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).
Radiator cleaning procedures, the use of non-freezing solutions, and water pump packing maintenance.
| Identifier | ExFiles\Box 150\2\ scan0298 | |
| Date | 23th January 1940 guessed | |
| - 2 - Continued:- If the radiator is badly clogged it may become necessary to obtain a proper cleaned and followed the instructions of the manufacturer of the cleaner. If responsible personnel is available to do this a solution of one part muriatic acid to three parts water may serve to loosen the scale and a solution of washing soda to remove the grease and oil. These solutions should be heated to luke warm before use and allowed to stand in the radiator and water jackets for three to four hours. After removal the engine and radiator must be thoroughly rinsed out so that no trace of cleaning liquid reamins, and the system again filled up with clean water. A good, non-freezing solution should be used in the winter time so as to prevent the water circulating system from freezing with the possibilities of damage to engine cylinder jackets or head. There are a number of good solutions on the market today which are satisfactory, among which are ethylene glycol ("Bluecol"), glycerine and others of a similar chemical constitution, It is very important that the water pump packing be kept tight at all times. If the packing pulls loose and has a tendency to leak water at low engine speeds and sucks air at a higher engine speeds, it is likely to cause damage to the radiator tanks, the core, the engine cylinder blocks, the pump impeller and other parts due to chemical action which is set up by the mixture of air and water. | ||