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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).
Modification to the dirt covers on the Phantom III hydraulic tappets.

Identifier  ExFiles\Box 96\2\  scan0108
Date  5th March 1936
  
BT.{Capt. J. S. Burt - Engineer}
c. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} Hs{Lord Ernest Hives - Chair}/Swdl.{Len H. Swindell} RMC.
Rm{William Robotham - Chief Engineer} x357
E/JNR.{Charles L. Jenner}1/HP.5.3.36.

Phantom III Hydraulic Tappets.

Hs{Lord Ernest Hives - Chair}/Swd1.15/KW.12.2.36.

The suggestion made by Hs{Lord Ernest Hives - Chair}/Swdl{Len H. Swindell} to reverse the dirt covers on the top of the plunger casings ino order to be able to operate the internal valve when running, and releasing the air after building up dry, is satisfactory, but the collar on the plate should be reduced by surface grinding it away, so that it is only .010 proud of the plate.

Will you please instruct all the dirt covers to be altered and erected with the collar on the underside.

.010

E/JNR.{Charles L. Jenner} C.f.
  
  


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