Stuffing Box Nut Size

[The Dog House]

For a 1 inch shaft, are the packing nut and locking nut both 1 7/8 inches? I think they are but I'm looking for confirmation. Thanks for the info.

[larryeddington]

Have not measured mine but both are the same size, use an adjustable plumbing wrench, unless you thought as I to have a pair of wrenches cut out of sheet metal with shorter handles. When working on Vee drive would be easier.

[The Dog House]

I'm currently using adjustable wrenches, but since I have a V drive it is difficult. I'm thinking of buying short handled fixed wrenches and want to make sure I buy the correct sizes. I know the locking nut is 1 7/8 inches, so if they are the same size then the packing nut is also 1 7/8 inches. Thanks for the confirmation.

[larryeddington]

Well I measured mine the packing gland nut is 1 and 15/16 the jam nut is solid 2 inches. as big as they are a 2 inch wrench would fit both. That is assuming you have the same gland I do in my F28.

[larryeddington]

Well I measured mine the packing gland nut is 1 and 15/16 the jam nut is solid 2 inches. as big as they are a 2 inch wrench would fit both. That is assuming you have the same gland I do in my F28. I have two v drives and they are surly tough but was able to get them loose and tight with plumbing wrenches. You should not need a wrench except to hold the gland while tightening the jam nut. As I said earlier I may have someone plasma torch a short handled wrench that would fit much better.

[The Dog House]

What size is your prop shaft? A 1 inch and 1 1/8 inch prop shaft should have a 1 7/8 inch lock nut. If you have a shaft larger than 1 1/8 inches, a 2 inch lock nut would make sense.

[larryeddington]

Prop shaft 1 inch. Accorging to the Prowlerfish they used the same castings for different safts
Just bore different holes.

[prowlersfish]

Each casting is used in 1 or 2 shaft sizes I belive . 1"-1 1/8 takes 2" wrench ,1-1/4" takes 2-5/16 wrench 1 3/8 & 1.5 take 2-9/16 wrench ,1 3/4 & 2" takse a 3-1/4 wrench .Per Buck Algonquin . Both nuts should be the same .