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).
Technical instructions for setting up rear brakes and servo systems on a 40/50 RR car.
| Identifier | ExFiles\Box 178\1\ img085 | |
| Date | 1st July 1924 | |
| - 4 - case it will tend to raise these levers off their stops. If they are raised off their stops the amount must not exceed 1/32" and the free movement at the end of the cam operating lever must not be less than .4". It is advisable to jack up the wheels and test if the brakes rub when on full lock either way. REAR BRAKES. There is no alteration to these brakes from those on the standard 40/50 RR. car, consequently, the setting up, bedding .etc. is the same as on the standard car. For correct clearance of these, there should be .625" movement at the end of the cam operating lever. The clearance must not be less than this. Rear pull ropes. There should be no slack, but the cam operating levers must be against their stops on the axle. SERVO. This should be fitted up as shewn on the arrangement drawing G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 72550. It is arranged for the drum to float endways on its ball races and it should do this freely. This end move-ment is to allow the drum to accommodate itself to the friction linings of the plates because the outer servo plate (to which is attached the pull lever and operating studs) has no end movement. This movement of the drum also provides for wear of the friction lining. The inner servo plate is free to float in the drum in a similar manner. This floating movement should be quite free otherwise the efficiency will be reduced and the plates may not separate under the action of the spring. contd. | ||