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).
Recommended procedure for adjusting and securing water pump glands.
| Identifier | ExFiles\Box 66a\3\ scan0154 | |
| Date | 4th November 1927 | |
| C O P Y. To BY from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} HS{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}3/LG4.11.27. WATER PUMP GLANDS At high engine speeds the gland adjusting nut can vibrate undone. We therefore recommend the following treatment when the spring loaded water pump gland comes on production. The gland should be built up and observed on test. When it has settled down it should be given a final adjustment, and then the knurled nut and pump drilled for a wire locking ring. Our experience is that the gland then requires no further adjustment throughout its life owing to the constant spring pressure available on the packing. In the improbable event of it weeping in service, the locking ring can be removed, the knurled nut tightened up and then returned to its original position and the locking ring replaced. This gives the packings a new bedding which is again retained by the spring. In the event of any difficulty owing to the nut being unable to follow up the packing wear, the locking ring could be provided with a slot in the pump casing and holes at 120° in the nut. With this the packing wear could be followed up within 1/6 turns. We do not, however, anticipate that this extra refinement will be necessary but indicate it on the attached sketch. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||