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).
Summary of faults and modifications related to oil plugs, engine valves, fans, and main bearings.
| Identifier | ExFiles\Box 146\2\ scan0021 | |
| Date | 31th December 1936 guessed | |
| -9- 31. FITTED NEW TYPE OIL DRAIN PLUG TO CRANKCASE. December quarter C.C. C.P. I I Previous quarter C.C. C.P. 3 3 ---------- Six months 4 Standard modification job as per D.S. Hd.{Mr Hayward/Mr Huddy}293. B.20I.CW - 26530 kms. 32. ENGINE VALVES BURNT OUT December quarter C.C. C.P. Previous quarter C.C. I I C.P. ---------- Six months I 33. RE-BALANCED FAN December quarter C.C. C.P. Previous quarter C.C. C.P. I I ---------- Six months I 34. MAIN BEARINGS EXCESSIVE WEAR OR BEARINGS IN A CRACKED & UNRELIABLE CONDITION December quarter C.C. I C.P. 4 5 Previous quarter C.C. 3 C.P. 3 6 ---------- Six months II 4 1/4 Litre B. 60.GA - 23065 kms.- Roughness & period in engine. At request of the Experimental Dept. & for Experimental purposes, we fitted a set of standard white metal main bearings & carried out a I0000 test. Full report sent to Rm.{William Robotham - Chief Engineer} 3 1/2 Litre B.II6.BL - 38810 kms.- All intermediate bearings in very poor condition, chunks of metal missing & cracked. Fitted a set of W/M main bearings, owner paid for an R.20. B.I05.CW - 36000 miles - Mains especially the intermediate's in very poor condition. Fitted new W/M.{Mr Moon / Mr Moore} mains. B. 6.BN{W.O. Bentley / Mr Barrington} - 44700 kms.- Ditto as above. Owing paying for R.20 etc. B. 28.DG - 37630 kms.- ditto as above. Please refer to detailed remarks on last quarter lists. | ||