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).
Service bulletin for the AC Petrol Gauge (geared type tank unit) including a troubleshooting chart.
| Identifier | ExFiles\Box 61\3\ scan0278 | |
| Date | 18th September 1931 | |
| AC SPHINX SPARKING PLUG CO., LTD. BIRMINGHAM BULLETIN GAUGE-106 AC SPHINX SERVICE BULLETIN Date: 18-9-31 Sheet 3 No. of Sheets 3 SUBJECT--AC PETROL GAUGE (With GEARED TYPE TANK UNIT) Cont'd.{John DeLooze - Company Secretary} SERVICE In general, service will be by replacement of the inoperative unit. Exceptions are the glass bezel, face gaskets and reflector ring of the dash unit. Connecting wires and miscellaneous parts are in some cases furnished by AC, and in other cases by the car manufacturer. When furnished by AC these parts will be shown in bulletins covering the gauge application. SERVICE INSTALLATION The AC Petrol Gauge is designed only for standard installation by the car manufacturer. It is not recommended for use on cars not so equipped or for replacement of some other make. TROUBLE CHART GAUGE ACTION 1. Pointer will not move when ignition switch is turned "On." 2. Gauge shows "Full" under all conditions. 3. Gauge shows "Empty" under all conditions.. CAUSE Break in line between Dash Unit and Ignition Switch. Break in line between Dash Unit and Tank Unit. a.{Mr Adams} Wires reversed on Dash Unit. b. Dash Unit not "grounded." c. Tank Unit not "grounded." REMEDY Repair line. Repair line. Reattach wire to proper terminals. Replace Dash Unit. Replace Tank Unit. Do not attempt to lubricate either Dash Unit or Tank Unit. | ||