Prop Nut Torque Setting
 

When installing a prop, what torque setting should the nut be tightened to? Should it differ between drive/boat types or all be the same no matter what the outdrive? (This case being a MerCruiser 330 TRS)

Re: Prop Nut Torque Setting
 

Mercruiser lists torque,if memory serves me correctly at a minimum of 55 ft/lbs for Rubber hub props. Not sure about solids but I will look at the manuel when I get to work and post a better answer later this evening. Ed merc cert.#MI2256c

Re: Prop Nut Torque Setting
 

The Mercruiser service manuel lists the torque for a trs at 40 ft/lbs plus or minus five ft/lbs. that is in the back of manuel number 2 Ed

Re: Prop Nut Torque Setting
 

I for one would like to know who uses a torque wrench on their props!

Forever I have just tightened it down, holding a prop blade with one hand and then when it feels good, I tighten it more to get those tabs to line up. Then punch in the tabs and GO!
Kent

Re: Prop Nut Torque Setting
 

Well lets see I do it for a living everyday and it has been a long time since I did, but someone asked a queston and Ithought i would refresh my own memory. lol. Ed

Re: Prop Nut Torque Setting
 

When I worked as a marine tech we torqued everything, I spent way too much money on my Snap-On torque wrenches not to use them.

Re: Prop Nut Torque Setting
 

You torqued props down?

When your torque wrench went clicka-clicka, what did you do to align the punch down washer thingies?

Re: Prop Nut Torque Setting
 

Yep, torque to spec then TIGHTEN to the next alignment point for the tab washer, of course you have to use a ratchet to tighten to the next point becuase it's not good for the torque wrench to tighten past when it clicks. On anything but a bearing you tighten till it aligns, on a bearing you loosen till the next alignment point.

Re: Prop Nut Torque Setting
 

I`m with Kent / Mudball. You guys can say that you torque the prop nut, but I`d like to see you actually pull the ol` torque wrench out next time you install a prop. :D

At least now I know what the proper torque should be......