21-2 Cylinder Block
Cylinder Block, Inspection
Upper block plane
Check
that
the upper engine block plane does not have
any cracks or other damage. Also check that it is not
warped (in the same way as for the cylinder head).
For max. warpage, refer to Group 21:
Engine page 14. Change the engine block if it is out-
side the tolerances.
Cylinder bore
Check that the cylinder bores are not scored or dam-
aged in other ways.
Measure the cylinder bores at the piston ring top and
bottom dead center positions (approx. 10 mm (0.39")
and 100 mm (3.94") below the engine block plane) and
also in between. Measurement should be done with an
internal dial gauge both longitudinally and transversely
to the engine block (A and B).
Concerning max. permitted cylinder diameter, refer to
“Wear tolerances” in Group 21: Engine page 14.
21-2 Cylinder Block
64 47701798 05-2013 © AB VOLVO PENTA
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