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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).
Investigation into oil leaks on Phantom III front brakes and the proposed solution.

Identifier  ExFiles\Box 92\4\  scan0187
Date  25th June 1936
  
x306
Martindale
Your note answers this

H
De
Rm{William Robotham - Chief Engineer}
Br
Sct

from H.{Arthur M. Hanbury - Head Complaints}

MX{John H Maddocks - Chief Proving Officer}6/T25.6.36 Rm{William Robotham - Chief Engineer}

PHANTOM III FRONT BRAKES

We have had three cases of oil getting on to front brake friction surfaces on chassis on test. Investigation showed that the oil can get in at two points at the inner carrier plate G83397/8 -

(1) Where the plate fits round the stub axle due to excess of oil from top of pivot.

(2) Oil drips from the lower end of pivot on to the joint of carrier plate G83397/8 and outer carrier plate G83401/2.

We are making a seal at these two points on chassis on test and chassis now being built, by the use of Heldite jointing material.
  
  


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