Cross-sectional diagrams illustrating the front axle pivot lubrication and overflow pipe.
| Identifier | ExFiles\Box 26\5\ Scan199 | |
| Date | 15th September 1928 guessed | |
| 1 in 200 Taper #6 Drip Plug Key E18705 Mud Shield must be clipped by shoulder of Pivot Pin 1 Standing Level of Oil. Front Axle Lubrication Overflow Pipe (Axle Pivot) 330-6 M.C.H. A J K H L G M III | ||
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).