- Track-Type Tractor:
- D11T (S/N: GEB1-UP; TPB1-UP)
- D11R (S/N: 7PZ1-UP; AAF1-UP; 8ZR1-UP; 9TR1-UP; 9XR1-UP)
- D11N (S/N: 4HK1-UP; 74Z1-UP)
Description of Change: An improved track bushing is now used on the D11T, D11R, and D11N. The improved bushing is hardened to a deeper depth for a longer wear life. The improved bushing is stronger in order to resist cracking. The improved bushing has a larger radius between the diameter on the end and the center diameter. The difference in the radius is noted in Illustration 1 and Illustration 2.
Adaptable To: 215-7493 Track Bushing has been cancelled and replaced with 306-9425 Track Bushing .
The former standard 215-7494 Track Link Assembly has been cancelled and replaced with the new 316-3370 Track Link Assembly .
The former tall 215-7678 Track Link Assembly has been cancelled and replaced with the new tall 316-3369 Track Link Assembly.
| Required Parts | ||
| New Part Number | Former Part Number | Description |
| 306-9425 | 215-7493 | Track Bushing |
| 316-3370 | 215-7494 | Standard Track Link Assembly |
| 316-3369 | 215-7678 | Tall Tough Steel Track Link Assembly |
- D11T (S/N: GEB320-UP; TPB167-UP)
- Track Link Assemblies (S/N: PJ203H01-UP)
- D11T (S/N: GEB1-319; TPB1-166)
- D11R (S/N: 7PZ1-UP; AAF1-UP; 8ZR1-UP; 9TR1-UP; 9XR1-UP)
- D11N (S/N: 4HK1-UP; 74Z1-UP)
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| Illustration 1 | g01641480 |
The improved 306-9425 Track Bushing with a 25 mm (0.984 inch) radius (1) | |
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| Illustration 2 | g01641481 |
The former 215-7493 Track Bushing with a 10 mm (0.394 inch) radius (2) | |