Rolls-Royce Archives
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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).
Chart detailing various failure types for 237 returned MER II, III, IV, and X engines.

Identifier  ExFiles\Box 141\2\  scan0232
Date  31th May 1940
  
MER II III IV AND X ENGINES RETURNED FOR SERVICE
237 ENGINES
MAR. APR. MAY. 1940.
ENGINE FAILURES
CRANKSHAFT FRACTURE
DUE TO CENTRE MAIN BEARING FAILURE
AVER HRS 120
(2)
CON: ROD
TOTAL FAILURE
AVER HRS 104
(15)
SUPERCHARGER
ROTOR BURST
AVER HRS 32
(5)
GENERATOR
SEIZED
AVER HRS 180
(5)
PISTON
FAILURE DUE TO PREIGNITION
AVER HRS 35
(5)
MAIN BEARING
FAILURE
AVER HRS 60
(3)
DOWEL PEG SHEARED
CRANKSHAFT DRIVE, TO WHEELCASE CAUSING PARTIAL FAILURE N°7 BEARING.
AVER HRS 178
(2)
ENGINE FAILURES CONTINUED
LOCKPLATE FAILURE
OF CAMSHAFT BEVEL DRIVING GEAR
AVER HRS 141
(2)
Y-Axis Scale (appears twice): 10, 20, 30, 40, 50, 60, 70, 80, 90, 100%
  
  


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