3/8 clear tube, 12 inches long, Yanmar 3jH5E?

[Skylark]

I’ve just changed the oil on my Yanmar 3JH5E engine. I only do this once per year so not possible for me to remember tube sizes and so on. I use a 12v pump and I have a box of assorted tubes. It takes me a while to get the right combinations of tubes.

Cleaning up, I’ve found 12 inches of 3/8 tube on the right hand side of the engine bay, looking forward, lying on the bearers. It may have come from the box of assorted tubes but it looks suspiciously as though it’s come off some sort of atmosphere overflow/vent.

I’ve had a good look around the engine bay but nothing obvious. It doesn’t look like coolant, it’s not a battery vent.

Does anyone have this same engine and/or have any ideas for me to check?

Many thanks

 

[RichardS]

My Yanmar 3YM30s both have a tube like that fixed to the back end of the heat exchanger connected to the drain point spigot.

Richard

 

[VicS]

I’ve just changed the oil on my Yanmar 3JH5E engine. I only do this once per year so not possible for me to remember tube sizes and so on. I use a 12v pump and I have a box of assorted tubes. It takes me a while to get the right combinations of tubes.

Cleaning up, I’ve found 12 inches of 3/8 tube on the right hand side of the engine bay, looking forward, lying on the bearers. It may have come from the box of assorted tubes but it looks suspiciously as though it’s come off some sort of atmosphere overflow/vent.

I’ve had a good look around the engine bay but nothing obvious. It doesn’t look like coolant, it’s not a battery vent.

Does anyone have this same engine and/or have any ideas for me to check?

Many thanks

RHS viewed from which end. ?

Your right view from the front? .... coolant overflow ??????

 

[Skylark]

Thanks, Richard,

I’ve just looked and I have the same drain tube from my heat exchanger. It’s on the other side, though. However, your helpful comment gave me a big clue. I’ve now found it. It’s the engine block coolant drain. In my Bendytoy, it’s well hidden so I needed to curse a bit more for being able to reattached it.

 

[Skylark]

Thanks, VicS,

As you can see from my last post, I’ve now reattached it. It was RHS, starboard, looking towards the bow. Fuel and oil filter side, hence my problem.