| Item | Part No. | Part Name | Qty | Serial No. |
| 423-U12-3101 | PRE CLEANER | B31800- | ||
| 1 | \6\ | HOOD | B31800- | |
| 2 | 423-U12-3330 | BODY | B31800- | |
| 3 | 421-U12-3140 | CLAMP | B31800- | |
| 4 | 423-U12-3350 | ROTOR | B31800- | |
| 5 | 421-U12-3160 | BOLT | B31800- | |
| 6 | 421-U12-3170 | RING, SNAP | B31800- | |
| 7 | 421-U12-3181 | BEARING, BALL | B31800- | |
| 8 | 421-U12-3190 | BUSHING | B31800- | |
| 9 | 418-U12-3410 | BUSHING | B31800- | |
| 10 | 418-U12-3420 | SHIELD | B31800- | |
| 11 | 421-U12-3230 | NUT | B31800- | |
| 12 | 421-U12-3240 | BOLT | B31800- | |
| 13 | 421-U12-3250 | NUT | B31800- | |
| 14 | 421-U12-3260 | PLUG | B31800- | |
| 15 | 418-U12-3470 | WASHER, FLAT | B31800- |