Lost prop

E

ernesto1840

Member
Joined
Nov 20, 2007
RO Number
29006
Messages
15
I have a Dixie Craft 16' volvo aq130/180, this is the 2nd prop we lost, is there any thing I can do to help keep it from comeing off, I did check the prop before puting her in the water, dose lock tight help?
 
Are you installing the star washer or equivalent, which stops the nut from spinning off?
 
Are you using a torque wrench to tighten to Volvo specs?? ( Then of course using crown nut, locknut , cotter pin ,etc., whatever locking system that drive employs.) If cotter pin is involved , replace, don't reuse. Some mfgrs spec about 50 ft-lbs tightening but make sure you know what yours should be 'cause it can vary a lot.

**Update: FWIW- Just looked at an online manual for AQ 180/185/190's and they show a cone nut with bolt through the center, requiring 81 ft-lbs(that's a lot!) for the cone and 16 ft-lbs for the bolt . If no center bolt hole in the cone , there should be a folding washer against the spacer ring.

Also, the manual notes :** "Short hub props (folding washer & cone) will be changed to long hub props (plastic washer, cone and through-bolt). When installing long-hub propellers on older sterndrives the propshaft must be drilled and tapped for use of cone with center bolt." http://www.thestraycat.net/files/Volvo Penta Workshop Manual.pdf ( Check manual p.128/ pfd p.131 .)

Are they going "free range" when just put into reverse gear at higher than low idle?
 
Sandy & thank you for the manual I save it for furture use!

This a 1977 and it dose not have the bolt hole, I did rebult the boat (it was a mess) but the eng and sterindrive work!

we been useing it all year, we been going out on the lake 3 weekend out of 5.

Ernie
 
Ernie- I quoted that manual because it would eeem to indicate IF by any chance you have a somewhatnewer long-hub prop on there now and are still using the no-hole cone, it probably isn't going to retain the prop until the cone & propshaft are re-configured to use the center retaining bolt.

Do you use a torque wrench to tighten the cone nut? 81 ft-lbs is pretty specific.

You might want to keep a float with a long line and heavy sinker readily available onboard to mark where the prop comes off next time to aid a dive search and reduce new prop expenses.
 
Tie a line to it so you can recover it next time.

(sorry, skewed sense of humor today.)
 
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