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).
Servicing instructions and fault diagnosis for a regulator.
| Identifier | ExFiles\Box 60\3\ Scan253 | |
| Date | 18th October 1933 | |
| -2- Hs{Lord Ernest Hives - Chair}/Wst.1/MA.18.10.33. Cont'd.{John DeLooze - Company Secretary} Servicing. This regulator is sealed and in the event of suspected failure should not be readjusted or interfered with in anyway. It should be removed intact from the dashboard and returned to Rolls-Royce Ltd., or Bentley Motors Ltd., for replacement. Possible causes of failure. (a) Dynamo registers excessive charge and blows the fuse when speeded up. This may be due to the regulator sticking, or an open circuit in the regulator shunt coil circuit. Check regulator wiring connections before removing regulator. (b) Low output, may be due to battery being fully charged, but if low with lights on, i.e. ammeter indicates a big discharge the regulator may be sticking in such a manner as to permanently insert the field resistance. (c) No charge obtainable. It can be ascertained whether the dynamo or the regulator is at fault, by removing the cover of the regulator, and connecting terminal l to terminal E, and the terminal to terminal A.{Mr Adams} The engine should then be gently started and the speed slowly raised, when, if the dynamo is alright, the output will be delivered direct to the cutout, the regulator being short circuited. Hs{Lord Ernest Hives - Chair}/Wst. | ||