Front Crankshaft Seal

Discussion in 'General Motoring' started by Jasper, Jan 8, 2006.

  1. Jasper

    Jasper Guest

    Can someone please provide detail directions from their experience of
    replacing the oil seal round the front of the crankshaft on a 1992 1.5

    Jasper, Jan 8, 2006
  2. Jasper

    Elle Guest

    A regular named "Eric" gave me very good help with this in
    2004 for my 1991 1.5L Civic. Jim Beam also had a few hints.
    The link below takes you to disussions of this. They mention
    the camshaft a lot, but I used the same approach for both
    camshaft seal and crankshaft seal. Summarized:

    Once you have the seal exposed, I recommend using a
    corkscrew and/or old-fashioned can opener to dig into the
    rubber of the seal and twist it out. Be very careful not to
    scratch or dent the metal in which the seal sits.

    Studying the new seal helps IMO, so you'll know into what
    you're trying to "hook" with your corkscrew and can opener.

    Removing the old seal:

    Installing the new one (see Eric's June 9 post):

    If you need assistance getting the pulley bolt off, ask.
    There's plenty of help in this group's archive for this.
    Elle, Jan 8, 2006
  3. I would add to Elle's fine directions that the seal has to be worked out in
    a round-robin fashion. It isn't very tight, but it needs a bit of coaxing.
    As she says, take care not to scratch the crankshaft or block. Scratches can
    be filled, but you really don't want to go that way.

    I assume you will take advantage of the opportunity to replace the timing
    belt and maybe the water pump (depending on how long it's been)?

    Michael Pardee, Jan 8, 2006
  4. Jasper

    Jasper Guest

    I have 20K mi on the pump and belt. The seal began leaking 1 year ago (10K
    ago). It would probaly be wise to replace the timing belt and seal at the
    same time. Thank you
    Jasper, Jan 8, 2006
  5. Jasper

    jim beam Guest

    replacing that seal is fine & dandy, but here's a couple of things to

    1. some oils cause seals to leak, some don't. using a good oil may
    completely eliminate your need to replace [google for my experience with
    motorcraft oil].

    2. if you're going to replace seals, the real priority is the main seal
    on the flywheel end. that has to deal with a much higher relative speed
    than the pulley end and therefore has a much harder time sealing. and
    if it's leaking, it's real messy, can affect the clutch, etc.

    bottom line, people do the pulley end seal mainly because they can get
    at it. and let's face it, it's one more thing to sell the customer.
    regarding your needs, if it really is leaking, while the main seal is
    not, go ahead and replace. BUT, if using a decent oil can address the
    underlying cause, i think that's a better way to go because you're also
    dealing with the other little things like the distributor seal [only
    "replaceable" by swapping out the whole distributor body for $270-odd
    bucks], etc. and scratching the sealing surface on the crank is a real

    have fun!
    jim beam, Jan 8, 2006
  6. Jasper

    jim beam Guest

    and a question: what oil are you using now?
    jim beam, Jan 8, 2006
  7. Jasper

    Jasper Guest

    Jasper, Jan 9, 2006
  8. Jasper

    jim beam Guest

    brand. what brand.
    jim beam, Jan 9, 2006
  9. jim, i don't question your wisdom for a second, but please explain how one
    end of the crank spins faster than the other (why is it more important to do
    the flywheel side versus the pulley side)? or am i reading cross-eyed? :)


    T L via, Jan 9, 2006
  10. Jasper

    Eric Guest

    They don't. Both ends spin at the same rate. However, if you compare the
    seal journals on the crankshaft, then you should note that the rear main
    seal has a larger diameter than the front crank seal. Thus, with a larger
    diameter, the rear main seal will experience a faster speed where the metal
    seal journal contacts the rubber seal lip. It's still the same rpm but a
    point on the larger diameter journal must travel faster in order to cover a
    larger distance in the same amount of time.

    Eric, Jan 9, 2006
  11. Jasper

    Jasper Guest

    Valvoline MaxLife
    Jasper, Jan 10, 2006
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