| Item | Part No. | Part Name | Qty | Serial No. |
| 23S-P51-1011 | HOOK BLOCK ASS'Y | 53001- | ||
| 1 | 23S-P51-1110 | HOOK | 53001- | |
| 2 | 23S-P50-2320 | PLATE | 53001- | |
| 3 | 23S-P50-2330 | SPRING | 53001- | |
| 4 | 01010-80860 | BOLT | 53001- | |
| 5 | 23S-P50-2340 | NUT | 53001- | |
| 6 | 23S-P51-1120 | NUT | 53001- | |
| 7 | 01435-01020 | BOLT | 53001- | |
| 8 | 23S-P51-1130 | PLATE | 53001- | |
| 9 | 06000-51210 | BEARING | 53001- | |
| 10 | 23S-P51-1140 | COVER | 53001- | |
| 11 | 07020-00001 | FITTING,GREASE | 53001- | |
| 12 | 23S-P51-1150 | TRUNNION | 53001- | |
| 13 | 23S-P51-1160 | PLATE,L.H. | 53001- | |
| 14 | 23S-P51-1170 | PLATE,R.H. | 53001- | |
| 15 | 01010-81630 | BOLT | 53001- | |
| 16 | 23S-72-51180 | PLATE | 53001- | |
| 17 | 23S-P50-2291 | SHEAVE | 53001- | |
| 18 | 06032-06214 | BEARING | 53001- | |
| 19 | 23S-P51-1180 | PIN | 53001- | |
| 20 | 23S-P51-1191 | SPACER | 53001- | |
| 21 | 01643-31645 | WASHER | 53001- | |
| 22 | 23S-P50-2310 | PLATE | 53001- | |
| 23 | 23S-P51-1210 | BOLT | 53001- | |
| 24 | 23S-P51-1220 | GUIDE | 53001- | |
| 25 | 23S-P51-1230 | BAR | 53001- | |
| 26 | 01580-11210 | NUT | 53001- | |
| 27 | 01643-31645 | WASHER | 53001- |