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).
Repairs and observations made on a Phantom III water pump for chassis 25.EX.
| Identifier | ExFiles\Box 92\3\ scan0173 | |
| Date | 18th March 1937 | |
| Boiler 300a To Rolls-Royce Ltd. Derby ...... Rm{William Robotham - Chief Engineer}/GWH{George W. Hancock - Head Chateauroux}/IMW{Ivan M. Waller - Head of Chateauroux} Copy to ...... Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux} Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} Levallois Sr/VA6/ET.18.3.37 Re: CHASSIS 25.EX - Phantom III. With reference to your Rm{William Robotham - Chief Engineer}/GWH{George W. Hancock - Head Chateauroux}/IMW{Ivan M. Waller - Head of Chateauroux}/6/JAB of the 14th instant and copy of Works memo Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}IO/AP.11.3.37, the following is our report on the water pump. During the repairs to the water pump, we observed the following: The E/77234 bush which is made of soft bearing material was found to be up to standard dimensions, but it was found to have been pushed back and therefore the inner or small end of the bush did not stand proud of the pump casing by ".025", as the drawing calls for. We pushed the bush home and thereby obtained a working clearance of ".025" between the front flat face of the blades and the pump casing. We also found that the bronze bushes as fitted between the gland packings were fitted the wrong way round, thereby preventing lubricant reaching the pump spindle, etc.. The spindle, however, was found to in an OK. condition and we fitted new gland packings and fitted the bronze bushes the correct way round. We also found the thrust plug to be in a poor condition. As we did not have one in stock, we reconditioned it by brazing a piece of bronze on to the end of it and then trimming up the end so as to give the necessary clearance between the blades and the casing. The whistling noise which came from the pump prior to our repairing it was caused by the blades fouling the casing, which was marked internally. Sr/VA. | ||