Inspecting the wrist pin
- Check the wrist pin external diameter using a mi-
crometer
Characteristic
Wrist pin: standard diameter
12 +0.005 +0.001 mm
Inspecting the piston
- Measure the bearings on the piston using a bore
meter
- Calculate the piston-pin coupling clearance.
Characteristic
Wrist pin housing: standard diameter
12 +0.007 +0.012
Wrist pin housing: standard clearance
0.002 ÷ 0.011 mm
- Measure the outer diameter of the piston, per-
pendicular to the pin axis.
- Take the measurement in the position shown in
the figure
To classify the cylinder-piston fitting, check the ap-
propriate table
See also
Cylinder - piston assy.
Engine
Vespa LX 50
ENG - 80
Summary of Contents for LX 50
Page 1: ...WORKSHOP MANUAL 633416 Vespa LX 50 ...
Page 4: ......
Page 6: ...INDEX OF TOPICS CHARACTERISTICS CHAR ...
Page 16: ...INDEX OF TOPICS TOOLING TOOL ...
Page 27: ...INDEX OF TOPICS MAINTENANCE MAIN ...
Page 38: ...INDEX OF TOPICS TROUBLESHOOTING TROUBL ...
Page 44: ...INDEX OF TOPICS ELECTRICAL SYSTEM ELE SYS ...
Page 58: ...INDEX OF TOPICS ENGINE FROM VEHICLE ENG VE ...
Page 60: ...INDEX OF TOPICS ENGINE ENG ...
Page 91: ...INDEX OF TOPICS SUSPENSIONS SUSP ...
Page 107: ...INDEX OF TOPICS BRAKING SYSTEM BRAK SYS ...
Page 113: ...INDEX OF TOPICS CHASSIS CHAS ...
Page 118: ...INDEX OF TOPICS PRE DELIVERY PRE DE ...
Page 122: ...INDEX OF TOPICS TIME TIME ...