Volvo duoprop

[PJWENNING]

This year I bought a new to me 2008 cobalt 252 with a Volvo 8.1 GI-J.:.I left lake george this year with a blueing where the two props come together on the shaft.. The props came off fairly easy with a decent amount of grease still left on the shaft and no obvious issues with the shaft itself.. The duoprop had obviously wear on the hub where the blueing occurred and was looking
for any insight as to the cause of the wear and blueing… I’m fairly concerned that this amount of heat still occurred while in 70 degree water.. Thanks

 

[Scott Danforth]

Props are rubbing on each other. Are you missing hardware between the props?

 

[PJWENNING]

No idea that’s why I’m asking when I took it aPart I ended up with one forward prop nut one rear prop nut two props .. lol

 

[alldodge]

Each prop has a thrust washers on the shaft. Is there 2 washers?

 

[PJWENNING]

Each prop has a thrust washers on the shaft. Is there 2 washers?

Not that I know of..The only things I took off is what was previously mentioned.. the forward prop actually started to score in to the Aft prop

 

[alldodge]

Fwd washer
https://www.getaprop.com/volvo-abc-front-thrust-washer-3858457

Rear washer
https://www.getaprop.com/volvo-abc-rear-thrust-washer-3858458

 

[PJWENNING]

I assume that the props are in bad enough shape that they should be replaced or should this remedy my issues

 

[alldodge]

This hould fix the issue. Dont know which one your missing but think its the front

 

[PJWENNING]

Do you know if I was to order new Volvo props if those thrust washers came as well?

 

[PJWENNING]

Do you know if I was to order new Volvo props if those thrust washers came as well

 

[PJWENNING]

So I got a few part #s and the two prop numbers are 3851466 and 1851476 both are f6 7K don’t know if this helps at all as most diagrams I’ve seen don’t typically have a thrust washer?

 

[alldodge]

No expert with VP, but thrust washers don't normally come with any prop

 

[Scott Danforth]

Your props are fine. Buy the washers

 

[Nashville]

So I got a few part #s and the two prop numbers are 3851466 and 1851476 both are f6 7K don’t know if this helps at all as most diagrams I’ve seen don’t typically have a thrust washer?

Please check the part number that begins with 185… and repost (better, post a picture of that prop with the engraved markings visible). 185… is not correct. This should be an F6 set with straight splines on a DPS-A drive. No thrust washers on this series like the 280/290’s. Please post a picture of both nuts. It’s possible the inner nut is incorrect, a shaft is floating, the hub slipped, one was under torqued or one wickedly over torqued. Cause remains to be determined. Thank you.

 

[alldodge]

No thrust washers on this series like the 280/290’s.

Thanks for clarifying Nash
Have props with not thrust washers

 

[PJWENNING]

I was able to hopefully get a. Few better pictures of the engraving and heating..The 2nd and 3rd show the ring it’s starting to create the 4th shows the opposite side the others show where it is also creating some sort of friction Finalized by the 2 nuts I took off..Thank you everyone

 

[Nashville]

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I was able to hopefully get a. Few better pictures of the engraving and heating..The 2nd and 3rd show the ring it’s starting to create the 4th shows the opposite side the others show where it is also creating some sort of friction Finalized by the 2 nuts I took off..Thank you everyone

Thank you. Looks like contact on the face of the front nut (larger of the two props). A few initial matters to look at. (1) The nylon insert seems to have a gap between it and the I.D. based on the new picture of the smaller of the two props. It might be the picture though. So, please inspect. There’s a machined taper, but should be no gap. (2) Since the props are off the drive, grab the inner shaft and move it laterally and then in/out. Do the same with outer shaft. Let us know what you find. There should be near zero movement (a couple thousandths). It’s best to use a dial indicator, but if you don’t have one, do your best and see if there’s gross movement. (3) Look at the drive and see if there’s wear on the housing at the root.