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).
Confirming lubrication intervals for various vehicle components.
| Identifier | ExFiles\Box 51\3\ Scan159 | |
| Date | 1st July 1929 | |
| X44600 To BY {R.W. Bailey - Chief Engineer} /NW. {N. Walker - Patents} from Hs {Lord Ernest Hives - Chair} /Gy. Hs {Lord Ernest Hives - Chair} /Gy1/LC1.7.29. V3806 This is to confirm that the following units should be lubricated accordingly : Front axle every 500 miles. Rear axle every 1000 miles. Mechanics Joints examined at 5000 miles. Water pump every 1000 miles, For other units approximately every 1000 miles. The clutch trunnion and ball race, and prop: shaft sliding joint, we are now experimenting with and will shortly advise you of our recommendations. Hs {Lord Ernest Hives - Chair} /F.Gaye. | ||