Maincase Assembly
| ITEM NO. | DESCRIPTION | PART NO. | QTY |
| 1 | MAGNESIUM MAINCASE | ERT-01-01 | 1 |
| 2 | STUD | ERT-01-17 | 9 |
| 3 | WASHER | ERT-01-11 | 9 |
| 4 | NUT | ERT-01-12 | 9 |
| 5 | DOWEL | ERT-01-13 | 1 |
| 6 | SIDEPLATE STUD | ERT-01-17 | 16 |
| 7 | SIDEPLATE STUD | ERT-01-17 | 2 |
| 8 | WASHER | ERT-01-08A | 18 |
| 9 | NUT | ERT-01-09 | 18 |
| 10 | 12:33 CROWNWHEEL AND PINION | ERT-03-01/2 | REQ |
| 11 | 12:32 CROWNWHEEL AND PINION | ERT-03-07/8 | REQ |
| 12 | 9:31 CROWNWHEEL AND PINION | ERT-03-03/4 | REQ |
| 13 | 10:31 CROWNWHEEL AND PINION | ERT-03-05/6 | REQ |
| 14 | PINION BEARING | ERT-03-09 | 1 |
| 15 | PINION BEARING RET RING | ERT-03-21 | 1 |
| 16 | PINION BEARING SHIM | ERT-03-22 | REQ |
| 17 | PINION BEARING BOLT | ERT-03-23 | 6 |
| 18 | BOLT RING WASHER | ERT-03-24 | 1 |
| 19 | LOCK RING | ERT-03-19 | 1 |
| 20 | INPUT SHAFT BEARING | ERT-03-11 | 1 |
| 21 | REVERSE IDLER BEARING | ERT-05-01 | 1 |
| 22 | REVERSE IDLER GEAR | ERT-05-17 | 1 |
| 23 | REVERSE IDLER SPIGOT | ERT-05-18 | 1 |
| 24 | GEAR BOLT | ERT-05-19 | 1 |
| 25 | GEAR RET WASHER | ERT-05-20 | 1 |
| 26 | FILTER PLATE | ERT-06-10 | 1 |
| 27 | PLATE BOLTS | ERT-06-13 | 6 |
| 28 | -6 FITTING | ERT-06-14 | 1 |
| 29 | CLUTCH SLAVE CYLINDER | ERT-07-01 | 1 |
| 30 | CLUTCH RELEASE BEARING | ERT-07-02 | 1 |
| 31 | BOLT CLUTCH SLAVE CYLINDER | ERT-07-03 | 3 |
| 32 | CLUTCH SHAFT STD | ERT-08-01 | 1 |
| 33 | CLUTCH SHAFT BRG | ERT-08-02 | 1 |
| 34 | CLUTCH SHAFT SEAL | ERT-08-03 | 1 |
| 35 | INTERNAL CIRCLIP | ERT-08-04 | 1 |
| 36 | EXTERNAL CIRCLIP | ERT-08-05 | 1 |
| 37 | RET BOLT | ERT-05-30 | 1 |
| 38 | TOP DOWEL 4 SPEED | ERT-06-29 | 1 |
| 39 | 1/8" BSP BLANKING SCREW | ERT-06-25 | 1 |
| 41 | BLANKING PLUG | ERT-06-15 | 1 |
| 42 | BLANKING PLUG 4 SPEED | ERT-06-32 | 1 |
| 43 | OIL PUMP DRIVING GEAR | ERT-06-01 | 1 |
| 44 | OIL PUMP GEAR | ERT-06-02 | 1 |
| 45 | PUMP GEAR CIRCLIP | ERT-06-27 | 1 |
| 46 | OIL PUMP DRIVING ROTOR | ERT-06-03 | 1 |
| 47 | OIL PUMP IDLER ROTOR | ERT-06-04 | 1 |
| 48 | OIL PUMP BODY | ERT-06-05 | 1 |
| 49 | FRONT COVER | ERT-06-06 | 1 |
| 50 | REAR COVER | ERT-06-07 | 1 |
| 51 | PUMP BODY BOLTS | ERT-06-08 | 4 |
| 52 | FILTER GAUZE | ERT-06-09 | 1 |
| 53 | O' RING | ERT-06-12 | 1 |
| 54 | PUMP MOUNTING BOLTS | ERT-06-16 | 4 |
| 55 | DOWEL / OIL FEED | ERT-06-23 | 1 |
| 56 | OIL FEED 'O' RING | ERT-06-24 | 1 |
| 58 | PUMP GEAR CIRCLIP | ERT-08-06 | 2 |
| 59 | PINION HEAD SQURTER | ERT-06-20 | 1 |
| 60 | PINION HEAD SQUIRTER DOWTY WASHER | ERT-05-26 | 1 |
| OIL PUMP SPACER | ERT-06-35 | 2 | |
| OIL PUMP SPACER | ERT-06-36 | 2 | |
| ALUMINIUM MAINCASE | ERT-01-36 | 1 | |
| MAGNESIUM MAINCASE / SINGLE SIDEPLATE | 1 |