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Settings and Data-continued
Page B2
Details of Industrial engine ratings caD be obtained upon request, from
the plant manufacturers or engine manufacturers.
In the case of queries on other types of application, apply to Service
Division quoting the engine number.
De-rating for Altitude : Where engines are called upon to operate in
rarefied atmospheres occasioned by altitude, such engines should be
de-rated. For details regarding engine de-rating for altitude apply to
Service Division, Perkins Engines Ltd., Peterborough, or to those
Overseas Companies listed on Page 11.
IMPORTANT NOTE : ALL Screw Threads used on the L4 engine,
except on proprietary equipm~nt and the crankshaft, are Unified Series
and American Pipe Series.
The crankshaft and starting dog nut are threaded 1 inch American
National Fine 14 T.P.I.
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