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 report of vehicle faults, including water leaks and hydraulic issues, categorized by model and time period with corresponding remedies.
| Identifier | ExFiles\Box 130\1\ scan0031 | |
| Date | 31th March 1933 guessed | |
| - 8 - 20 HP. 25 HP. PH.I. PH.II. TOTAL. GRAND TOTAL. REMARKS. WATER LEAKS FROM CYLINDER. March quarter. C.C. - 1 3 1 5) W.P. - - 5 53 58) 63 Ph.I and Ph.II definitely cured by fitting nickel plated copper tubes in place of original aluminium tubes. Also bronze core hole plugs instead of aluminium. All cars being attended to. Depot Sheet No. 221. Previous quarter. C.C. - - 3 3 6) W.P. - - 14 105 119) 125 Six Months. - 1 25 162 188 188 TOTAL HYDRAULIC COMPLAINTS. March quarter. C.C. 11 30 1 36 78) W.P. 1 7 - 21 29) 107 Any split piston dampers amongst these Previous quarter. C.C. 8 32 4 53 97) W.P. - 7 2 22 31) 128 Six Months. 20 76 7 132 235 235 HYDRAULIC KNOCKS. March quarter. C.C. 10 28 1 21 60) W.P. 1 5 - 7 13) 73 Knocks on existing dampers are being satisfactorily dealt with by modifying the replenishing ball valves and fitting oil feed to intermediate levers as per Depot Sheet No.225. The split piston type now being produced appears satisfactory in service. Previous quarter. C.C. 7 29 3 33 72) W.P. - 7 2 6 15) 87 Six Months. 18 69 6 67 160 160 HYDRAULIC LEAKS. March quarter. C.C. - 2 - 5 7) W.P. - - - 2 2) 9 Previous quarter. C.C. 1 3 1 5 10) W.P. - - - 1 1) 11 Six Months. 1 7 1 11 20 20 | ||