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Rear Engine Seal Cover

Discussion in 'VT - VX Holden Commodore (1997 - 2002)' started by Nothing Sounds Like A V8, Sep 26, 2018.

  1. Nothing Sounds Like A V8

    Nothing Sounds Like A V8 New Member

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    Hi
    I am new to this forum so I am hopeful someone out there can help me.
    My VX SS is leaking oil out of the rear engine plate that houses the rear main seal.
    My mechanic has told me that to re-seal the plate he has to drop the sump which means dropping the front end's K Frame.
    From what I have read including the repair manual, the sump does not have to be dropped - you drop the gearbox, take off the clutch and flywheel assembly and then take off the cover seal.
    Can someone verify whether or not what I am saying is correct - that the sump does NOT have to be dropped in order to re-seal the rear engine plate.
    Thanks heaps.
     
  2. EYY

    EYY Well-Known Member

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    Sump does NOT have to be removed. I've done the job myself. But you need to make sure you use the proper alignment tool which I doubt most workshops would have. Without the tool you're taking a gamble - it may seal for a while or it may leak straight away.

    You can use a good set of verniers to ensure it's centred around the crank if the seal hasn't been pushed into the plate yet but it takes a bit of messing around.

    Despite what you read, rear main seal is one of the less common causes for leaks. First places to look:
    -rocker cover gaskets
    -oil pressure sender
    -valley plate gasket
    -sump gasket

    Sump can be removed with the engine still in the car but the K frame needs to be dropped for clearance.
     
  3. Tonner Matt

    Tonner Matt Well-Known Member

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    Sump does not have to be removed to replace either the rear main seal or the rear main plate assembly
     
    Last edited: Dec 3, 2018
  4. Nothing Sounds Like A V8

    Nothing Sounds Like A V8 New Member

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  5. Nothing Sounds Like A V8

    Nothing Sounds Like A V8 New Member

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    Sincere thank you for the info.
    This should save heaps on the repair bill.
     
  6. Sabbath'

    Sabbath' Redblock Jesus

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    But, for the extra 3 hours or so...reseal the sump at the same time.
     
  7. Nothing Sounds Like A V8

    Nothing Sounds Like A V8 New Member

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    Does anyone know where the best place is to buy the rear seal alignment tool for the LS1?
    Thanks
     
  8. EYY

    EYY Well-Known Member

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    Holden if still available or eBay.
     
  9. mpower

    mpower Well-Known Member

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    might as well do the sump while you are in there.
     
  10. Drewie

    Drewie Active Member

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    Don't know if this is still relevant but someone posted this PDF on the LS1 site many years ago supposedly from a GM workshop manual, it may have been before you could buy the plate with the seal in position.
     

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