| Item | Part No. | Part Name | Qty | Serial No. |
| 176-70-00161 | HOOK BLOCK ASS'Y,FOR UPPER | 31578- | ||
| 176-70-00160 | HOOK BLOCK ASS'Y | 15686-31577 | ||
| 1 | 196-70-12410 | SHEAVE | 31578- | |
| 1 | 176-70-11540 | SHEAVE | 15686-31577 | |
| 2 | 176-70-11530 | BEARING | 15686- | |
| 3 | 196-70-12420 | PLATE | 31578- | |
| 3 | 176-70-11550 | PLATE | 15686-31577 | |
| 4 | 196-70-12430 | PLATE | 31578- | |
| 4 | 176-70-11560 | PLATE | 15686-31577 | |
| 5 | 176-70-11210 | SHAFT | 15686- | |
| 6 | 196-70-12470 | COVER | 31578- | |
| 6 | 176-70-11191 | COVER | 15686-31577 | |
| 7 | 196-70-12450 | COVER | 31578- | |
| 7 | 176-70-11181 | COVER | 15686-31577 | |
| 8 | 176-70-11151 | HEAD | 15686- | |
| 9 | 176-70-11260 | BRACKET | 15686- | |
| 10 | 176-70-11160 | BOLT | 15686- | |
| 11 | 01580-13931 | NUT | 15686- | |
| 12 | 01643-33990 | WASHER | 15686- | |
| 13 | 176-70-11170 | BOLT | 15686- | |
| 14 | 01580-12016 | NUT | 15686- | |
| 15 | 01643-32060 | WASHER | 15686- | |
| 16 | 07020-00000 | FITTING,GREASE | 15686- | |
| 17 | 04530-11628 | BOLT | 15686- | |
| 18 | 01643-31645 | WASHER | 15686- | |
| 19 | 176-70-11110 | JOINT | 15686- | |
| 20 | 176-70-11120 | PIN | 15686- | |
| 21 | 176-70-11130 | COLLAR | 15686- | |
| 22 | 176-70-11140 | PIN | 15686- | |
| 23 | 04050-14025 | PIN,COTTER | 15686- | |
| 24 | 04501-02060 | WEDGE | 15686- | |
| 176-70-00181 | HOOK BLOCK ASS'Y,FOR LOWER | 31578- | ||
| 176-70-00180 | HOOK BLOCK ASS'Y | 15686-31577 | ||
| 25 | 196-70-12410 | SHEAVE | 31578- | |
| 25 | 176-70-11540 | SHEAVE | 15686-31577 | |
| 26 | 176-70-11530 | BEARING | 15686- | |
| 27 | 196-70-12420 | PLATE | 31578- | |
| 27 | 176-70-11550 | PLATE | 15686-31577 | |
| 28 | 176-70-11210 | SHAFT | 15686- | |
| 29 | 196-70-12460 | COVER | 31578- | |
| 29 | 176-70-42121 | COVER | 15686-31577 | |
| 29 | 176-70-11181 | COVER | 15686- | |
| 30 | 176-70-11260 | BRACKET | 15686- | |
| 31 | 176-70-11570 | HOOK ASS'Y | 15686- | |
| 32 | 176-70-11170 | BOLT | 15686- | |
| 33 | 01580-12016 | NUT | 15686- | |
| 34 | 01643-32060 | WASHER | 15686- | |
| 35 | 176-70-11160 | BOLT | 15686- | |
| 36 | 01580-13931 | NUT | 15686- | |
| 37 | 01643-33990 | WASHER | 15686- | |
| 38 | 07020-00000 | FITTING,GREASE | 15686- | |
| 39 | 07020-00000 | FITTING,GREASE | 15686- | |
| 40 | 04530-11628 | BOLT | 15686- | |
| 41 | 01643-31645 | WASHER | 15686- | |
| 42 | 176-70-11680 | CLIP ASS'Y | 15686- |