[alberg30] Cutlass Bearing Replacement & Zinc

[John Birch]

My reply is in Brackets to your questions.
John Birch, Sunstone

miabarchet at aol.com wrote:

> I am about to change my cutlass bearing and have a few questions I hope the
> group can answer.  I have read three (3) methods.
> 1. Remove prop and shaft, reach inside the bearing with a hacksaw blade and
> cut the bearing in two places to collapse the bearing.

> [DIFFICULT, could damage threads and coupling - part of bearing may break off
> and be stuck in - Not recommended]
>
> 2. Remove the set screws on the stem gland and tap out the bearing with a
> punch trough the water intake vents on the forward end of the gland.
> [Difficult, likely won't work could damage housing]
>
> 3. Remove Prop. Stem Gland set screws, and the bolts holding the stem gland
> to the Keel or deadwood. Then "unscrewing" the Gland. [YES]
>
> My first question is why the authors put unscrewing in "quotation" marks? [It
> is threaded on to stern tube, turn anti clock wise with large monkey wrench
> padded to avoid scarring soft bronze housing after removing the two hex bolts
> top and bottom]
> How difficult is it to "unscrew" the Stem Gland? [Not too hard, count turns to
> remove but mark housing top orientation position before starting]
> Do I have to be concerned about the shaft log turning when I unscrew the
> gland? [YES, have a partner hold stern tube with padded monkey wrench, (remove
> stuffing box and replace hose), marking the tube with tape ot paint to make
> sure it doesn't turn.]
> Does anyone know the dimensions of the cutlass bearing or have a West Marine
> or Boat US part #?
> Is a Gear Puller needed to remove the Prop? [ Pull the shaft ]
>
> In an unrelated issue, I do not have Zincs on my boat. Being in fresh water
> only 5 months a year this has not been a big problem but I know It should be
> addressed.
> So, please indulge me with a few more questions.
>
> There is no room on the prop shaft to add a zinc as the prop is right against
> (almost) the stem gland.  Has anyone used the pop nut with zinc attached? [YES,
> for a 7/8 shaft standard taper] If so do you know the stock #? [?]
>
> Would adding a shaft zinc inside the boat help or does it need to be
> submersed? [immersed]
>
> There has been much discussion about the rudder shoe. Would it be advisable
> or worthwhile to drill and tap a hole to mount a zinc to the rudder shoe and
> the stem gland? [?]
>
> Does anyone know where to attach zincs to an Atomic 4 and what type to use? [?]
>
> Thanks for any info you might be able to provide and my apologies for the
> number of questions. [ No problem, Good luck ]
>
> Jim Allocco
> Barchetta Mia #565
>
>
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