Charge air cooler removal TAMD61A

[Murv]

Trying to get access to this as seawater is spraying out from somewhere. All the bolts seem insanely tight, before I risk damage, do I remove the bolts in a circular pattern around the stack, or the ones in the square pattern around the outside?
https://photos.app.goo.gl/4y1YKErd8wHe0qIJ2

 

[Murv]

https://photos.app.goo.gl/4y1YKErd8wHe0qIJ2

Dammit, can't seem to post pictures from my phone any more

 

[Fishtigua]

Murv,

Have a look right under the bugger, have been known to rot a bit there.

 

[Murv]

Thanks for that, Have now managed to remove the cap and the pipework and found a split o ring, just trying to work out how to get the core out now!

 

[Fishtigua]

Are they the big green ones?

http://www.marinepartseurope.com/en/volvo-penta-explodedview-7746650-26-706B.aspx

 

[oldgit]

Are they the big green ones?

http://www.marinepartseurope.com/en/volvo-penta-explodedview-7746650-26-706B.aspx

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Sealing ring[/TD]
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OW MUCH. got to be a generic "O" ring of some sort ?
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[Mr Googler]

Thanks for that, Have now managed to remove the cap and the pipework and found a split o ring, just trying to work out how to get the core out now!

http://moegster.no/inlet_exaust_cooling_system manual volvo_penta_tamd61a-72j-a.pdf

Page 28

 

[Murv]

Thanks all, it just says "lift out" which it seems very reluctant to do. I've snapped one of the bolts on the heat exchanger now, so will worry about that before commencing battle with the charge air cooler.

By the way OG, VSWR almost off the scale!

 

[superheat6k]

Green O rings are normally Viton, a PTFE base material.

If you measure as accurately as you can the ID, or OD and cross sectional diameter you can find standard sizing tables on line then once the size is known contact your local bearing suppliers for a price. Specify the required size in viton material. If the item isn't getting too hot (<110oC) then ordinary nitrile (NBR) will suffice, so for a charge air cooler this should be fine.

The alternative is to buy the o ring rubber by length and cut to suit, joining the ends with superglue, or better still have the joint vulcanised.

 

[Murv]

Thanks Trevor, at home on the laptop, I can see the replies clearly now... and the price of that Volvo part!!!

I'll certainly see if I can find a cheaper alternative then, that price is just ridiculous.

 

[omega2]

Now that you know how to do it, why not put the split o ring back into place and smarm with hylomar, it might work.

 

[Murv]

Now that you know how to do it, why not put the split o ring back into place and smarm with hylomar, it might work.

To be honest, I'm a bit nervous when it comes to seawater and engine inlets. I'm sure it would seal, but I'd be permanently worrying that seawater was seeping into the engine!

 

[omega2]

Same as when a sealing ring is fitted skew/whif.

 

[oldgit]

Thanks Trevor, at home on the laptop, I can see the replies clearly now... and the price of that Volvo part!!!

I'll certainly see if I can find a cheaper alternative then, that price is just ridiculous.

Chris if you bring it with you...will see if next door can source one . OG