| Item | Part No. | Part Name | Qty | Serial No. |
| 1 | YM172148-29100 | SPROCKET | 10001- | |
| 2 | YM26013-120352 | BOLT | 10001- | |
| 3A | YM772164-37100 | FRONT IDLER ASS'Y | 10001- | |
| 3B | YM772164-37110 | FRONT IDLER ASS'Y,(RUBBER CRAWLER SPEC.) | 10001- | |
| 4A | YM172631-37120 | IDLER | 10001- | |
| 4B | YM172164-37110 | IDLER,(RUBBER CRAWLER SPEC.) | 10001- | |
| 5 | YM172164-37130 | KIT,FRONT IDLER | 10001- | |
| 6 | YM172631-37150 | COLLAR | 10001- | |
| 7 | YM172631-37160 | COLLAR | 10001- | |
| 8 | YM172164-37120 | SEAL | 10001- | |
| 9 | YM172631-37180 | SHAFT,IDLER | 10001- | |
| 10 | YM22242-000300 | RING | 10001- | |
| 11 | YM22242-000350 | RING | 10001- | |
| 12 | YM24101-063074 | BEARING | 10001- | |
| 13 | YM172631-37200 | COVER | 10001- | |
| 14 | YM172631-37210 | COVER | 10001- | |
| 15A | YM933171-13691 | PLUG | 10001- | |
| 15B | YM194630-42120 | PLUG,(RUBBER CRAWLER SPEC.) | 10001- | |
| 16 | YM772164-37301 | ROLLER ASS'Y,TRACK | 10209- | |
| \0\YM772164-37300 | ROLLER ASS'Y,TRACK | 10001-10208 | ||
| 18 | YM172164-37321 | COVER | 10209- | |
| \0\YM172164-37320 | COVER | 10001-10208 | ||
| 19 | YM172164-37331 | COVER | 10209- | |
| \0\YM172164-37330 | COVER | 10001-10208 | ||
| 20 | YM172141-37140 | SEAL | 10335- | |
| \0\YM172164-37350 | SEAL | 10001-10334 | ||
| 21 | YM22252-000720 | RING | 10001- | |
| 22 | YM24101-062074 | BEARING | 10001- | |
| 23 | YM172164-37340 | SHAFT,ROLLER | 10001- | |
| 23A | YM933171-13691 | PLUG | 10209- | |
| 23B | YM172164-37200 | COLLAR | 10209- | |
| 23C | YM22252-000850 | RING,SNAP | 10209- | |
| 24 | YM172113-36050 | BOLT | 10001- | |
| 25 | YM22217-160000 | WASHER | 10001- | |
| 26 | YM26657-160002 | NUT | 10001- | |
| 27 | YM772164-37500 | ROLLER ASS'Y | 10001- | |
| 28 | YM172124-37520 | COVER,SEAL | 10001- | |
| 30 | YM172147-37510 | SHAFT | 10001- | |
| 31 | YM172124-37530 | COVER | 10001- | |
| 32 | YM22252-000750 | CLIP | 10001- | |
| 33 | YM24101-062064 | BEARING | 10001- | |
| 34 | YM172124-37540 | O-RING | 10001- | |
| 35 | YM1A1030-48250 | SEAL,OIL | 10001- | |
| 36 | YM22252-000620 | RING | 10001- | |
| 37 | YM22217-120000 | WASHER,SPRING | 10001- | |
| 38 | YM26116-120652 | BOLT | 10001- | |
| 39 | YM26716-120002 | NUT | 10001- | |
| 40 | YM172164-37720 | PLATE | 10001- | |
| 41 | YM172122-37710 | HOLDER,ADJUSTER | 10001- | |
| 42 | YM172164-37711 | SPRING,ADJUSTING | 10001- | |
| 43 | YM172122-37752 | ADJUSTER ASS'Y | 10001- | |
| 44 | YM172122-37782 | TUBE | 10001- | |
| 45 | YM172122-37810 | PISTON | 10001- | |
| 46 | YM172122-37820 | SEAL SET | 10001- | |
| 47 | YM172122-37843 | VALVE ASS'Y,NIPPLE | 10001- | |
| 48 | YM24315-000140 | O-RING | 10001- | |
| 49 | YM24761-020000 | FITTING,GREASE | 10001- | |
| 50 | YM26013-120402 | BOLT | 10001- |