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red zepplin



Member Since: 26 Mar 2015
Location: Never far from a brew (Lancashire)
Posts: 196

1998 Defender 90 300 Tdi HT Rioja Red
Thermostat bleed plug
Hi all i wanted to swop the rubbish plastic thermostat housing bleed plug for a brass one 5 minutes of a job :rolllaugh: the housing came off easily enough but despite my best efforts i cant get the old plug out the "nut" has completely rounded off now any body any ideas to get this :censored: thing off
Thanks in advance simon WHAT COULD POSSIBLY GO WRONG
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Post #697673 1st Apr 2018 4:47pm
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donmacn



Member Since: 06 Nov 2017
Location: Nth Scotland
Posts: 1829

I think that's a tricky one. You can cut it out, but you need to ba careful not to let the swarf into the cooling system.

If it was me I'd take the thermostat out first, then fill the housing with a rag, or paper towels, then cut it out carefully.

But the main reason I thought I'd post was to say 'be careful' of the brass plug. I fitted on a while ago, and trying to get it off recently was a real pain. I think it had to be cut off too. Donald

1994 Defender 300Tdi 110 SW - owned since 2002 - 230k miles and going strong
(The 'rolling restoration' or tinkering thread: http://www.defender2.net/forum/topic58538.html )
2000 Range Rover P38 4.0L V8

in the past..
RR classic - fitted with 200Tdi
1984 RR classic - V8 with ZF auto box
1993 Discovery 300Tdi

not to mention the minis and the Type 2 VW camper...
Post #697698 1st Apr 2018 5:35pm
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red zepplin



Member Since: 26 Mar 2015
Location: Never far from a brew (Lancashire)
Posts: 196

1998 Defender 90 300 Tdi HT Rioja Red
Thanks for that I'll bare in mind that when I for the brass one I already have the housing off so I'll clean it out properly before refittimg WHAT COULD POSSIBLY GO WRONG
My sky lantern petition
http://chng.it/HJXmZC47
Post #697708 1st Apr 2018 5:50pm
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donmacn



Member Since: 06 Nov 2017
Location: Nth Scotland
Posts: 1829

If the housing's off it's easy enough. Just be careful then that you don't cut into the threads in the housing. Donald

1994 Defender 300Tdi 110 SW - owned since 2002 - 230k miles and going strong
(The 'rolling restoration' or tinkering thread: http://www.defender2.net/forum/topic58538.html )
2000 Range Rover P38 4.0L V8

in the past..
RR classic - fitted with 200Tdi
1984 RR classic - V8 with ZF auto box
1993 Discovery 300Tdi

not to mention the minis and the Type 2 VW camper...
Post #697714 1st Apr 2018 5:57pm
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gethim73



Member Since: 11 Jul 2017
Location: Kent
Posts: 9

1995 Defender 110 300 Tdi CSW Orkney Grey
Hi just found this thread. I'm in the same boat!

Is the housing easy to get off?

The plastic plug seems to have been glued in. The only way I can see to get the stuck residue out is to remove the housing entirely and melt the crap out with a blow torch.
Post #917445 17th Aug 2021 5:51pm
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red zepplin



Member Since: 26 Mar 2015
Location: Never far from a brew (Lancashire)
Posts: 196

1998 Defender 90 300 Tdi HT Rioja Red
In the end I just bought a new housing and put a brass plug in it was worth it as it makes bleeding the cooling system a doddle (very important with thec300 tdi) best of luck simon WHAT COULD POSSIBLY GO WRONG
My sky lantern petition
http://chng.it/HJXmZC47
Post #917484 17th Aug 2021 9:09pm
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donmacn



Member Since: 06 Nov 2017
Location: Nth Scotland
Posts: 1829

And just to add to that, the housing "shouldn't" be hard to get off - but it's possible.

From memory it's the two bottom nuts that are the most awkward to access, but the top bolts go into the head and could gunk up.

And, having slagged off the brass plugs in an earlier post, the current one has been in for a few years and is behaving very well. Donald

1994 Defender 300Tdi 110 SW - owned since 2002 - 230k miles and going strong
(The 'rolling restoration' or tinkering thread: http://www.defender2.net/forum/topic58538.html )
2000 Range Rover P38 4.0L V8

in the past..
RR classic - fitted with 200Tdi
1984 RR classic - V8 with ZF auto box
1993 Discovery 300Tdi

not to mention the minis and the Type 2 VW camper...
Post #917486 17th Aug 2021 9:16pm
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