As > built configurations 49 OiI overflow holes from cylinder crankcase to cylinder head 50 Oil return flow openings or oil return flow holes from cylinder head to cylinder crankcase x Direction of travel 51 Coolant short > circuit channel from cylinder head to cylinder crankcase 52 Coolant overflow holes from cylinder crankcase to cylinder head W01.30 > 1126 > 76 x Direction of travel W01.30 > 1127 > 76 16 – This printout will not be recorded by the update service. Status: 09 / 2011 –