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dgardel



Member Since: 30 Nov 2008
Location: Veneto (Heart & Head)
Posts: 3586

Italy 
Coolant expansion tank cap (IVECO vs. OEM)
I did not understand why the coolant level go 2-3 cm (1 inch aprox) under the MAX sign (half bowl) every time I "correct" it(no signs of leakage).

Also I feel that other people have the same problem, including TD5 ....

I thought it was a cap problem. I changed cap 4 or 5 times.

4 months ago, working on my "monster" (the Mi.G not my Defender) noted that the cap of the expansion tank IVECO might be fine. Control excess pressure from 1.0 to 1.2 bar, perfect !!!!

Restore the correct level at half bowl, I installed it and use the Defender during these four months to see what happen ...........


................ The coolant level has not dropped!!!!

P/N is IVECO 99489567


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Admin note: this post has had its images recovered from a money grabbing photo hosting site and reinstated Mr. Green  Discovery 5 td6 HSE Stornoway Gray Outback Engineering Limited Edition

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Post #508394 26th Feb 2016 10:27am
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shaggydog



Member Since: 12 Aug 2012
Location: Kent
Posts: 3347

United Kingdom 1991 Defender 110 200 Tdi USW Arles Blue
Where does the hose go?

Is it just a drain off? Running Restoration Thread http://www.defender2.net/forum/post323197.html#323197

Self confessed mileage hunter Very Happy
Post #508427 26th Feb 2016 12:53pm
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dgardel



Member Since: 30 Nov 2008
Location: Veneto (Heart & Head)
Posts: 3586

Italy 
Down to the ground Discovery 5 td6 HSE Stornoway Gray Outback Engineering Limited Edition

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Post #508453 26th Feb 2016 3:08pm
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gazman



Member Since: 17 Aug 2015
Location: Liverpool
Posts: 652

United Kingdom 2003 Defender 90 Td5 HT Alpine White
Good call. My td5 does exactly the same but stays at 2cm low and never moves 2014 - current ..... 2003 defender td5 90 (my car)
2009 - current .... 2005 zx10r
Post #508474 26th Feb 2016 6:15pm
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Supacat



Member Since: 16 Oct 2012
Location: West Yorkshire
Posts: 11018

United Kingdom 2013 Defender 110 Puma 2.2 XS DCPU Keswick Green
I'm not sure I see the issue - if the natural level is below the mark and remains constant?

If you fill to immediately below the overflow drain then it's bound to expand and loose some coolant, settling down when cold to a lower level.
Post #508506 26th Feb 2016 7:31pm
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dfilipu



Member Since: 06 Feb 2016
Location: Savoie
Posts: 5

France 2012 Defender 110 Puma 2.2 SW Alpine White
I have the same issue on my 2.2 puma ( 66000km now but the issue become at 42000km ). Land rover keep mine for 2 weeks along and never find an issue but level stay nearly 1 inch under the max lever to.
I really want know why. If it's better with IVECO parts I mount it. Tanks for the idea.
Post #508942 28th Feb 2016 9:23am
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Fatboy Slim



Member Since: 04 Feb 2008
Location: Bridgend
Posts: 1006

Wales 
Supacat wrote:
I'm not sure I see the issue - if the natural level is below the mark and remains constant?

If you fill to immediately below the overflow drain then it's bound to expand and loose some coolant, settling down when cold to a lower level.


My thoughts exactly
Post #508960 28th Feb 2016 10:33am
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dgardel



Member Since: 30 Nov 2008
Location: Veneto (Heart & Head)
Posts: 3586

Italy 
gazman wrote:
Good call. My td5 does exactly the same but stays at 2cm low and never moves


Rather it's the opposite.

If I rectify at the correct cold level, when the engine is warm the pressure dilates the rubber pipes (more than the thermal expansion of the liquid) and the level drops.

But when cold the coolant should return to the correct height.

