volvo tamd 41

[sterntube]

Hi all ,looking for advice on how to strip the heat exchanger on one of these engines, ihave salt deposits around one end of the heat exchanger and a small drip.Is it likely to need new seals or mabey just a clean ? easy job? Many thanks for any advice givin.

 

[oldgit]

Stone age and simple

the 40A on my boat is sort of similar,except it is square instead of round.The early VP heat exchangers are all a bit stone age technology which are dead easy to work on.You can buy a expensive loads -of -bits kit in advance,but would advise pulling apart and then deciding what you need.
There are a couple of sites on line showing exploded exchanger so no need to buy manual.
Took mine off and on to the workbench to make stuff easier,plus a digital camera snap shot as you dissemble makes it so much easier to put it all back together ,if your memory is anything like mine.
A nice coat of green paint makes it all look nice when reassembled,buy this from your local paint factor shop,a litre of virtually the same colour brushing paint will cost about the same as the weedy 10cc eyedropper sized can of proper VILVO paint.

 

[hlb]

Hi all ,looking for advice on how to strip the heat exchanger on one of these engines, ihave salt deposits around one end of the heat exchanger and a small drip.Is it likely to need new seals or mabey just a clean ? easy job? Many thanks for any advice givin.

You can just take the round end plates off and just poke through them with a rod. However it sounds like you have some electrolysis and anodes have not been replaced at some time. Recommended is new heat exchangers. But they are expensive. A good machine shop can do wonders.

Well they could and did 20 years ago, dunno now. Yer metal is just disintegrating.

Ask round your local machine shops, many will know a welder man, that can weld up holes in most anything. Dunno, worth a try.

 

[aquapower]

If you sort it out soon enough then you may get away with cleaning it up and re sealing it, there is only one end removable so not much to leak, very straight forward job, had to fit a new one a few months back and think it came to about £2500 with the new header tank conversion kit which most older ones will need.

 

[Andrew_Fanner]

If its the tube stack a radiator repair place may be able to help (Serk in these parts have been known to do stuff) or even, if you have a local model engineeer's miniature railway nearby cultivating a contact there who can make locomtive boilers, they are pretty similar.

 

[PaulGooch]

Seems like some are reading this differently to me. Sounds to me like the seal on the end of the exchanger is leaking, hence the drip and the salt deposits. If it was mine, i'd flush the raw water system with Rydlime first (will most likely make the leak worse), then take the end of the heat exchanger off, dismantle/final clean as necessary and refit with new seals.

Of course, if it all falls apart when you take the end off........ see above