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Landlord



Member Since: 27 Oct 2009
Location: Hampshire
Posts: 582
United Kingdom 2007 Defender 90 Td5 HT Cairns Blue
I'll take a photo of mine later showing the one way valve from the expansion tank 2007 TD5 90 Hard Top
Post #189154 28th Nov 2012 8:48am
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Martin
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Member Since: 02 Apr 2007
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United Kingdom 2015 Defender 90 Puma 2.2 XS CSW Montalcino Red
What's the theory behind the expansion tank one-way valve then chaps?  1988 90 Td5 NAS soft top
2015 D90 XS SW
Post #189191 28th Nov 2012 12:34pm
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Landlord



Member Since: 27 Oct 2009
Location: Hampshire
Posts: 582
United Kingdom 2007 Defender 90 Td5 HT Cairns Blue
Think it to do with the height of the Webasto in relation to the expansion tank. As the Webasto is installed quite high on the TD5 I presume there could be a chance of air traveling back down the top hose causing an air lock. 2007 TD5 90 Hard Top
Post #189196 28th Nov 2012 12:59pm
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Martin
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OK - but presumably it affects the designed operation of the header tank which should have free flow both ways through that pipe?  1988 90 Td5 NAS soft top
2015 D90 XS SW
Post #189197 28th Nov 2012 1:01pm
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Landlord



Member Since: 27 Oct 2009
Location: Hampshire
Posts: 582
United Kingdom 2007 Defender 90 Td5 HT Cairns Blue
I Could be way off mark but I think the small hose takes the expansion water from the system which is then fed back in through the larger hose at the bottom of the tank.


Click image to enlarge 2007 TD5 90 Hard Top
Post #189201 28th Nov 2012 1:17pm
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Phoenix90



Member Since: 04 Mar 2012
Location: Cornwall
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United Kingdom 2007 Defender 110 Puma 2.4 USW Stornoway Grey
Martin wrote:
OK - but presumably it affects the designed operation of the header tank which should have free flow both ways through that pipe?


Not sure about this, but I know when I put a Webasto in my TD5, until I put a one way valve on the expansion tank the pump on the Webasto would draw air into the coolant system causing no water to pump around and the Webasto to overheat and shutdown.
Post #189212 28th Nov 2012 2:25pm
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jst



Member Since: 14 Jan 2008
Location: Taunton
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2011 Defender 110 Puma 2.4 USW Stornoway Grey
i had one of these on my td5 header but not on the puma. why do you need it? Cheers

James
110 XS Utility
130 Puma Station wagon/camper (in the making)
90 Puma Hardtop
Post #189213 28th Nov 2012 2:27pm
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dgardel



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

Click image to enlarge

ITEM N° 3

Without check-valve, the expansion box coolant level go up (3 - 4 cm) when the engine is warmed up. With the valve the "problem" was gone.

On the original TD5 Land Rover Webasto KIT, the installation of the valve is MANDATORY!



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

IID Pro MV License

Last edited by dgardel on 28th Nov 2012 3:23pm. Edited 2 times in total
Post #189214 28th Nov 2012 2:33pm
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Martin
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Member Since: 02 Apr 2007
Location: Hook Norton
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United Kingdom 2015 Defender 90 Puma 2.2 XS CSW Montalcino Red
Thanks Daniele Bow down

Do you have the whole PDF for Td5 installation?  1988 90 Td5 NAS soft top
2015 D90 XS SW
Post #189215 28th Nov 2012 2:35pm
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jst



Member Since: 14 Jan 2008
Location: Taunton
Posts: 7700
2011 Defender 110 Puma 2.4 USW Stornoway Grey
Sorry for my last post, i hadnt seen the next page after BPMans post with all the pics etc of it.

ON my td5 i fitted one (a one way valve on the expansion tank).

On the puma i dont have one fitted and have no problems with it to date. Cheers

James
110 XS Utility
130 Puma Station wagon/camper (in the making)
90 Puma Hardtop
Post #189218 28th Nov 2012 2:45pm
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Martin
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Translation of German above:

Quote:
CAUTION!

When installing the non-return valve respect the forward direction!
  • Loosen the vehicle pipe (19/1) at the hose (19/4) connecting to the expansion tank.
  • Insert the check valve (19/3) in the hose (19/4) (the forward direction is from the engine to expansion tank) and secure with hose clamp
  • Attach the vehicle pipe (19/1) using a piece of tubing (19/2) and 2 hose clamps
  1988 90 Td5 NAS soft top
2015 D90 XS SW
Post #189224 28th Nov 2012 3:15pm
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dgardel



Member Since: 30 Nov 2008
Location: Veneto (Heart & Head)
Posts: 3586
Italy 
Martin wrote:
Thanks Daniele Bow down

Do you have the whole PDF for Td5 installation?



English (traslated from the french version)
https://www.defender2.net/gallery/albums/u...TD5_EN.pdf


French
https://www.defender2.net/gallery/albums/u...TD5_FR.pdf


German
https://www.defender2.net/gallery/albums/u...er_TD5.pdf Discovery 5 td6 HSE Stornoway Gray Outback Engineering Limited Edition

IID Pro MV License
Post #189225 28th Nov 2012 3:33pm
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Martin
Site Admin


Member Since: 02 Apr 2007
Location: Hook Norton
Posts: 6485
United Kingdom 2015 Defender 90 Puma 2.2 XS CSW Montalcino Red
Thanks Smile  1988 90 Td5 NAS soft top
2015 D90 XS SW
Post #189227 28th Nov 2012 3:37pm
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Landlord



Member Since: 27 Oct 2009
Location: Hampshire
Posts: 582
United Kingdom 2007 Defender 90 Td5 HT Cairns Blue
My FBH has stopped working Big Cry

Took the supply fuel pipe off the heater end and once the fuel pump starts a couple squirts come out and then nothing although the fuel pump can be heard clicking. Does this sound like fuel starvation and is there a fuel filter built in to the system ?

Have checked fuses etc but all ok. FBH stars running on demand but then shuts down after 3 minutes ? 2007 TD5 90 Hard Top
Post #197952 31st Dec 2012 8:34pm
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bpman



Member Since: 21 May 2008
Location: Oslo
Posts: 8069
2008 Defender 110 Puma 2.4 SVX Station Wagon Santorini Black
could be the fuel filter in the pump is blocked... you've been using non-BP fuel ?
Post #198553 3rd Jan 2013 8:06am
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