- Electric Power Generation:
- C13 (S/N: X3M1-UP; NH31-UP; DH41-UP)
- Engine:
- C13 (S/N: N3F1-UP; KWJ1-UP)
- Industrial Engine:
- C13 (S/N: RRA1-UP; LGK1-UP)
ReferenceThe Disassembly and Assembly and Reuse & Salvage Guidelines service manual have been updated to improve serviceability of the Crankshaft Rear Seal.
ReferenceDisassembly and Assembly, "Flywheel - Remove and Install"
ReferenceReuse and Salvage Guidelines, SEBF9217, "Specifications for Crankshafts C7, C9, C-9, C10, C11, C12, C-12, C13, C-13, C15, C-15, C18, C-18, C27, C30, and C32 Engines" or the correct specification of the crankshaft.
ReferenceReuse and Salvage Guidelines, SEBF8039, "Crankshaft Visual Inspection and Magnetic Particle Inspection"
Description of Change: An improved manufacturing processes and reliability for the rear engine crankshaft seal.
Adaptable To: The 226-4757 Crankshaft Seal Gp and 227-0838 Crankshaft Seal Gp are adaptable back to first production on the serial numbers listed above.
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| Illustration 1 | g03698857 |
Example 1: November 16, 2006 is translated to 161106. Which is coded "ULUUNL". Example 2: May 26, 2010 is translated to 260510. Which is coded "MLNAUN" Example 3: January 5, 2024 is translated to 050124. Which is coded "NANUMR" | |
The improved crankshaft seal displays an alpha date code (1) on the label. The presence of the alpha date code is the primary way to identify an improved seal. The improved processes have been effective since 10 November 2014.
Refer to Disassembly and Assembly, "Crankshaft Rear Seal - Remove and Install" for improved service instructions on wear sleeve use.
Note: Only use a wear sleeve at overhaul if required
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| Illustration 2 | g03698705 |
An updated procedure for the numerical torque sequence is now used. Torque the crankshaft rear seal in the sequence shown in Illustration 2.