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).
List of Operations for Gearbox components, detailing parts, quantities, and labor times.
| Identifier | ExFiles\Box 148\2\ scan0240 | |
| Date | 1st September 1939 guessed | |
| SECTION 9A. GEARBOX L.O.P.'s GB. 4947. Piece No. | Description | No. off | Hrs.Mins. --- | --- | --- | --- GB.4801 | Gearbox. | 1 | 37 46 GB.4141 | Pivot Pin-Levers. | 2 | 36 GB.4172 | Pivot Pin-Act.Levers 3rd & 4th | 1 | 38½ GB.4142 | Retaining Plate-Pivot Pin. | 2 | 15 GB.4143 | Blanking Plate. | 1 | 1½ GB.4169 | Joint-Blanking Plate. | 1 | 6½ GB.4862 | Pin-Servo Sealing Washer. | 1 | B.O. GB.4437 | Selector Shaft 3rd & 4th. | 2 | 23¾ GB.4438 | Selector Shaft Reverse | 1 | 44¾ GB.4439 | Selector Shaft 1st & 2nd. | 1 | 49¾ GB.4342 | Selector Jaw. | 1 | 1 10¼ GB.4854 | Oper: Jaw. | 2 | 2 40 GB.3451 | Locating Screw. | 1 | 1 38 GB.4341 | Lock Plate. | 4 | 5¾ D.2123 | Set Screw-Selector Jaw. | 4 | 1¾ GB.5017 | Plunger Spring-Reverse. | 3 | 4¼ GB.4338 | Plunger Spring 1st,2nd,3rd.4th. | 1 | B.O. GB.4436 | Cover Selector Shafts. | 2 | B.O. GB.3449 | ~~Cover~~ Cork Washer. | 1 | B.O. KB. 350 | Studs-Gearbox Plates .250 | 1 | B.O. KB.3824 | Studs Covers .250 | 6 | 9¾ KB. 351 | Stud-Speedo Hsg. .250 | 32 | 32 KB. 353 | Stud-Cover .250 | 3 | 4¾ KB. 355 | Stud- .250 | 11 | 44¼ KB. 401 | Stud .312 Gearbox Support. | 7 | 10½ KB. 425 | Stud .312 | 4 | 7½ GB.4934 | 1st Motion Shaft. | 2 | 3½ Hoff:345 | Ball Bearing-Front End. | 1 | 10 53¼ GB.4838 | Washer 1st M.{Mr Moon / Mr Moore} Shaft. | 1 | B.O. GB.4840 | Lockwasher 1st. M.{Mr Moon / Mr Moore} Shaft. | 1 | 17 KB.3537 | L.H. Nut 1st M.Shaft. | 1 | B.O. GB.4880 | 3rd Motion Shaft. | 1 | 15½ GB.4977 | 1st Speed Driven Gear. | 1 | 7 14½ GB.4991 | 2nd Speed Driven Gear. | 1 | 13 38½ GB.4841 | Bush 2nd Gear. | 1 | 9 49½ GB.4193 | 3rd Speed Driven Gear. | 1 | 1 23½ GB.4841 | Bush 3rd Gear. | 1 | 9 5½ GB.4846 | 3rd & 4th Sliding Piece. | 1 | 1 23½ GB.4879 | Coupling Flange. | 1 | 7 52 GB.4876 | Sleeve-3rd Speed Driver. | 1 | 2 27 Hoff: 145 | Ball Bearing-Centre | 1 | 2 09 Hoff:335 | Ball Bearing-Rear End. | 1 | B.O. GB.4873 | Servo Drive-Worm. | 1 | B.O. GB.4851 | Sleeve 3rd M.Shaft. | 1 | 4 19½ GB.4857 | Sleeve 2nd Speed Gear. | 1 | 3 23½ GB.3955 | Thrust Washer. | 1 | 1 15 GB.4992 | Outer Cone 2nd Speed Gear. | 1 | 15½ | | | 2 12½ cont'd.... | ||