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).
Standardising the gearbox oil level and the procedure for checking it to minimise leaks.
| Identifier | ExFiles\Box 66\4\ scan0234 | |
| Date | 16th February 1927 | |
| To Hm.{Capt. W. Hallam - Head Repairs} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} X8310 Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}5/LG16.2.27. GEARBOX. X8310 X5310 With reference to the oil level in the gearbox. In the hot weather in France we found it necessary to run with the oil level in the gearbox 8¼" below the top of the dip-stick, to minimise oil leaks. We suggest therefore that this distance should be standardised. In addition we think it would be advisable to point out that the level in the gearbox should be taken with the oil warm, otherwise misleading results are liable to be obtained. Also, unless the gearbox is warm and the oil which is put in is in the fluid state, it is almost impossible to hit on the correct level when replenishing. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||