A New O-ring for the Injector Sleeve is Now Used {1100}
- On-Highway Engines:
- 3126E (S/N: HEP1-UP; CKM1-UP; 9SZ1-UP)
- C7 (S/N: SAP1-UP; KAL1-UP; WAX1-UP)
- C7 BUS (S/N: C7T1-UP)
- C7 TRUCK/BUS (S/N: YPG1-UP)
- C9 (S/N: C9S1-UP; 9DG1-UP; ETK1-UP)
Description of Change: The new O-rings that are used on the injector sleeve have been improved. The O-rings are now made with a more rugged material.
Adaptable To:
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Illustration 1 | g01437338 |
(1) Top O-ring (2) Bottom O-ring (3) Injector Sleeve |
When the injector sleeves are replaced, also replace the O-rings. Refer to Table 1 for the proper O-ring for your engine.
Show/hide table
New O-rings     | ||
Location     | Part Number     | Sales Model     |
Top O-ring     | 310-7255     | C7     |
C9 | ||
3126 | ||
Top O-ring     | 310-7258     | C7 with the S/N:C7S1-UP serial number prefix     |
C9 with the S/N:C9S1-UP serial number prefix | ||
Bottom O-ring     | 310-7257     | C7     |
C9 | ||
3126 | ||
Bottom O-ring     | 310-7259     | C7 with the S/N:C7S1-UP serial number prefix     |
C9 with the S/N:C9S1-UP serial number prefix |
Caterpillar Information System:
2008/01/07 A New O-ring for the Injector Sleeve is Now Used {1100}
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