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).
Service troubles with Bentley 3½ and 4¼ litre engines.
| Identifier | ExFiles\Box 100\3\ scan0180 | |
| Date | 2nd June 1937 | |
| To E.{Mr Elliott - Chief Engineer} from Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux} c. Rm.{William Robotham - Chief Engineer} c. Hs.{Lord Ernest Hives - Chair} c. Sg.{Arthur F. Sidgreaves - MD} GWH{George W. Hancock - Head Chateauroux} Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux}7/AP.2.6.37 BENTLEY - 3½ and 4¼ LITRE The following are service troubles met with during week-ending May 29th. (1) The flanged union for the main suction pipe on the bottom half of the engine, leaks oil due to the two bolts holding it on to the bottom half becoming loose. To tighten these bolts up, it is necessary to remove the side engine guards, and remove the lower half of the engine. The time taken to do this is 4½ - 5 hours and the actual job of tightening the nuts and make a fresh joint is ¼ hour. This is due to the nuts of these two bolts being on the inside of the lower half. OIL LEAK AT JOINT (2) The water pump fabric coupling. These couplings are being pulled out of shape and disintegrating. The rubber binding band should be made impervious to oil. (3) Oil Filter in lower half of engine. The nuts holding the filter in position occasionally get knocked off. To replace one of these studs necessitates the removal of the side engine guards and the lower half to undo the peened nut on the inside. The bosses should be made to take a one sized stud in place of the reduced stud at present used. (4) Shock damper governor control unit filler plug. A modification has been made changing the material from brass to mild steel to prevent damage of the hexagon head. It is still prone to damage due to being in an inaccessible position. A long box spanner has to be used and the short height of the hexagon allows the box spanner to roll over. It is suggested that the height of the hexagon be doubled to provide a better location for the box spanner. continued | ||