WORKSHOP MANUAL - lombardini service
WORKSHOP MANUAL - lombardini service
WORKSHOP MANUAL - lombardini service
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Disassembly / Reassembly<br />
4<br />
Journal and connecting rod pins diameters<br />
A<br />
Dimensions (mm):<br />
Ref. Tolerance Limit value<br />
A ( mm)<br />
50,981÷51,000<br />
50,900<br />
B<br />
B ( mm)<br />
39,984÷40.000<br />
39,900<br />
121<br />
C<br />
Main bearings and connecting rod big ends diameters<br />
Dimensions (mm):<br />
Ref.<br />
Tolerance<br />
Limit value<br />
C ( mm)<br />
51,023÷51,059<br />
51,098<br />
D ( mm)<br />
40,021÷40,050<br />
40,100<br />
122<br />
D<br />
The dimensions given refer to tightened bearings.<br />
For tightening torque see figures 97.<br />
Clearances between the bearings and corresponding pins<br />
A<br />
See figures. 110 ÷ 111.<br />
Dimensions (mm):<br />
Ref. Clearance Limit value<br />
C -A ( mm)<br />
0,023÷0,078<br />
0,200<br />
D -B ( mm)<br />
0,021÷0,066<br />
0,130<br />
123<br />
B<br />
Nota: Both for crankshaft bearings and for connecting rod big end<br />
bearings internal diameter are undersized by 0.25 and 0.50<br />
mm.<br />
FOCS Workshop Manual_cod. 1.5302.858_1° ed_ rev. 00<br />
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