Prop shaft removal, pull rudder?

Discussion in 'Gas Engines/Drives/Transmissions/Props' started by markrsimon, Jan 13, 2021.

  1. markrsimon

    markrsimon Active Member

    149
    Sep 1, 2018
    Cleveland, OH
    92 Sea Ray 400 Express
    454 Mercruiser
    '92 400 Express
    Do I have to pull the rudders to get the shafts out? It appears on some newer boats, the rudder is offset -- however on mine, its seems dead center. Looking for insight before I make my next move.

    Prop Shaft Removal.jpg
     
  2. Strecker25

    Strecker25 Well-Known Member SILVER Sponsor

    Nov 20, 2014
    Rochester, NY
    2002 410DA
    Caterpillar 350HP 3126
    the picture makes it look like you do, out 2002 is offset. Why are you removing, to do the cutless?
     
  3. Soulshine

    Soulshine Well-Known Member GOLD Sponsor

    710
    Sep 25, 2016
    Seneca Lake, NY
    '83 SRV 360 Express
    Twin Merc. 454
    I sure does look that way. :(

    Not very considerate engineering if true.

    I’d turn them while eyeballing for clearance. I have a friend with an older Chris Craft that thought the same thing but there was clearance at a certain rudder angle.

    The leading edge of the rudder had a dog leg shape that allowed removal...barely.
     
  4. LMBoat

    LMBoat Member

    478
    Oct 4, 2006
    Ft Lauderdale
    1999 450 EB
    Cummins 6CTA's
    What it you turn the rudders fully to port or strb? I can't tell from the pics, but sometimes rudder are cut in a way that when turned there is clearance for prop shaft removal.
     
  5. hughespat57

    hughespat57 Active Member

    227
    Sep 25, 2016
    Rock Hill, SC
    300 Sundancer 1994, trailered tri-axle LoadRite roller
    Mercruiser 5.7 260HP Alpha One Gen II, twin
    Sometimes you just have to try...

    It only needs to barely clear
     
  6. markrsimon

    markrsimon Active Member

    149
    Sep 1, 2018
    Cleveland, OH
    92 Sea Ray 400 Express
    454 Mercruiser
    Played around with it a bit -- and best case, the rudder needs to be perfectly straight. I also pulled the stuffing box out, which allows a bit of FWD play. Given the taper on the end of the shaft for the prop, I'm able to start squeaking it by the rudder, taking off a few layers of paint along the way. After maybe 6" it binds pretty good, and I have another 6-8" to go before it clear the stern tube - which would give me more play. I'm sure I could scratch things up and remove it, but the re-installation has me concerned. Dropping the rudders shouldn't be that bad given where I'm at -- I was just trying to avoid it if I could.

    As for why -- the stuffing boxes are original (92 era), and don't turn freely at all. I need to get them off the boat to clean them up. Given the props have been sent out, and the cutlass bearing are pulled (to be replaced as well) -- figured it was just a simple step to pull the shaft and have that checked out too. Shaft coupler has already been removed.

    Am I missing anything else maintenance wise while I'm this far in?
    Props (sent out)
    Shaft (will have it checked)
    Cutlass Bearings (worn out, being replaced)
    Stuffing box overhaul (or perhaps PSS seals)
    Shaft Coupler (its solid, can I reuse or buy new)
    Alignment​
     

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