International Standard
ISO 1204:1990
Reciprocating internal combustion engines — Designation of the direction of rotation and of cylinders and valves in cylinder heads, and definition of right-hand and left-hand in-line engines and locations on an engine
Reference number
ISO 1204:1990
Edition 2
International Standard
Read sample
ISO 1204:1990
Published (Edition 2, 1990)
This standard was last reviewed and confirmed in 2020. Therefore this version remains current.

ISO 1204:1990

ISO 1204:1990
CHF 63
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This document specifies methods of designating the direction of rotation and the cylinders of reciprocating internal combustion engines and of designating a specific valve in a cylinder head when the cylinder head is mounted on the engine or dismantled. It defines right-hand and left-hand in-line reciprocating internal combustion engines and locations on a reciprocating internal combustion engine so that the position of equipment on the engine can be described. It applies to reciprocating internal combustion engines for land, rail-traction and marine use, excluding engines used to propel agricultural tractors, road vehicles and aircraft. It may by applied to engines used to propel road-construction and earth-moving machines, industrial trucks and for other applications where no suitable International Standard for these engines exists. 

General information

  •  : Published
     : 1990-12
    : International Standard confirmed [90.93]
  •  : 2
     : 11
  • ISO/TC 70
  • RSS updates

Life cycle

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