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The table shows the cylinder, the piston sizes and the factory nominal clearance for new
components.
Maximum clearance refers to worn components.
Selection
Cylinder ø*
A
79,000-79,010
B
79,010-79,020
C
79,020-79,030
* at 20 °C
Determine the maximum clearance, if equal to or greater than the indicated value replace
the piston and/or cylinder.
Check the piston and cylinder for signs of seizure, otherwise replace them. For routine
maintenance, follow the table.
Cosmos 300 – Maintenance manual – V2
Piston ø*
(mm)
78,955-78,965
78,965-78,975
78,975-78,985
Factory nominal
(mm)
clearance* (mm)
0,035-0,055
Maximum
clearance* (mm)
0,1
172
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