ISC, ISCe, QSC8.3, ISL, ISLe3, ISLe4 and QSL9 Engines – 001-024   Crankshaft Seal, Rear

Initial Check

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Verify that the rear crankshaft seal is the source of the oil leak by using fluorescent tracer, Part Number 3376891, or equivalent. Refer to Procedure 007-024 in Section 7.

 
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Preparatory Steps

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All Applications Except Marine


 WARNING 

Batteries can emit explosive gases. To reduce the possibility of personal injury, always ventilate the compartment before servicing the batteries. To reduce the possibility of arcing, remove the negative (-) battery cable first and attach the negative (-) battery cable last.

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Marine Applications


 WARNING 

Batteries can emit explosive gases. To reduce the possibility of personal injury, always ventilate the compartment before servicing the batteries. To reduce the possibility of arcing, remove the negative (-) battery cable first and attach the negative (-) battery cable last.

NOTE: On some vessels, it can be necessary to lift the engine to replace the rear crankshaft seal.

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Remove

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Drill two holes180 degrees apart into the seal carrier.

 
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Use a screwdriver and a slide hammer to remove the rear seal.

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Clean and Inspect for Reuse

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 CAUTION 

The seal lip and the sealing surface on the crankshaft must be free from all oil residue to prevent seal leaks.

Clean and dry the rear crankshaft sealing surface.

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Inspect the crankshaft for excessive wear.

NOTE: If the crankshaft has excessive wear, a service wear sleeve is available. Refer to Procedure 001-067 in Section 1.

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Install

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NOTE: For installation, the lubricating oil seal requires the application of a mild soap solution on the outside diameter of the seal carrier.

Install the seal pilot, provided in the replacement kit, onto the crankshaft. Push the seal onto the pilot and crankshaft.

Remove the seal pilot.

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Use the alignment tool to install the seal to the correct depth in the housing. Use a hammer to drive the seal into the housing until the alignment tool stops against the housing.

Hit the tool at 12, 3, 6 and 9-o’clock positions to drive the seal evenly and to prevent bending the seal carrier.

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Finishing Steps

TOC

All Applications Except Marine


 WARNING 

Batteries can emit explosive gases. To reduce the possibility of personal injury, always ventilate the compartment before servicing the batteries. To reduce the possibility of arcing, remove the negative (-) battery cable first and attach the negative (-) battery cable last.

SMALL | MEDIUM | LARGE
   

Marine Applications


 WARNING 

Batteries can emit explosive gases. To reduce the possibility of personal injury, always ventilate the compartment before servicing the batteries. To reduce the possibility of arcing, remove the negative (-) battery cable first and attach the negative (-) battery cable last.

SMALL | MEDIUM | LARGE
Last Modified:  31-Jul-2010