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Coolant problem with Volvo D3

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AMAROO View Drop Down
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    Posted: 23 September 2015 at 08:54
The coolant is rising to the reservoir tank and expanding / overflowing , causing low coolant in the engine. I did hear of one case with another 575 whereby it was plumbed into the engine incorrectly when installed at the factory. 

We had the local volvo dealer come and look at it and they said the wrong type of cap was fitted, this has been changed and made no difference. 

Has any one had this problem / know the solution?


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Peter-Blake View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Peter-Blake Quote  Post ReplyReply Direct Link To This Post Posted: 23 September 2015 at 10:53
Maybe you have a airbubble in the cooling System !
I see the warmwaterboiler positioned above the motor. maybe the bubble is in the connection to it, as the airbubble may stay in the connecting tube.
Blake 370
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AMAROO View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote AMAROO Quote  Post ReplyReply Direct Link To This Post Posted: 23 September 2015 at 11:15
Any tips on how to bleed this out?
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Wayne's World View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Wayne's World Quote  Post ReplyReply Direct Link To This Post Posted: 23 September 2015 at 17:42
Amaroo,

On occasions we have the low coolant warning come on when the coolant in the header tank goes below the required level. We have had a leak from the header tank and have not yet been able to track it down. This job is on the winter list. What I find is if the coolant is within the hi/low readings on the header tank all is good. If the leak caused the coolant to go below the "low level" the coolant does not run back into the engine circuit as the engine cools and you then need to top up the header and open the "filler cap" on the engine and the coolant run back and tops up the engine RPM.
Wayne W
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bovine View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote bovine Quote  Post ReplyReply Direct Link To This Post Posted: 23 September 2015 at 23:23
Hi guys
Hot water is bigger than cold,so as the engine heats up the water expands into the header tank then as it cools its drawn back into the engine by vacume. If the water is not drawn back in its because you have a loose hose and air is being sucked in.
David
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marcopone View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote marcopone Quote  Post ReplyReply Direct Link To This Post Posted: 24 September 2015 at 10:58
Hallo,
 
I had exactly the same problem and I am glad to inform you that the solution is VERY simple :
 
you have to exchange the position of the 2 caps : the transparent expansion tank and the smaller tank on the motor itself
 
that's it !
 
on my boat after this the problem never occurred again
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marcopone View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote marcopone Quote  Post ReplyReply Direct Link To This Post Posted: 27 September 2015 at 20:46
dear Amaroo,

I checked the caps position on my boat.

The blind cap has to be on the engine expansion tank while the cap with the overpressure spring has to be on the upper transparent expansion tank.

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AMAROO View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote AMAROO Quote  Post ReplyReply Direct Link To This Post Posted: 11 July 2016 at 10:45
This problem was worked out in the end the top expansion tank was plumbed in wrong when the engine was installed at the factory. The issue was covered under warranty due to it being installation error. 

Edited by AMAROO - 11 July 2016 at 13:13
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Phoebus View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Phoebus Quote  Post ReplyReply Direct Link To This Post Posted: 15 May 2017 at 13:03
Hi Armaroo,
 

 

I have the same problem in my D3! Can you please tell me what the installation error was so I can fix it. as my mechanic cannot find a solution. At the end what you did to solve it?

 

 

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Phoebus Quote  Post ReplyReply Direct Link To This Post Posted: 16 May 2017 at 13:51
Caps on expansion tank and extra expansion tank are not the same but can someone tell me why by changing the caps the problem is solved?
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