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).
Works instruction regarding the modification of rear road spring bolts for lubrication.
| Identifier | ExFiles\Box 10\4\ 04-page16 | |
| Date | 20th September 1922 | |
| W.I. No. 49 REAR ROAD SPRING BOLTS. This house having had under review the question of the lubrication of these bolts, has decided that all cars despatched from here on and after the 1st October next will have the bolts mentioned above treated in the following way. The bolts will be drilled, tapped and fitted with screw down greasers of the Stauffer type. This modification will be found useful as it renders it possible to lubricate the bolts very easily. | ||