LRO: Re: Oil seal general question

From: Bruce D. Fowler (bf71iia@mint.net)
Date: Thu May 24 2001 - 20:41:08 EDT

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    -----Original Message-----
    From: SJH

    :I'm in the process of rebuilding a chain drive koenig winch and last
    :night startedlooking at reinstalling seals and bearings.
                               Chop
    : The chain case contains a couple of oil
    :seals, one for the dog clutch shifter shaft, and one for the input shaft
    :from the crank. These are simple cup shaped metal/rubber seals. Where
    :each of them fits, there appears to be enough room to double them up
    :because they are thinner than the original seals, but it looks as if when
    :I do this, there will be no space behind the seal. The inner of the two
    :oil seals will rest up against the case, inside the hole in which the
    :seals seat. Is it necessary to have a space behind the seals between the
    :seal and the housing? When I pulled the old seals, there was a space.
    : Is it a bad idea to double the seals up?

    Simon,

    I like you thought it would be a good idea to double up the inputshaft
    oil seal....
    Three years later when I needed to replace the chain ( yea, I should've
    done it then)
    I found the outer of the two seals dry cracked, This time I only put one
    in there.
    So, my guess is by the time the inner seal fails the outer one won't hold
    much hypoid back.

    Bruce F.



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