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Inspecting the valve sealings
- Insert the valves into the cylinder head.
- Alternatively check the intake and exhaust
valves.
- The test is carried out by filling the manifold with
petrol and checking that the head does not ooze
through the valves when these are just pressed
with the fingers.
Inspecting the valve housings
- Check the width of the imprint on the valve
seat«
V
» wear limit max. 1.6 mm.
- 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
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
Engine
Vespa GTV 250 i.e.
ENG - 40
Содержание 633844 IT
Страница 4: ......
Страница 6: ......
Страница 7: ...INDEX OF TOPICS CHARACTERISTICS CHAR ...
Страница 21: ...INDEX OF TOPICS TOOLING TOOL ...
Страница 34: ...Tooling Vespa GTV 250 i e TOOL 14 ...
Страница 35: ...INDEX OF TOPICS MAINTENANCE MAIN ...
Страница 48: ...Maintenance Vespa GTV 250 i e MAIN 14 ...
Страница 49: ...INDEX OF TOPICS TROUBLESHOOTING TROUBL ...
Страница 53: ...INDEX OF TOPICS ELECTRICAL SYSTEM ELE SYS ...
Страница 58: ...1 Saddle opening switch 2 Wirings 3 Insert in clamp Electrical system Vespa GTV 250 i e ELE SYS 6 ...
Страница 86: ...Electrical system Vespa GTV 250 i e ELE SYS 34 ...
Страница 87: ...INDEX OF TOPICS ENGINE FROM VEHICLE ENG VE ...
Страница 94: ...Engine from vehicle Vespa GTV 250 i e ENG VE 8 ...
Страница 95: ...INDEX OF TOPICS ENGINE ENG ...
Страница 152: ...Conceptual diagrams LUBRICATION CIRCUIT Engine Vespa GTV 250 i e ENG 58 ...
Страница 153: ...Vespa GTV 250 i e Engine ENG 59 ...
Страница 161: ...INDEX OF TOPICS INJECTION INJEC ...
Страница 178: ... REMOTE CONTROLS CONTROL UNIT FUSES ETC Injection Vespa GTV 250 i e INJEC 18 ...
Страница 182: ...Remove the filter from the pump support Injection Vespa GTV 250 i e INJEC 22 ...
Страница 194: ...Injection Vespa GTV 250 i e INJEC 34 ...
Страница 203: ...SIGNAL CONTROL Vespa GTV 250 i e Injection INJEC 43 ...
Страница 206: ...Injection Vespa GTV 250 i e INJEC 46 ...
Страница 207: ...INDEX OF TOPICS SUSPENSIONS SUSP ...
Страница 228: ...Suspensions Vespa GTV 250 i e SUSP 22 ...
Страница 229: ...INDEX OF TOPICS BRAKING SYSTEM BRAK SYS ...
Страница 245: ...INDEX OF TOPICS COOLING SYSTEM COOL SYS ...
Страница 248: ...Cooling system Vespa GTV 250 i e COOL SYS 4 ...
Страница 249: ...INDEX OF TOPICS CHASSIS CHAS ...
Страница 262: ...Chassis Vespa GTV 250 i e CHAS 14 ...
Страница 263: ...INDEX OF TOPICS PRE DELIVERY PRE DE ...
Страница 267: ...INDEX OF TOPICS TIME TIME ...
Страница 269: ...Crankshaft CRANKSHAFT Code Action Duration 1 001117 Crankshaft Replacement Vespa GTV 250 i e Time TIME 3 ...
Страница 299: ...Rear rack LUGGAGE RACK Code Action Duration 1 004008 Luggage rack Replacement Vespa GTV 250 i e Time TIME 33 ...
Страница 308: ...Stickers TRANSFERS Code Action Duration 1 004159 Plates Stickers Replace ment Time Vespa GTV 250 i e TIME 42 ...