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N.B.
THE MAIN BEARINGS ARE NOT GRINDABLE
Specific tooling
020074Y
Support base for checking crankshaft
alignment
Characteristic
Off-line maximum admitted
A
= 0.15 mm
B
= 0.01 mm
C
= 0.01 mm
D
= 0.10 mm
Inspecting the crankcase halves
- Before proceeding to check the crankcase
halves, thoroughly clean the 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.
Engine
Vespa GTV 250 i.e.
ENG - 52
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 ...