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From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Procedure for cleaning sticky oil from exhaust valves and its inclusion in the Instruction Book.

Identifier  ExFiles\Box 31\3\  Scan005
Date  30th December 1914 guessed
  
To. J.{Mr Johnson W.M.} from R.{Sir Henry Royce}

2. COPY R16/IB61114.

valve so that it runs round the head and down the stem, and washes out the sticky oil. This operation need only be done to the exhaust valves, as I believe they are the only ones that get wrong. After this operation has been performed, the engine will be all right for a considerable period.

Will Mr Hives, Mr Platford, and Mr Haldenby confirm this. I do not think we mention it in the Instruction Book, but I think it would be worth while to do so, under the heading of "Difficulties in starting the engine", with other notes.

R.{Sir Henry Royce}

[Watermark: DICKINSON BOND]
  
  


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