Instructions on vehicle electrical systems, including battery charging and starter motor fault diagnosis.
| Identifier | ExFiles\Box 26\2\ Scan357 | |
| Date | 10th May 1930 guessed | |
| -8- Always, when taking leave of the car, make a practice of checking that the ammeter does not show any discharge current." Additional electrical apparatus. "If electrical apparatus................... for the purpose". Charging in position from external source. "It is possible.................... should be consulted. Charging in the garage ...... bulbs should be used, e.g. BAS.10, 12/14 volts 6 watts only, or preferably bulbs of 4 watts only. Where a suitable direct current supply is available we recommend that it be made a rule to leave the battery on charge at trickle rate (about half an ampere) when the car is in the garage, as such a procedure will assist in keeping the battery in a thoroughly good condition. A small capacity metal rectifier unit is especially suitable for this purpose. Care should be taken that the charging circuit be electrically sound and properly protected by a fuse. For full instructions concerning charging of the battery from a power sourse either on or off the car, refer to the battery makers pamphlet/at the end of this book. Electrical fault location. "An electric torch......... at coil terminals. If, with battery in order, the starter fails to complete the pinion engaging and switch-operating motion this may be due to :- (1) Mechanical sticking or jamming of armature. This, if continual, may be due to gummed motor brushes or grit in main motor bearings. If occasionally, it may be due to the initial set of the pinion buffer spring being too strong or to the pinion being too near the gear ring when at rest. (2) as (1) [Handwritten note next to 'Additional electrical apparatus' section] Deleted here and appended to Accessory distribution box. [Handwritten note below '...at the end of this book.'] inserted | ||
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).