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).
Inspection report on issues found with inlet pipes, oil pump, and various filters.
Identifier | ExFiles\Box 83\1\ scan0194 | |
Date | 14th September 1936 | |
( 2 ) GWH{George W. Hancock - Head Chateauroux}/IMW{Ivan M. Waller - Head of Chateauroux}/3/JAB.14.9.36 stems. The Inlet valve seats were pitted but not deeply. Ordinary grinding-in gave a petrol tight joint in every case. INLET PIPES. LOP EB.2703. Existing, complete to above LOP - Standard Production. It was found that the two water pipes which enter the cylinder head were too long and had been touching the casting. This had damaged their ends & also tended to hold the inlet pipe flanges away from their faces. The pipes were reduced in length from I.33" to I.2" before re-fitting. OIL PUMP. LOP EB.2216 Arragt. Ex.II955 increased capacity. Existing, complete to above LOP & Arragt. incorporating :- Ex. II936 Casing. Ex. II937/8 Gears. LEC 4412 Relief Valve. EB.2303 Pump Cover. The pump gears have marked the barrels on the suction side of the case. The thrust towards the suction side, due to the difference of pressure on the two sides of the gears had taken up all the clearances allowed. OIL FILTER. LOP E.{Mr Elliott - Chief Engineer} 60II2. Existing, complete to above LOP - Standard Production. Considerable quantities of metal had passed straight through this filter into the oil pump, when the big end failed. GAUZE PRESSURE FILTER. LOP E.7984 LEC 4692. Existing, complete to above LOP - Standard Production. No metal was found to have passed the pressure filter, which contained a considerable quantity after the bearing failure. It saved the other bearings, and in view of the comparative uselessness of the suction filter, would seem to be an essential fitting. In order to examine & clean the gauze, either the complete unit has to be removed from the car, or else the steering box removed to allow the gauze to be withdrawn. The filter had been examined at 5540 miles and found to be uniformly covered by a thick coating of black sludge, there was then no metal present. It was cleaned, the engine sump was drained and a fresh supply of Castrol "XL" added. At 10,786 miles, i.e. after a further 5,000 miles running, there was no appreciable sludge on the filter. -------------------- GWH{George W. Hancock - Head Chateauroux}/IMW.{Ivan M. Waller - Head of Chateauroux} J.{Mr Johnson W.M.} M.{Mr Moon / Mr Moore} Wallas | ||