Volvo prop nut question

[jluchuk]

I have a Larson 290 with twin Volvo DP-SM out drives. To change the outdrive fluid you have to remove the duo props to get at the drain screw. After change the fluid and putting the props back on I was concerned about what kept the prop nuts in place since there was no castle nut with a carter pin nor a locking washer. I have since found out that Volvo uses a nylock type nut for both the inner and outer nuts. The best price I can find for these Volvo prop nuts are $30 per nut or $120 for 2 each to replace them. Does anyone know approximately how many times you can take these on and off before they are considered worn out? I am worried that the nuts went on too easy and could spin off and lose a prop.

 

[steelespike]

Re: Volvo prop nut question

While this is surely a prop question I think it is also a I/O question
I don't think the moderators would object to posting in the I/O section.

 

[jluchuk]

Re: Volvo prop nut question

Sorry I moved this post to the propeller forum. I am still learning to use these forums.

 

[hansoloalaska]

Re: Volvo prop nut question

I personally would not trust a nylock nut on something as critical as that after its been used. I would either buy the volvo ones or look for some in McMaster Carr or somewhere else. Ive used nylock nuts on other applications and always put a new one on. Just my $.02.

 

[Randybeall]

Re: Volvo prop nut question

Perhaps a drop of blue Locktite in each of the nuts would be the insurance you need? That is an insane price for the nuts.

 

[a70eliminator]

Re: Volvo prop nut question

They are good for only so many cycles, I had a nylock nut on my go cart rear axle keep loostening up, I layed it flat down on the concrete and whacked it with a hammer a couple times right on the rounded shoulder where the nylon insert is, it swelled just enough and tightened it right up, but I still don't trust it 100%