
Inspecting the valve housings
- Check the width of the mark on the seat of valve
«
V
».
- Remove any carbon formation from the valve
guides.
- Measure the inside diameter of each valve guide.
- Take the measurement at three different heights
in the rocker arm push direction.
- If the width of the impression on the valve seat or
the diameter of the valve guide exceed the speci-
fied limits, replace the cylinder head.
Characteristic
Max. wear limit
1.6 mm
Valve seat wear Intake guide
limit accepted: 5.022
Valve seat wear Intake guide
Standard diameter: 5.000 ÷ 5.012 mm
Valve seat wear Exhaust guide
Accepted limit 5.022
Valve seat wear Exhaust guide
Standard diameter: 5.000 ÷ 5.012 mm
Inspecting the valves
- Measure the diameter of the valve stems in the
three positions indicated in the diagram.
- Calculate the clearance between valve and valve
guide.
- Check that there are no signs of wear on the sur-
face of contact with the articulated register termi-
nal.
- If the checks above give no failures, you can use
the same valves. For best sealing results, it is ad-
visable to grind the valves. Grind the valves gently
with a fine-grained lapping compound. During the
grinding, keep the cylinder head with the valve ax-
es in a horizontal position. This will prevent the
XEVO 125 Euro 3
Engine
ENG - 39
Содержание XEVO 125 Euro 3
Страница 4: ......
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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 ...