The torques listed are for clean, dry threads. If you lubricate the
threads, reduce the torque by 10%.
1983 C&C 35-3, #028
"Grace"
Whitehall, Michigan
On 1/2/2018 3:18 PM, Josh Muckley via CnC-List wrote:
Ok Guys,
Since I have the mast out, this provides the rare opportunity to
access ALL of the keel bolts. I've measured each of the bolt and nut
diameters and checked the archives for torque specs. I intend to buy
a toque multiplier and the appropriate sized sockets. I think I can
do it for less than the yard is going to charge and I'll come out of
it with some tools. I'll also be able to tell myself that it was done
correctly.
That being said it sounds like the best practices are are follows:
- be on the hard
- loosen the bolts one at a time, clean, and lubricate with tef-gel
- reinstall and torque at progressively higher levels.
I was unable to find the torque spec for my 1.5" bolt in the website
but Ken Heaton cited 600lbs in one of his past responses.
Keel bolts (fwd to aft):
Nut stud torque
1 - 1 1/2 (38mm) 1 (25mm) 350
2 - 2 3/16 (56mm) 1 1/2 (38mm) 600?
3 - 2 3/16 (56mm) 1 1/2 (38mm) 600?
4 - 2 3/16 (56mm) 1 1/2 (38mm) 600?
5 - 1 7/8 (47.5mm)1 1/4 (32mm) 450
6 - 2 3/16 (56mm) 1 1/2 (38mm) 600?
7 - 1 1/2 (38mm) 1 (25mm) 350
8 - 3/4 (19.5mm) 1/2 (13mm) 80
_*Anything I'm missing?*_
_*
*_
_*
*_
Thanks,
Josh Muckley
S/V Sea Hawk
1989 C&C 37+
Solomons, MD
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_______________________________________________
Thanks everyone for supporting this list with your contributions. Each and
every one is greatly appreciated. If you want to support the list - use PayPal
to send contribution -- https://www.paypal.me/stumurray
