How to Strip and Inspect a Volvo Engine Cylinder

VOLVO MD2010, MD2020, MD2030, MD2040 Engine Cylinder head stripping and inspection

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1. Remove the valves and valve springs. Press    the
   springs together with a valve spring    tensioner and
   remove the valve lock. Place the valves in    order in
   a marked valve rack. Remove the valve stem    seals.
2. Clean all parts. Observe special care with    the
   channels for oil and refrigerant.
3. Remove residual soot and impurities from    the cylinder head's sealing surfaces.
   Note: Do not use use steel brush to clean    the cylinder head screw threads or under    the s

4.The flatness tolerance for the cylinder head is max. 0.12
mm (.00472"). Check in six positions ("A-F" as per Fig.
15 and 16). Use a feeler gauge and a ruler the sides of
which are precision rubbed as per DIN 874/Normal.

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5.I f the flatness is not within the permissible tolerance the
cylinder head should be replaced. If leakage or blow
marks are confirmed it is not necessary to check for flatness since the cylinder head must be replaced.
Check the valve seats and that the pin screws are tight.
For replacement of the valve seats (inlet) see next
page.


VOLVO PROSIS Offline Parts Catalog &Repair Manuals 11.2022