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Replacing Engine Gaskets

Gasket Reuse and Applying Sealant

    • Do not reuse any gasket unless specified.
    • Gaskets that can be reused will be identified in the service procedure.
    • Do not apply sealant to any gasket or sealing surface unless specified in the service procedure.

Separating Components

    • Use incorporated pry points to separate components using an RTV sealing system.
    • Do not try to separate RTV sealed components by prying against other engine components.
    • Pry points are positioned so no other vital engine components are damaged when they are used.

Cleaning Gasket Surfaces

    • Use care to avoid gouging or scraping the sealing surfaces.
    • Use a plastic or wood scraper in order to remove all the sealant from the components.
        Do not use any other method or technique to remove the sealant or the gasket material from a part.
    • Do not use abrasive pads, sand paper, or power tools to clean the gasket surfaces.
       - These methods of cleaning can cause damage to the component sealing surfaces.
       - Abrasive pads also produce a fine grit that the oil filter cannot remove from the engine oil.
         This fine grit is an abrasive and can cause internal engine damage.

Assembling Components

    • Assemble components using only the sealant, or equivalent, that is specified in the service procedure.
    • Sealing surfaces must be clean and free of debris or oil.
    • Specific components such as crankshaft oil seals or valve stem oil seals may require lubrication during assembly.
    • Components requiring lubrication will be identified in the service procedure.
    • Apply only the amount of sealant specified in the service procedure to a component.
    • Do not allow the sealant to enter into any blind threaded holes, as the sealant may prevent the fastener from clamping properly or cause component damage when tightened.

       Note: Do not overtighten the fasteners.

    • Tighten the fasteners to the proper specifications.
   


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