Hello Ron,
1. What are the torque values that you’ve used? 3/4" Keel Bolt (aft) takes a 1-1/8" Socket, Torque to 250 lbs. 1" Keel Bolt (forward) takes 1-1/2" Deep Socket, Torque to 350 lbs. 1 1/8" Keel Bolt takes 1-13/16" Socket, Torque to 400 lbs. 1 1/4" Keel Bolt takes 1-7/8" Socket, Torque to 450 lbs. 1 1/2" Keel Bolts take 2-1/4" Socket, Torque to 600 lbs. 2. Did you back off the nuts and lubricate? Yes, one at a time. Decrease torque values by 10 % We snick up on the final torque values in steps, doing all the bolts, then retourquing to a higher value, then repeat until you get to the final values listed above. 3. If so, what did you use for lubrication? We lubed them with Tef Gel. The function of Tef-Gel in eliminating seizing galling and friction welding of stainless steel, inconel, and other nickel alloys. Tef-Gel applied to both mating surfaces of nuts and bolts or threaded holes and bolts leaves a layer of 40% solid PTFE within the thread interface, which works as friction barrier. Tef-Gel, which contains 0% volatile solvents, will no evaporate, cold flow, or dry out, giving protection many years later when hardware must be dissembled. http://us.binnacle.com/product_info.php?products_id=8658 Ken H. On 26 April 2017 at 09:50, Ron Ricci via CnC-List <[email protected]> wrote: > A few months ago, there was a discussion of rust stains and weeps of water > appearing on the keel. My first thought had been that water from the bilge > leaked around the keel bolts when the boat is on the hard. I had the > boatyard do some exploration. They found a void in the keel that > apparently filled with water. The void appeared threaded and may have been > used to lift the keel. This all can be seen at: https://1drv.ms/f/s!AhpB- > lul9d5YpQkMDs5DeOkS73p2. Continued inspection found that there was no > water leaking down from the bilge. > > > > While my boat is out of the water with the mast out, I’m going to torque > the keel bolts. The C&C website lists torque values for ½” (80 ft-lbs), ¾” > (250 ft-lbs) and 1” (350 ft-lbs). The 37+ may have another larger size > bolt. I don’t know where these came from but found something similar > attributed to an employee of Mars Metal (keel manufacturer?). Can any > other owners confirm a few things? > > > > 1. What are the torque values that you’ve used? > > 2. Did you back off the nuts and lubricate? > > 3. If so, what did you use for lubrication? > > > > Regards, > > *Ron* > > Ron Ricci > > S/V Patriot > > C&C 37+ > > Bristol, RI > > [email protected] > > > > > > > > > > > > _______________________________________________ > > This list is supported by the generous donations of our members. If you > wish to make a contribution to offset our costs, please go to: > https://www.paypal.me/stumurray > > All Contributions are greatly appreciated! > >
_______________________________________________ This list is supported by the generous donations of our members. If you wish to make a contribution to offset our costs, please go to: https://www.paypal.me/stumurray All Contributions are greatly appreciated!
