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).
Inspection points and common faults for a high-pressure S.U. petrol pump.
| Identifier | ExFiles\Box 149\6\ scan0007 | |
| Date | 3rd September 1937 | |
| To RHC.{R. H. Coverley - Production Engineer} c.c. to Mr. Goodall. 12-63 Rm{William Robotham - Chief Engineer}/JBD.{John B. Dixon - Fuel Systems}6/JH.3.9.37. HIGH PRESSURE S.U. INSPECTION. Below is a list of the chief faults so far experienced on the S.U. petrol pump and which have caused considerable trouble and are the points to look for when the pump is inspected. (1) Magnet pot and contacts. The pole piece not concentric with magnet body. (2) Check diameter of outer locating race and inner diameter and inspect for tool marks. (3) Inspect for burs or hammer marks on pole piece and edge of the inner diameter of the pot. (4) Depth of pole piece below face of magnet body. Contacts. (1) Points lined up. (2) Freedom of movement of toggle arms with wires clear and slack in the flexible wire to the outer arm. (3) Armature spindle clear of contact bridge piece at the end of the stroke. (4) Sufficient thread left below the trunnion on the spindle for adjustment. Diaphragm Assembly and locating washers. (1) Armature truly at right angles with the spindle. (2) Diaphragm tight and end of shaft spun over. (3) Length of spindle and thread from armature. (4) Two fibre washers (each .005" thick) in armature recess. | ||