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Mount thermos or lines first?

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
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TheOtherside
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Mount thermos or lines first?

Post by TheOtherside » Sun Apr 26, 2020 11:38 am

Still on my oil cooler lines.

Should I mount the oil thermostat first and then put the lines in, or put the lines in the thermostat and then mount it?

Thanks guys!!
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Re: Mount thermos or lines first?

Post by abscate » Sun Apr 26, 2020 11:52 am

Thermostat first,, unless you can 3D visualise well.

The lines have to sit in a fairly tight space so they have to sit right.
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Re: Mount thermos or lines first?

Post by TheOtherside » Sun Apr 26, 2020 2:42 pm

😅😅

Thanks!
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TheOtherside
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Re: Mount thermos or lines first?

Post by TheOtherside » Sun Apr 26, 2020 3:49 pm

Lines will not stay seated in thermostat....
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TheOtherside
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Re: Mount thermos or lines first?

Post by TheOtherside » Sun Apr 26, 2020 3:54 pm

They're not supposed to be loose, right?
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Re: Mount thermos or lines first?

Post by scot850 » Sun Apr 26, 2020 4:24 pm

Correct. Not loose. However, they are not really, really tight either. The plate that holds then in bows with age due to heat and pressure. If it has bowed, flatten it and fit it in reverse.

NOTE** Before fitting the thermostat, check the pipe 'O' ring seats and make sure they are clean. I had issues with the seals leaking twice after the dealer replaced them. Eventually had time to remove the whole thermostat and look at it. They told me to replace the pipes as it was obviously the issue. There was hardened carbonised oil in the recess where the 'O' rings seat and it meant each time they fitted new ones and forced them in they tore the new rings and leak started again. I carefully cleaned the surfaces trying to make sure I did not scratch them to remove the oil deposits. No more leaks.

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1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
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Re: Mount thermos or lines first?

Post by TheOtherside » Sun Apr 26, 2020 5:35 pm

Think I had the o rings switched!

Everything's back together.

Wish me luck!!!!
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Re: Mount thermos or lines first?

Post by TheOtherside » Mon Apr 27, 2020 11:39 am

Thermostat solid. Lines solid. Coolant solid.

Connections on the radiator leak like a mother [email protected]&er
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Re: Mount thermos or lines first?

Post by erikv11 » Mon Apr 27, 2020 1:21 pm

Did you replace the o-rings and sealing rings, or re-use the old ones?
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Re: Mount thermos or lines first?

Post by scot850 » Mon Apr 27, 2020 4:37 pm

Also make sure you attached the cages the correct way around. If you look carefully, if I recall correctly, there is a narrow end and a wider end on the cage. I had the same issue when I fitted them the wrong way around. The narrower end should be to the radiator or it lets the pipes sit too far out and oil will bypass the 'o' rings.

Neil.
2000 V70 R - still being an endless PITA
2006 XC70
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - New project and test bed - Sold

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