BUT - Equipment fitted to Diesel Multiple Units
51681-55999
Index of Initial Equipment Fitted to Railcars (From the BUT Spare Parts Catalogue: AEC, SCG. Ltd & Leyland sections).
| Vehicle Nos. | BR Lot No. | BUT DTO No. | Builder | Number of Cars | Equipments per car | Engines | Gearboxes | Final Drives | ||||
| No. 1 Position | No. 2 Position | |||||||||||
| Type | List No. | Type | List No. | Type & List No. | ||||||||
| M51681-M51705 | 30533 | 1/43 | Cravens | 25 | 1 | R. R. | SE4 | 6924 | - | - | RF28 | 6489 |
| M51706-M51730 | 30534 | 1/43 | Cravens | 25 | 1 | R. R. | SE4 | 6924 | - | - | RF28 | 6489 |
| M51731-M51755 | 30535 | 1/48 | Cravens | 25 | 1 | R. R. | Rolls-Royce torque converters | RF28 | 7008 | |||
| M51756-M51780 | 30536 | 1/48 | Cravens | 25 | 1 | R. R. | Rolls-Royce torque converters | RF28 | 7008 | |||
| SC51781-SC51787 | 30559 | 1/51 | Swindon | 7 | 2 | A52 | R14 | 5715 | R14 | 5713 | - | - |
| SC51788-SC51794 | 30560 | 1/51 | Swindon | 7 | 2 | A52 | R14 | 5715 | R14 | 5713 | - | - |
| SC51795-SC51801 | 30587 | 1/39 | Met. Cam. | 7 | 2 | Leyland 680/17 | R14 | 6321 or 6726 | R14 | 6321 or 6726 | - | - |
| SC51802-SC51808 | 30588 | 1/39 | Met. Cam. | 7 | 2 | Leyland 680/17 | R14 | 6321 or 6726 | R14 | 6321 or 6726 | - | - |
| E51809-E51828 | 30592 | 1/52 | BRCW | 20 | 2 | R. R. | SE4 | 7002 | SE4 | 7002 | - | - |
| E51829-E51848 | 30593 | 1/52 | BRCW | 20 | 2 | R. R. | SE4 | 7002 | SE4 | 7002 | - | - |
| M51849-M51860 | 30595 | 1/50 | Derby C&W | 12 | 2 | Leyland 902/11 | SE4 | 7027 | SE4 | 7027 | RF28 | 6489 |
| M51861-M51900 | 30598 | 1/50 | Derby C&W | 40 | 2 | Leyland 902/11 | SE4 | 7027 | SE4 | 7027 | RF28 | 6489 |
| M51901-M51950 | 30601 | 1/54 | Derby C&W | 50 | 2 | Leyland 680/18 | R14 | 6321 or 6726 | R14 | 6321 or 6726 | - | - |
| E51951-E51967 | 30603 | 1/53 | Swindon | 17 | 2 | Leyland 902/12 | SE4 | 7027 | SE4 | 7027 | RF28 | 7343 |
| E51968-E51984 | 30604 | 1/53 | Swindon | 17 | 2 | Leyland 902/12 | SE4 | 7027 | SE4 | 7027 | RF28 | 7343 |
| SC51985-SC52010 | 30610 | 1/55 | Derby C&W | 26 | 2 | A52 | R14 | 6297 | R14 | 6297 | - | - |
| SC52011-SC52036 | 30612 | 1/55 | Derby C&W | 26 | 2 | A52 | R14 | 6297 | R14 | 6297 | - | - |
| M52037-M52065 | 30660 | 1/54 | Derby C&W | 29 | 2 | Leyland 680/18 | R14 | 6321 or 6726 | R14 | 6321 or 6726 | - | - |
| M52066-M52075 | 30691 | 1/64 | BRCW | 10 | 2 | R. R. | SE4 | 7002 | SE4 | 7002 | - | - |
| M52076-M52085 | 30692 | 1/64 | BRCW | 10 | 2 | R. R. | SE4 | 7002 | SE4 | 7002 | - | - |
| W52086-W52095 | 30703 | - | Swindon | 10 | 2 | - | SE4 | 7027 or 7725 | SE4 | 7027 or 7725 | RF28 | 7726 |
| W52096-W52105 | 30704 | - | Swindon | 10 | 2 | - | SE4 | 7027 or 7725 | SE4 | 7027 or 7725 | RF28 | 7726 |
| W55000-W55019 | 30419 | 1/25 | Glos. C&W | 20 | 2 | A52 | R14 | 6297 | R14 | 6297 | - | - |
| W55020-W55035 | 30518 | 1/57 | Pressed Steel | 16 | 2 | A52 | R14 | 6321 or 6726 | R14 | 6321 or 6726 | - | - |
| M55987-M55990 | 30552 | 1/45 | Glos. C&W | 4 | 2 | Leyland 900/10 | SE4 | 6721 | SE4 | 6721 | RF28 | 6489 |
| W55991-W55996 | 30551 | 1/45 | Glos. C&W | 6 | 2 | Leyland 900/10 | SE4 | 6721 | SE4 | 6721 | RF28 | 6489 |
| W55997-W55999 | 30418 | 1/20 | Cravens | 3 | 2 | A51 | R14 | 5709 | R14 | 5711 | - | - |
AEC Engine Variations
The AEC Spare Parts catalogue divides engines into two sections: A51 or A52. Second column below is the DTO nos. and should be referenced to the tables above.
A51
| A220L | 1/B, 1/2, 1/5 | Engine complete with flywheel (belt tensioner & dynamo) |
| A220S | 1/3, 1/20 | Engine complete with flywheel (right-angle drive) |
| A220W | 1/6 | Engine as A220S with two oil-pressure switches |
| A220Y | 1/7, 1/11, 1/11B | Engine as A220L less dynamo |
| These all had 18" flywheels and were supplied without fuel filter, fuel pipes and electrical installations. I also believe that all A51s originally had winch gear fitted to assist with engine swaps. Further details would be appreciated. | ||
A52
| A220AC | 1/12, 1/14 (24-off), 1/16, 1/17,1/21, 1/22, 1/23 (6-off), 1/25, 1/27, 1/31, 1/33, 1/40, 1/57 | Engine complete with flywheel, twin fuel filter, fuel pipes & fittings and electrical installations (right-angle drive) |
| A220AJ | 1/26 | Engine as A220AC less air compressor and one oil-pressure switch |
| A220AK | 1/51, 1/56 | Engine as A220AC with 3" shorter oil filler tube |
| A220AL | 1/34 | Engine as A220AK with Simms starter motor |
| A220AZ | 1/32 | Engine as A220AJ less fan shaft spacer and with different electrical installations |
| A220BB | 1/55 | Engine as A220AC with Simms starter motor |
| These all had 20" flywheels and were supplied with fuel filter, fuel pipes and electrical installations. | ||
Gearbox Notes
Type R14 Gearbox List No. 6321 when modified was List No. 6726. Boxes were interchangable.
Type R14 Gearbox List No. 7207 when modified was List No. 7725. Boxes were interchangable.