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).
Procedure for removing the wheelcase with a Diamond Mounting P.2.
| Identifier | WestWitteringFiles\W\September1931-November1931\ Scan086 | |
| Date | 7th November 1931 | |
| To E.{Mr Elliott - Chief Engineer} from Hs{Lord Ernest Hives - Chair}/Les.{Ivan A. Leslie} c.c. Ey. c.c. Wor.{Arthur Wormald - General Works Manager} ORIGINAL Hs{Lord Ernest Hives - Chair}/Les.2/AM.7.11.31. X5005 X7005 TO REMOVE THE WHEELCASE WITH DIAMOND MOUNTING P.2. As it is often necessary to remove the wheelcase the operation should be made as simple as possible. we presume that the following procedure is intended :- Having removed the undershield and radiator the new cross member is removed. This is effected by 8 bolts through the flanges, 2 bolts through the centre of the engine dampers and 2 bolts holding the centre mounting arm to the brackets on the wheelcase. The cross member is dropped straight down bringing with it the centre engine mounting arm and the centre plates of the engine dampers. Then the fan pulley and wheelcase nuts are removed in the usual way and we presume it is intended for the wheelcase to be drawn forward and off. This is possible on scheme LeC.2911 and on scheme LeC.2931 using the small area engine dampers, but with LeC.2931 using 50% larger engine dampers to LeC.2934, the outer plates of the engine dampers come against the remaining flanges of the new cross member. With LeC.2931 the centre plates of the engine dampers have been attached to the cross member at 2 points and the dividing flanges are brought closer together. We imagine the latter was done to utilize the forged flange for a boss for the second location of the engine damper centre plates. In consequence, in order to remove the wheelcase it is necessary to remove the outer plates of the engine dampers from the wheelcase which causes considerable extra work which should be avoided. The scheme which was tested in France was LeC.2911 with 50% larger area dampers. with this scheme the wheelcase could be removed without dismantling the outer plates of the engine dampers. The chief difficulty appears to have arisen since we brought the flanged joints closer together. The fact that we cannot check the load on the dampers is unsatisfactory. Hs{Lord Ernest Hives - Chair}/Les.{Ivan A. Leslie} | ||