Perkins 900 Series Workshop Manual page 84

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Caution: Turbocharged (CR) engines have a hard metal insert to reduce wear of the groove (C1) and a wedge
shaped top ring (C2). Ensure that the full engine number is used to order new pistons or rings.
5 Fit the top ring, the manufacturers symbol or the word 'TOP', must be towards the top of the piston. A new
top ring has a red identification mark that must be on the left of the ring gap when the ring is fitted and the
piston is upright. The top ring has a small curve on the outer face (C2/D1).
6 Ensure that the ring gaps are 120° apart.
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This document has been printed from SPI². Not for Resale
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Workshop Manual, TPD 1345E, issue 3
900 Series
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