tamd41a lower heat exchanger connector

colhel

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I've just re-fitted the heat exchanger.
There's a plastic connector underneath that transfers coolant from the engine to the heat exchanger which appears to be leaking, this is basically a plastic tube about 11/2" OD by about 4" long, one end pushes into a coolant outlet from the engine and the other is pushed into the heat exchanger and held in place once the H/E is secured in place. I've replaced both O rings and can't see how it can be mis-aligned with this arrangement. I've looked at a schematic for this part and can only see the 2 O rings. My assumption therefore is the bores need a good clean. Can anyone recomend what to use please?
Being that this tube is very close to the alternator belt and I've got restricted access to this area to actually try and see or feel for water is pretty impossible. Could the leak be coming from anywhere else?

Cheers
 

superheat6k

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Hi Colin. Did you use the original Volvo Penta green O rings. Simple I know but I found out the hard way not to use any other seals on these VP engines. Also a smear of Loctite 577 around the seal and the recess it sits in might work.
 

volvopaul

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I've just re-fitted the heat exchanger.
There's a plastic connector underneath that transfers coolant from the engine to the heat exchanger which appears to be leaking, this is basically a plastic tube about 11/2" OD by about 4" long, one end pushes into a coolant outlet from the engine and the other is pushed into the heat exchanger and held in place once the H/E is secured in place. I've replaced both O rings and can't see how it can be mis-aligned with this arrangement. I've looked at a schematic for this part and can only see the 2 O rings. My assumption therefore is the bores need a good clean. Can anyone recomend what to use please?
Being that this tube is very close to the alternator belt and I've got restricted access to this area to actually try and see or feel for water is pretty impossible. Could the leak be coming from anywhere else?

Cheers

Clean with a flap wheel in drill , could be that the pump is corroded I have a good second hand one if you need it .
 

colhel

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Hi Trevor. I bought the O rings as part of a heat exchanger seal kit from Re-Power Marine, I've just checked their website but it's not listed anymore.

Hi Paul, access is difficult even with heat exchanger off, but if I need to take it off again I will. Is there any cleaning agent that would help clean the bores out?
I don't think it's leaking from the water pump but am aware of spares availability on these engines. So maybe a spare would be worth having.
 
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