| Item | Part No. | Part Name | Qty | Serial No. |
| G-1 | (\8\21W-973-X120) | MODIFIED GROUP,(FOR ATTACHMENT) (OP) | 1001- | |
| ==================== | ||||
| 21W-973-0010 | BOOM ASS'Y,1ST | 1001- | ||
| 1 | \6\ | BOOM | 1001- | |
| 2 | 201-70-21182 | BUSHING | 1001- | |
| 3 | 07020-00900 | FITTING,GREASE | 1001- | |
| 4 | 07145-00060 | SEAL,DUST | 1001- | |
| 5 | 09453-00002 | STOPPER | 1001- | |
| 6 | 01580-11210 | NUT | 1001- | |
| ==================== | ||||
| G-2 | (\8\21W-70-X1500) | COVER GROUP | 1001- | |
| ==================== | ||||
| 7 | 21W-70-11432 | BRACKET | 1680- | |
| 21W-70-11431 | BRACKET | 1001-1679 | ||
| 8 | 01010-50816 | BOLT | 1001- | |
| 9 | 01643-30823 | WASHER | 1001- | |
| 10 | 21W-70-11440 | PAD | 1001- | |
| 11 | 01010-50616 | BOLT | 1001- | |
| 12 | 01641-20608 | WASHER | 1001- | |
| 13 | 21W-70-11422 | COVER | 1680- | |
| 21W-70-11421 | COVER | 1001-1679 | ||
| 14 | 01010-51025 | BOLT | 1001- | |
| 15 | 01643-31032 | WASHER | 1001- | |
| ==================== | ||||
| 16 | 21W-70-11240 | PIN | 1001- | |
| 17 | 07020-00675 | FITTING,GREASE | 1001- | |
| 18 | 203-70-41460 | SPACER¤ 1.0MM | 1001- | |
| 203-70-41470 | SPACER¤ 2.0MM | 1001- | ||
| 19 | 21W-70-11310 | PLATE | 1001- | |
| 20 | 01010-51230 | BOLT | 1001- | |
| 21 | 01643-31232 | WASHER | 1001- |