Crankcase - crankshaft
Splitting the crankcase halves
- Before opening the crankcase, it is advisable to
check the axial clearance of the crankshaft. To do
this, use a plate and a support with appropriate tool
dial gauge.
- Upper clearances are an indication of wear on
the surfaces of the crankshaft casing support.
- Remove the 10 crankshaft coupling screws.
- Separate the crankcase while keeping the crank-
shaft in one of the two halves of the crankcase.
- Remove the crankshaft.
- Remove the half crankcase coupling gasket.
- Remove the two screws and the internal cover
shown in the diagram.
- Remove the oil guard on the flywheel side.
- Remove the oil filter fitting shown in the diagram.
- Check the axial clearance on the connecting rod.
- Check the radial clearance on the connecting rod.
-Check the surfaces that limit the axial free-play
are not scored and measure the width of the crank-
shaft between these surfaces, as shown in the
diagram.
- If the axial clearance between crankshaft and
crankcase is exceeding and the crankshaft does
not have any defect, the problem must be due to
either excessive wear or wrong machining on the
crankcase.
- Check the diameters of both the bearings of the
crankshaft in accordance with the axes and surfa-
ces shown in the figure. The half-shafts are clas-
sified in two categories Cat. 1 and Cat. 2 as shown
the chart below.
CAUTION
THE CRANKSHAFT CAN BE REUSED WHEN THE WIDTH
IS WITHIN THE STANDARD VALUES AND THE SURFACES
SHOW NO SIGNS OF SCORING.
Engine
Vespa GTS Super 300 ie (2008)
ENG - 164
Summary of Contents for GTS Super 300 ie 2008
Page 1: ...MANUALE STAZIONE DI SERVIZIO Vespa GTS Super 300 ie 2008 ...
Page 4: ......
Page 6: ...INDEX OF TOPICS CHARACTERISTICS CHAR ...
Page 32: ...INDEX OF TOPICS TOOLING TOOL ...
Page 44: ...INDEX OF TOPICS MAINTENANCE MAIN ...
Page 56: ...INDEX OF TOPICS TROUBLESHOOTING TROUBL ...
Page 60: ...INDEX OF TOPICS ELECTRICAL SYSTEM ELE SYS ...
Page 115: ...INDEX OF TOPICS ENGINE FROM VEHICLE ENG VE ...
Page 123: ...INDEX OF TOPICS ENGINE ENG ...
Page 170: ...Engine Vespa GTS Super 300 ie 2008 ENG 170 ...
Page 178: ...INDEX OF TOPICS INJECTION INJEC ...
Page 179: ...Vespa GTS Super 300 ie 2008 Injection INJEC 179 ...
Page 205: ...Components location Vespa GTS Super 300 ie 2008 Injection INJEC 205 ...
Page 215: ...INDEX OF TOPICS SUSPENSIONS SUSP ...
Page 239: ...INDEX OF TOPICS BRAKING SYSTEM BRAK SYS ...
Page 254: ...INDEX OF TOPICS COOLING SYSTEM COOL SYS ...
Page 255: ...Circuit diagram Vespa GTS Super 300 ie 2008 Cooling system COOL SYS 255 ...
Page 256: ...Cooling system Vespa GTS Super 300 ie 2008 COOL SYS 256 ...
Page 260: ...INDEX OF TOPICS CHASSIS CHAS ...
Page 272: ...INDEX OF TOPICS PRE DELIVERY PRE DE ...
Page 276: ...INDEX OF TOPICS TIME TIME ...