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HansT



Member Since: 25 Dec 2012
Location: Mariefred
Posts: 173

Sweden 2004 Defender 110 Td5 SW Belize Green
Wrong cap?
Today when I topped up the expansion tank with coolant I noticed that the coolant cap was a bit odd. The o-ring on the cap has nothing to seal against in the tank - see picture.

Also when I squeezed the top hose you could hear air escaping through the cap.

I have not noticed this before and I have had the car now for a year and a half and I have topped up with coolant 3-4 times.

Is it the wrong cap or is something missing in the tank? I guess the engine is running too cold if the cap is not tight?

If it is wrong cap - what is the correct part No? My defender is TD5, MY 2004.


Click image to enlarge


Last edited by HansT on 26th Nov 2014 5:40pm. Edited 1 time in total
Post #374326 26th Nov 2014 4:48pm
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custom90



Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20376

United Kingdom 
Sorry I can't help you on the PN front but that cap certainly isn't right, the genuine one is black.
The TD5 and Puma are the same I think, certainly looks identical.
Post #374327 26th Nov 2014 4:50pm
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Fifth Horseman



Member Since: 08 Mar 2011
Location: Lanarkshire
Posts: 323

United Kingdom 2011 Defender 110 Puma 2.4 XS CSW Santorini Black
TD5 and TDCi indeed share the same cap PCD100160
Post #374331 26th Nov 2014 5:11pm
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driver9



Member Since: 15 Oct 2012
Location: Suffolk
Posts: 111

United Kingdom 2008 Defender 90 Puma 2.4 XS CSW Stornoway Grey
The colour of the cap is either yellow or black depending on the manufacturer. The one in the photo is not correct design. The part number is PCD100160.
Post #374332 26th Nov 2014 5:11pm
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custom90



Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20376

United Kingdom 
Yellow normally signifies Britpart. Shocked Blue Bearmach.
Neither would be of much interest to me.
Post #374333 26th Nov 2014 5:18pm
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michaelwl



Member Since: 19 Nov 2014
Location: Durban
Posts: 65

South Africa 2002 Defender 110 Td5 SW Alpine White
Genuine LR one is black PCD100160 2002 110 TD5 White
1981 S3 R6 Matt Green - Now used as game viewer
2013 Discovery 4 XS
Post #374340 26th Nov 2014 6:01pm
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HansT



Member Since: 25 Dec 2012
Location: Mariefred
Posts: 173

Sweden 2004 Defender 110 Td5 SW Belize Green
Thank you very much guys for this information. I will order the correct cap from one of the sponsors Thumbs Up

Do you think that fitting a correct cap will also improve the cab heating performance?
Post #374349 26th Nov 2014 6:33pm
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michaelwl



Member Since: 19 Nov 2014
Location: Durban
Posts: 65

South Africa 2002 Defender 110 Td5 SW Alpine White
What heating performance. Rolling with laughter Rolling with laughter 2002 110 TD5 White
1981 S3 R6 Matt Green - Now used as game viewer
2013 Discovery 4 XS
Post #374350 26th Nov 2014 6:35pm
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HansT



Member Since: 25 Dec 2012
Location: Mariefred
Posts: 173

Sweden 2004 Defender 110 Td5 SW Belize Green
I know that in Johannesburg you do not have to worry that much about cab heating but here in Sweden it is another matter Wink

I have fitted electrical block heater, electrical and diesel cab heaters and maybe it was enough to replace radiator cap Rolling Eyes
Post #374353 26th Nov 2014 6:46pm
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shaggydog



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

United Kingdom 1991 Defender 110 200 Tdi USW Arles Blue
Might be worth giving your Heater Matrix a good flush through with a hose and checking your heater control cables are set up properly.

Early defenders can have very good heaters- as long as they are set up and looked after properly. Running Restoration Thread http://www.defender2.net/forum/post323197.html#323197

Self confessed mileage hunter Very Happy
Post #374366 26th Nov 2014 7:03pm
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110MGD



Member Since: 17 Oct 2013
Location: Wear Valley
Posts: 153

2001 Defender 90 Td5 CSW Epsom Green
It hasn't been unknown for older caps seals to wither with age, and not form a seal around the top... I was thinking of cracked heads and allsorts due to overpressurizing etc etc. . So bought a new cap for about £6.00 - hundreds of miles have now been done, not even a dribble around the top! Job done! 2001 Td5 CSW (weekend and snow mobile) Plenty of lights, M/T tyres EGR delete, roofrack, swing away wheel carrier, snorkel.
2016 E220 CDI Night Edition Estate
2014 VW UP!
2x D3 and 1x D4 GONE
Post #374377 26th Nov 2014 7:16pm
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