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#569542 - 10/29/17 09:27 PM Volvo penta 5.0 tstat o ring lost  
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wijeff Offline
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wijeff  Offline
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South east wisconsin
Huston we have a problem . I was removing my t stat to winterizing the boat and found that the o ring that holds and seal the thermostat in place is gone when opening of the tstat housing . Any Input as to where it went or how to find it thanks

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#569544 - 10/30/17 05:42 AM Re: Volvo penta 5.0 tstat o ring lost [Re: wijeff]  
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tpenfield Offline
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Cape Cod, MA
Not really any place for it to go, if it is intact . . . if it came apart, then it went down through the recirculating pump and into the engine block. As to where it went from there idn

Just get a new one.


Regards, Ted

Formula 330SS

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#569547 - 10/30/17 08:06 PM Re: Volvo penta 5.0 tstat o ring lost [Re: wijeff]  
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wijeff Offline
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wijeff  Offline
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South east wisconsin
I would guess that is still in one piece as I think it was installed incorrectly and is stuck in the motor some where going to search with a flexible camara only 10 hours of use since tstat was installed

#569551 - 10/31/17 06:04 AM Re: Volvo penta 5.0 tstat o ring lost [Re: wijeff]  
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tpenfield Offline
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If the o-ring (item #4 ) was installed on 'top' of the thermostat instead of under it as per the illustration, then its next stop would be through the large hose (item #17) and to the recirculating pump. From there it is hard to say if it would have made it into the engine block.

[Linked Image]


Regards, Ted

Formula 330SS

My Boat Web Sites
#569552 - 10/31/17 07:51 AM Re: Volvo penta 5.0 tstat o ring lost [Re: tpenfield]  
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wijeff Offline
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wijeff  Offline
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South east wisconsin
Originally Posted by tpenfield

If the o-ring (item #4 ) was installed on 'top' of the thermostat instead of under it as per the illustration, then its next stop would be through the large hose (item #17) and to the recirculating pump. From there it is hard to say if it would have made it into the engine block.

[Linked Image]

I am hopeful that with the flexible scope camera I will have luck with finding it just don't like having the orings inside and not knowing what will hang up on it thanks for the pic my impeller pump is a bit different from the pic but it still has helped me thank you as I will post my results in the retrieval and finding of the O-ring thanks again

#569553 - 10/31/17 08:13 AM Re: Volvo penta 5.0 tstat o ring lost [Re: wijeff]  
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tpenfield Offline
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Cape Cod, MA
That is the recirculating pump in the picture, which is the upper pulley on the engine. Not knowing for sure, but you should have a 'sea water pump' (impeller) on the lower pulley that is mounted to the crankshaft /balancer.


Regards, Ted

Formula 330SS

My Boat Web Sites
#569557 - 10/31/17 12:36 PM Re: Volvo penta 5.0 tstat o ring lost [Re: wijeff]  
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Pasco, WA
Ted, what a great response to his question. This is part of what makes BABC a great place to hang out.

Mike


"Beachcomber" 1995 Sea Ray 550 Sedan Bridge


Anchor's down......Bottoms Up!
#569558 - 10/31/17 01:47 PM Re: Volvo penta 5.0 tstat o ring lost [Re: wijeff]  
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Boise, ID
Did the thermostat just fall out when you took it apart? The oring sits in a channel and can be hard to see. I will say that I did some damage to my housing thinking that the oring had hardened with age. A stupid moment for me.


James
2002 Cobalt 226 VP 8.1GIDP
2007 Chevy 2500HD Crew Cab Duramax
1988 Suburban 3/4 Ton
2000 Subaru Forester


#569565 - 10/31/17 08:17 PM Re: Volvo penta 5.0 tstat o ring lost [Re: Silverbullet]  
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wijeff Offline
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wijeff  Offline
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South east wisconsin
Originally Posted by Silverbullet
Did the thermostat just fall out when you took it apart? The oring sits in a channel and can be hard to see. I will say that I did some damage to my housing thinking that the oring had hardened with age. A stupid moment for me.

Yes it was sitting on the intake the orings was installed after the thermostat was put in as a retainer but it wasn't seated properly is my gas the thermostat was just sitting loose underneath the thermostat housing on top of the intake the knowledge of this group is outstanding thanks everyone for your input you all are ausom thanks

#569566 - 10/31/17 08:53 PM Re: Volvo penta 5.0 tstat o ring lost [Re: wijeff]  
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wijeff Offline
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wijeff  Offline
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South east wisconsin
I used scope camera and found nothing other than that the motor is very clean inside I went in through the manifold under the thermostat housing up to the head ports. Look at the exuast manifolds inside . Also looked in sparkplug hole cylinder looked like new . I bought this product from ebay 15.00 plugs into phone or tablet . It Is 6ft long and has a light on end will come in handy at times . Hope can help everyone else as much as you have helped me thanks again to everyone.

#569569 - 11/01/17 06:09 AM Re: Volvo penta 5.0 tstat o ring lost [Re: wijeff]  
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tpenfield Offline
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Cape Cod, MA
Originally Posted by wijeff
I used scope camera and found nothing other than that the motor is very clean inside I went in through the manifold under the thermostat housing up to the head ports. Look at the exuast manifolds inside . Also looked in sparkplug hole cylinder looked like new . I bought this product from ebay 15.00 plugs into phone or tablet . It Is 6ft long and has a light on end will come in handy at times . Hope can help everyone else as much as you have helped me thanks again to everyone.


Sounds like you gave your engine a colonoscopy followed by and endoscopy smile


Regards, Ted

Formula 330SS

My Boat Web Sites
#569580 - 11/01/17 06:33 PM Re: Volvo penta 5.0 tstat o ring lost [Re: tpenfield]  
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wijeff Offline
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wijeff  Offline
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South east wisconsin
That about sums it up lol

#569581 - 11/01/17 07:53 PM Re: Volvo penta 5.0 tstat o ring lost [Re: wijeff]  
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