Camshaft oil seals 2.5L

Discussion in 'General Motoring' started by Ed P, Jun 22, 2005.

  1. Ed P

    Ed P Guest

    I am in the process of replacing my timing belt and water pump on my '96
    Legacy Outback 2.5L. I had intended to replace the camshaft oil seals
    as a precaution but whereas the Haynes manual says you can hold the cam
    sprockets with a pair of large channel-lock pliers while loosening the
    sprocket bolt it looks as if a special tool is needed.

    The cam sprockets appear to be plastic. All four have approx. a 2½" hex
    head molded into the face but on the driver's side the face of the
    sprocket is recessed so using pliers seems to be out of the question.
    The manual warns against trying to hold the sprocket with the timing belt.

    Does anyone have any experience with gettng the cam sprockets off?

    Ed P
    Ed P, Jun 22, 2005
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  2. Ed P

    ed Guest

    Careful!! You have the DOHC engine, if the valve spring tension rotates the
    cam when you remove the belt, it can bend valves, and you then have an
    expensive job on your hands. You need a locking tool that fits in the hex,
    and then you "unload" the spring tension on the cam with the tool, at which
    point you can remove the cams. On re-assembly, you need to load the cam, and
    lock it with the tool, and remove it only once the belt is back on and
    preventing the cams from moving independent of each other. Only one of the
    cams is loaded, you need to carefully follow the instructions in the service
    manual to avoid the "sinking feeling" syndrome (had in on several
    occassions, not a fun place to be!).
    Channel locks have no place in this repair, I don't think you could even
    hold the sproket tight enough to remove the bolt with them. Certainly a
    poor, poor procedure on Haynes part.

    Ed B
    ed, Jun 22, 2005
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  3. On my 2.2 W/ 5-manual I held engine rotation with a tool jammed into the flywheel teeth through the
    opening at the top of the housing, then loosened the cam sprocket bolts with just the timing belt
    holding them, but this might not work if the bolts are rusted in. I think most folks use a strap
    wrench to hold the sprockets. -Danny
    Danny Russell, Jun 22, 2005
  4. Ed P

    ed Guest

    This would work for loosening the sproket bolts, since you would be changing
    the belt, but you would not want to strain the new belt when tightening the
    bolts back on. Certainly, a strap wrench would be better.

    Ed B
    ed, Jun 22, 2005
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