| Year | 2009 |
| Date | 27-Mar |
| Volume | 202 |
| Issue | 4,348 |
| Page | 399 |
| Category | Locomotive |
| Part | |
| Title | Repairing a slide valve |
| Author | Peter Allen |
| Notes | Describes how he repaired a slide valve without having to dismantle the locomotive. Royston DMES, another problem revealed, lapping, honing, new piston rings |