| GER Class B74 LNER Class Y4 | |
| Powertype: | Steam |
| Designer: | A. J. Hill |
| Builder: | Stratford Works |
| Builddate: | 1913–1921 |
| Totalproduction: | 5 |
| Whytetype: | 0-4-0T |
| Uicclass: | B n2t |
| Driverdiameter: | 3feet |
| Wheelbase: | 6feet |
| Length: | 24feet over buffers |
| Locoweight: | full |
| Fueltype: | Coal |
| Watercap: | 750impgal |
| Boiler: | LNER Diagram 40 |
| Boilerpressure: | 1802NaN2 |
| Firearea: | 13.9square feet |
| Tubearea: | 905.4square feet |
| Fireboxarea: | 75.1square feet |
| Totalsurface: | 980.5square feet |
| Superheatertype: | None |
| Cylindercount: | Two, outside |
| Cylindersize: | 17x |
| Valvegear: | Walschaerts |
| Valvetype: | Slide valves |
| Tractiveeffort: | 192242NaN2 |
| Powerclass: | BR: 0F |
| Nicknames: | Pots |
| Axleloadclass: | LNER/BR: RA 6 |
| Withdrawndate: | 1955-1957 (4), 1963 (1) |
| Disposition: | All scrapped |
The GER Class B74 was a class of five 0-4-0T steam locomotives designed by Alfred John Hill for the Great Eastern Railway. They all passed to the London and North Eastern Railway at the 1923 grouping and received the LNER classification Y4.
These locomotives had 17by outside cylinders driving 3feet wheels. They were built to replace the older, less powerful Class 209 (LNER Class Y5). From 1914 two of the class worked the Globe Road & Devonshire Street goods yards.[1]
| Year | Order | Manufacturer | Quantity | GER Nos. | LNER Nos. | LNER 1944 Nos. | Notes |
|---|---|---|---|---|---|---|---|
| 1913 | B74 | 1 | 227 | 7227 | 8125 | ||
| 1914 | B77 | 2 | 228, 226 | 7228, 7226, | 8126, 8127 | ||
| 1921 | A82 | 2 | 229, 210 | 7229, 7210 | 8128, 8129 | ||
In 1952, number 68129 was transferred to the Service (departmental) list and renumbered 33. Withdrawals started in 1955 with 68125, with 68127 and 68128 going in 1956 and 68126 in 1957. The last to be withdrawn was 33, in 1963.