This happens with the IVECO cap but not with that land rover one. Discovery 5 td6 HSE Stornoway Gray Outback Engineering Limited Edition

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Post #508973 28th Feb 2016 11:49am
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Phil VM2.5



Member Since: 28 Mar 2012
Location: Limelette
Posts: 196

Belgium 2012 Defender 110 Puma 2.2 SW Keswick Green
Hi,
Have the same with mine ...
But, I do not see mark of coolant along the bottle so not sure it will change something ...
But thanks for the idea I will try

Phil current : defender 110 sw 2.2 puma 2012 and 230.000km today and
again my Range Rover VM2.5 engine from 1992 and 528.000km today.

One ten 1988 to 1992
1987 BMW GS80
One Ten from 1984 to 1987
One Ten from 1983 to 1984
Serie 3 109 from 1980 to 1983
from 1974 Jeep CJ3B and CJ6
Post #509226 29th Feb 2016 11:07am
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MK



Member Since: 28 Aug 2008
Location: Santiago
Posts: 2415

Chile 2007 Defender 110 Puma 2.4 SW Chawton White
Is the issue on the rubber gasket or the valve? Puma 110" SW

.............................................................
Earth first. Other planets later
Post #752369 19th Jan 2019 2:44pm
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sherifsalem



Member Since: 02 Jan 2013
Location: Porto
Posts: 96

Portugal 2005 Defender 90 Td5 ST Java Black
Re: Coolant expansion tank cap (IVECO vs. OEM)
dgardel wrote:
I did not understand why the coolant level go 2-3 cm (1 inch aprox) under the MAX sign (half bowl) every time I "correct" it(no signs of leakage).

Also I feel that other people have the same problem, including TD5 ....

I thought it was a cap problem. I changed cap 4 or 5 times.

4 months ago, working on my "monster" (the Mi.G not my Defender) noted that the cap of the expansion tank IVECO might be fine. Control excess pressure from 1.0 to 1.2 bar, perfect !!!!

Restore the correct level at half bowl, I installed it and use the Defender during these four months to see what happen ...........


................ The coolant level has not dropped!!!!

P/N is IVECO 99489567


Click image to enlarge



Click image to enlarge



Click image to enlarge



Click image to enlarge


Admin note: this post has had its images recovered from a money grabbing photo hosting site and reinstated Mr. Green



Where i can buy this Cap please... Happy Travel
www.thegippo.wordpress.com
Post #794784 23rd Sep 2019 9:37pm
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LandRoverAnorak



Member Since: 17 Jul 2011
Location: Surrey
Posts: 11324

United Kingdom 
There's almost certainly somewhere closer to you, but I got mine from here:

www.vexi.co.uk/parts/iveco/view/I99489567/plug Darren

110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak

"You came in that thing? You're braver than I thought!" - Princess Leia
Post #794788 23rd Sep 2019 9:59pm
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sherifsalem



Member Since: 02 Jan 2013
Location: Porto
Posts: 96

Portugal 2005 Defender 90 Td5 ST Java Black
Hi gents

I bought the cap because I had the same experience with lower liquid level.

Infact opposite to the original cap that does not let the air in or out.


This Iveco cap, I can see that this cap does not compress the air inside the expansion tank like the original , the iveco cap has 2 way ventilation , is that the aim to be breathing in two way ?

Still have to source the tube !!!



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 Happy Travel
www.thegippo.wordpress.com
Post #799615 26th Oct 2019 2:11pm
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Yannis



Member Since: 02 Feb 2015
Location: Oxfordshire / Milan
Posts: 408

United Kingdom 2015 Defender 90 Puma 2.2 CSW Corris Grey
What size hose is needed for the drain off?

Also, typing in the part number to Google, there are many replica items. Has anyone brought a non genuine cap?
Post #861409 13th Oct 2020 4:58pm
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LandRoverAnorak



Member Since: 17 Jul 2011
Location: Surrey
Posts: 11324

United Kingdom 
Given the problem that it's solving and the cost involved, I can't really see the point in risking a copy, to be honest.

From memory, the pipe was 8mm but it's probably best to get one in your hands and check before buying. Darren

110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak

"You came in that thing? You're braver than I thought!" - Princess Leia
Post #861455 13th Oct 2020 8:12pm
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