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).
Ford Bulletin page with assembly instructions for a B-type pump, detailing the diaphragm and body components.
| Identifier | ExFiles\Box 27a\2\ Scan228 | |
| Date | 18th July 1933 guessed | |
| FORD BULLETIN Page 39 [Fig. 48] Assemble tab on diaphragms in line with flats on pull rod. Tab. .90° When installing in pump body, turn diaphragm assembly 90° right or left to engage pull rod properly with link. Fig. 48. illustrations no difficulty should be experienced in re-assembling these pumps. To replace any parts in the B type pump lower body other than the diaphragm assembly, the rocker arm, link, and spring may be dismantled by removing the rocker arm and link shaft. This shaft (or pin,) B-9378 Fig. 49 being held in position by two B-9379 spring retainers. When re-assembling the pump link make sure that the loop through which the link shaft passes is in an upward position as shown in Fig. 49. Upper and Lower Body Assembly Place the upper and lower pump bodies together in the correct position, insert the securing screws into the securing holes, making sure that they pass through the holes in the four diaphragm layers correctly, and that each screw has a spring washer under its head, and tighten slightly so that a light pressure is placed on the spring washers. Tighten the securing nut firmly, making certain that the diaphragms do not change position or become wrinkled, and that the tabs are in correct location with the centre line of the flats on the pull rod as described above. Remove the completed diaphragm assembly from the vice and hold the lower pump body between the jaws of the vice by means of the pump mounting flange. Assemble the diaphragm spring into position with its lower end over the boss in the pump body, place the oil retaining washer B-110325 on the end of the pull rod housing followed by the washer retaining spring BF-13222, dip the diaphragm assembly in petrol and place into position with the tabs on its edge in line with the rocker arm. Push downwards against the diaphragm spring and oil retaining washer spring pressure and engage flat end of pull rod with the slot in the end of the pump link; turn the diaphragm assembly 90° to the right or the left to secure in position. If the holes in the diaphragm do not line up with the holes in the body flange when the diaphragm assembly is turned 90°, turn slightly until the holes line up and the tabs on the diaphragm are at a point nearest 90° from the original position. Fig. 48. Fig. 47 illustrates the component parts of the upper body, and Fig. 49 the parts of the lower body in their relative positions and by referring to these [Fig. 49 - Exploded Diagram] 33796 S4 Nut B-9397 Washer B-9395 Alignment Washer B-9391 Protector (Upper) B-9390 Diaphragm B-9392 Protector (Lower) B-9394 Gasket BF-13222 Oil Retaining Washer Tension Spring B-110325 Oil Retaining Washer B-9393 Pull Rod B-9396 Diaphragm Spring B-9376 Rocker Arm B-9375 Body (Lower) B-9380 Spring B-9378 Pin B-9381 Link B-9379 Retainers. Fig. 49. | ||