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Author Topic: Radiator Thermo Switches  (Read 3123 times)

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amba

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Radiator Thermo Switches
« on: 24 July 2018, 21:22:53 »
After a productive afternoon with the coolant pressure tester I have now managed to trace the coolant leak which I thought was originally the aux electric pump..but now is certainly the plastic edge of the radiator at the bottom.

Question I have is when the new rad is fitted is it necessary to replace any seals on both the 2 thermos switches,as cant see any point in replacing either as fans etc work fine..its just rad that has worn .

Can I re-anneal the copper washers assuming that's how they are sealed or should seals be replaced...if so where can these be sourced
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Andy B

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Re: Radiator Thermo Switches
« Reply #1 on: 24 July 2018, 21:35:52 »
It's been a whole since I replaced a rad on an Omega, but when I did, I reused the original switches with no problems at all. Can't remember if they were copper or fibre washers, but whatever, they sealed OK on the new rad.  :y
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amba

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Re: Radiator Thermo Switches
« Reply #2 on: 24 July 2018, 21:43:46 »
That's what I,m hoping for but want to be fully prepared especially as the bottom 1 looks a right pita to remove and reseal once rad is fitted.

Might just give the metal switch threads a smear of liquid ptfe to be on the safe side
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Bigron

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Re: Radiator Thermo Switches
« Reply #3 on: 24 July 2018, 21:45:43 »
Liquid PTFE - wassat?

Ron.
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Doctor Gollum

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Re: Radiator Thermo Switches
« Reply #4 on: 24 July 2018, 21:56:30 »
Quote from: amba on 24 July 2018, 21:43:46
That's what I,m hoping for but want to be fully prepared especially as the bottom 1 looks a right pita to remove and reseal once rad is fitted.

Might just give the metal switch threads a smear of liquid ptfe to be on the safe side
Why make life sooo difficult ???

Simply swap them over whilst the radiator is out ::)
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amba

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Re: Radiator Thermo Switches
« Reply #5 on: 24 July 2018, 23:03:07 »
Never intended trying to fit them with rad in place.

Question was when I replace old radiator with new all hoses and switches will be removed from old rad to new ...wanted to ensure the seal on the old switches was sound when replaced ... :y
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Doctor Gollum

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Re: Radiator Thermo Switches
« Reply #6 on: 24 July 2018, 23:29:33 »
Best tighten them fully then :D
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Doctor Gollum

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Re: Radiator Thermo Switches
« Reply #7 on: 25 July 2018, 03:16:21 »
Quote from: Doctor Gollum on 24 July 2018, 23:29:33
Best tighten them fully then :D
That's to say reusing the seals, if sound, is fine... If the car is a keeper, new sensor/thermoswitches are peanuts... So buy and fit new and forget about it :y
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amba

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Re: Radiator Thermo Switches
« Reply #8 on: 25 July 2018, 08:00:52 »
Peanuts it is then . ;D..car is not going anytime soon..Europarts here I come ::)
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Doctor Gollum

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Re: Radiator Thermo Switches
« Reply #9 on: 25 July 2018, 08:08:48 »
Last ones I bought were around a tenner ;)
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amba

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Re: Radiator Thermo Switches
« Reply #10 on: 25 July 2018, 08:49:16 »
Just trying to find somebody local who stocks them...Febi list just the seal ring 03083 but even though its pennies to buy on line postage for 2 small copper washers is over £12  >:(..not paying that to anybody
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terry paget

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Re: Radiator Thermo Switches
« Reply #11 on: 25 July 2018, 09:32:23 »
Never had a failure in running 6 Omegas for 12 years. However, had one fail on my Rover Streetwise, causing a boiling at MOT time.
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amba

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Re: Radiator Thermo Switches
« Reply #12 on: 25 July 2018, 10:05:02 »
Fully expecting old switches to come out fine...washers to be just slightly crushed..put back into new rad without any further issues...….but like to have all bases covered for the sake of a few £,s :y
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Doctor Gollum

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Re: Radiator Thermo Switches
« Reply #13 on: 25 July 2018, 11:04:33 »
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Nick W

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Re: Radiator Thermo Switches
« Reply #14 on: 25 July 2018, 11:07:05 »
Quote from: amba on 25 July 2018, 10:05:02
Fully expecting old switches to come out fine...washers to be just slightly crushed..put back into new rad without any further issues.


That's what I did. It's likely to be the only time they'll ever be moved.
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