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).
Letter from Lendrum & Hartman Limited providing instructions for cleaning Oil Temperature Regulators.
| Identifier | ExFiles\Box 131\1\ scan0182 | |
| Date | 13th March 1936 | |
| Messrs. Rolls-Royce Ltd. -2- 13.3.36. Sincerely hoping that this rather limited information may be of some assitance to you in judging this cooler, we beg to remain, Yours faithfully, FOR LENDRUM & HARTMAN LIMITED, M.G.ARMSTRONG, Manager. Information in connection with clesning Oil Temperature Regulators. Cleaning Fluid to be used is "Benzol" or "Coal Tar Naptha". Two gallons of fluid being sufficient to clean four oil temperature regulators. The Benzol or Coal Tar Naptha can be obtained from a chemical, paint or drug supply house. Do not use gasoline,benzine or naphtha supplied at gasoline stations. Submerge regulator assembly in Benzol with oil fittings up for at least 5 minutes. Remove regulator and attach oil gun on inlet. Replace regulator in Benzol and pump vigorously for several minutes to remove dissolved material. Remove regulator from Benzol and disconnect oil gun. Blow out both oil and water chambers, using from 50 to 80 lbs. air pressure. | ||