| Item | Part No. | Part Name | Qty | Serial No. |
| 1 | 23B-70-52130 | COVER | 51501- | |
| 2 | 01010-81025 | BOLT | 51501- | |
| 3 | 01643-31032 | WASHER | 51501- | |
| 4 | 23B-70-52140 | COVER | 51501- | |
| 5 | 23B-70-52311 | WHEEL,WORM | 51501- | |
| 6 | 23B-70-52180 | SHAFT | 51501- | |
| 7 | 235-70-45260 | SPACER | 51501- | |
| 8 | 714-07-12680 | PLATE,SEPARATE | 51501- | |
| 9 | 235-70-45420 | DISC | 51501- | |
| 10 | 235-70-45270 | SPACER | 51501- | |
| 11 | 235-70-45360 | SPRING | 51501- | |
| 12 | 23B-70-52210 | BUSHING | 51501- | |
| 13 | 23B-70-52240 | COLLAR | 51501- | |
| 14 | 23B-70-52230 | PLATE | 51501- | |
| 15 | 01010-81240 | BOLT | 51501- | |
| 16 | 01643-31232 | WASHER | 51501- | |
| 17 | 235-70-45330 | SHIM, 0.5MM | 51501- | |
| 17 | 235-70-45340 | SHIM, 0.2MM | 51501- | |
| 18 | 07000-15195 | O-RING | 51501- | |
| 19 | 23B-70-52110 | CASE | 51501- | |
| 20 | 07000-15260 | O-RING | 51501- | |
| 21 | 07041-13012 | PLUG | 51501- | |
| 22 | 07002-13034 | O-RING | 51501- | |
| 23 | 07040-11812 | PLUG | 51501- | |
| 24 | 07002-11823 | O-RING | 51501- | |
| 25 | 23B-70-52290 | SEAL | 51501- | |
| 26 | 23B-70-52190 | BUSHING | 51501- | |
| 27 | 23B-70-52121 | WORM | 51501- | |
| 28 | 06002-30310 | BEARING | 51501- | |
| 29 | 01010-81030 | BOLT | 51501- | |
| 30 | 01643-31032 | WASHER | 51501- | |
| 31 | 23B-70-52320 | PLATE | 51501- | |
| 32 | 07042-70108 | PLUG | 51501- | |
| 33 | 238-70-16210 | SHIM, 0.1MM | 51501- | |
| 33 | 238-70-16220 | SHIM, 0.2MM | 51501- | |
| 33 | 238-70-16240 | SHIM, 1.0MM | 51501- | |
| 33 | 23B-70-52470 | SHIM, 0.05MM | 51501- | |
| 34 | 23B-70-52250 | HOUSING | 51501- | |
| 35 | 01140-81235 | STUD | 51501- | |
| 36 | 01582-11210 | NUT | 51501- | |
| 37 | 01643-31232 | WASHER | 51501- | |
| 38 | 07000-12130 | O-RING | 51501- | |
| 39 | 23B-62-31100 | MOTOR ASS'Y | 51501- | |
| 40 | 01252-41035 | BOLT | 51501- | |
| 41 | 01643-31032 | WASHER | 51501- | |
| 42 | 23B-70-16240 | O-RING | 51501- |