A New Unit Injector Wiring Group Is Used on Certain C9.3 Industrial Engines {1290, 1408, 1900}
- Industrial Engine:
- C9.3 (S/N: C9N1-UP; D9N1-UP)
Description of Change: A new unit injector wiring harness is now available for Tier 4i C9.3 Industrial Engines. The new harness incorporates a protective sleeve on the exposed section of wiring connecting to the fuel injector to provide added protection against abrasion. Refer to Illustration 1.
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| Illustration 1 | g03206556 |
(1) Location of protective sleeve | |
Adaptable To: The new unit injector wiring group replaces the existing wiring group on the serial numbers listed above. Refer to Table 1 for a list of the new part numbers and the part numbers that are being replaced.
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| New Part Number | Former Part Number |
| 399-4012 | 353-5939 |
| 399-4009 | 353-6013 |
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| Effective Serial Numbers |
| S/N:C9N1275-UP |
| S/N:D9N1-UP |
Caterpillar Information System:
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