I had some seepage last year around the two front keelbolts. I
decided that before I start working on the keel I would address
this problem. I was limited by time and temperature (>50 deg.
F) so I would only do the ones that were leaking and not all of
them. After reading all the postings in the Yahoo group with
respect to keelbolts I was pretty confident I knew what to do.
| Bolt Removal |
This photo shows the rust stains and the
markings on the bolt that indicate it's strenght. It also
provided me a reference when tightening the bolt to see
it's final position compared to the original position. I
did make some markings on the bilge but those got cleaned
off when I removed the rust stains. I was prepared for
the fight of my life to remove the bolt but it came off
pretty easily. I used a regular ratchet with a 1 foot
pipe on the end of the handle for added leverage. I had
to pull hard but not brain-vein popping hard. Maybe I
don't know my own strength.
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Two markings mean 50ft-lb torque
max rating for 408 SS
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| Here
you can see that the old caulk is crumbly. It looks to me
that this is the first time they are removed. |
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Bolt removed showing old caulk
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All the keelbolts in a T22 go right through
the keel. Here you can see some minor rust but the
threads are OK. The water may have been coming in through
the hole or through the hull/keel joint.
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Minor rust
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The bolt looks to be in good shape. All the
old caulk was cleaned off.
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Keel bolt looks OK, rust stains on
caulk
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I wrapped the lower part of the bolt with
teflon tape to provide a better seal. This also shows the
caulk cleaned out from the hole. I used shovel, rakes,
and implements of destruction.
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Cleaned out old caulk, teflon tape
on threads going through keel
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| Bolt Installation |
I used 3M 4200 caulk to fill the hole. I put
a plastic straw at the end of the caulk gun so I could
squirt caulk into the space between the keel and hull.
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Forced caulk into gap between hull
and keel
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Caulk was added around the top of the bolt
to fill the hole.
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Put more caulk on bolt before
screwing it back in
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I installed the bolt and torqued it down
about the same as when I removed it. The bolt went about
a quarter of a turn further than the original position.
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Bolt back in, turned 1/4 turn
tighter than original position
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The excess caulk was cleaned up. Looks much
better without the rust there!
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Two front bolts reinstalled
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I had to grind the bolt end down but this
was pretty easy.
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Grind down to make flush with keel
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Prolog: This was a pretty easy project and I wish I had done
all the other bolts. If I do it next year I will have to touch up
with POR, epoxy and bottom paint. Given the rain we had and the
delay in launching I would have had time. Sounds like another
Mobyism:
After lauch this year the front two bolts did not weep!!
Horay! However, now some of the other bolts showed weeping. This
however mysteriously stopped after about two weeks in the water.
I WILL do all the other bolts next spring.