WORKSHOP MANUAL - lombardini service
WORKSHOP MANUAL - lombardini service
WORKSHOP MANUAL - lombardini service
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Disassembly / Reassembly<br />
4<br />
Piston, weight<br />
Weigh pistons when replacing them in order to avoid unbalance.<br />
The difference in weight should not exceed 4 g.<br />
86<br />
Piston rings - End gaps (mm)<br />
Place piston rings squarely into the unworn part of the lower cylinder<br />
and measure the end gap A.<br />
Piston ring<br />
A<br />
limit value<br />
1°<br />
0,25÷0,45<br />
2°<br />
0,25÷0.45<br />
1.0<br />
3°<br />
0,20÷0,45<br />
87<br />
Piston ring, Clearance between grooves (mm)<br />
A 0,090÷0,125<br />
B 0.050÷0,085<br />
C 0,040÷0,075<br />
88<br />
89<br />
Piston ring, mounting order<br />
A = 1° ring (internal tapered and torsional)<br />
B = 2° ring (internal tapered and torsional)<br />
C = 3° Oil control ring<br />
D = Chrome-plated area<br />
E = Chrome-plated area<br />
Note: When there is writing on the surface of a piston ring, mount<br />
that surface with face upward.<br />
90<br />
FOCS Workshop Manual_cod. 1.5302.858_1° ed_ rev. 00<br />
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