replacement Time XEVO 125 Euro 3 TIME 4 ...
Страница 261: ...Legshield spoiler FRONT SHIELD Code Action Duration 1 004020 Headlight frame Replace ment XEVO 125 Euro 3 Time TIME 23 ...
Страница 271: ...Seat SADDLE Code Action Duration 1 004003 Saddle Replacement XEVO 125 Euro 3 Time TIME 33 ...
Страница 279: ...Electric devices XEVO 125 Euro 3 Time TIME 41 ...
Страница 288: ...Windscreen WINDSHIELD Code Action Duration 1 004101 Windshield Replacement Time XEVO 125 Euro 3 TIME 50 ...
Страница 289: ...Stickers TRANSFERS Code Action Duration 1 004159 Plates Stickers Replace ment XEVO 125 Euro 3 Time TIME 51 ...