shaunsmith
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is there anyway of changing the oil in a viscous coupling
viscous coupling
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what oil?
I think its actaully asilicon gel shaun.
but a good question non th e less. anyone now exactly what it is. Maybe there's a short term fix if someone knows.
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it is
snot a good Q - its an old Q.
No there isnt - its been discussed ad nausiam.
do a search.
G-man
BBQ king
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there is a long term fix for this problem its called buy a defender
Northern Irelander
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I contacted the manufacturers of the silicone fluid, there are two distributors here in the UK.
Haven't priced any yet, but I have a hydragas pump which should displace any of the old fluid. Not sure how I will achieve 84% fill volume lol.
Haven't priced any yet, but I have a hydragas pump which should displace any of the old fluid. Not sure how I will achieve 84% fill volume lol.
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Tiz easy.
1) measure volume and weight of liquid removed.
2) fill empty VCU with an inert liquid.
3) empty inert liquid and measure volume.
2&3 shud give 100% fill. 1 shud give minimum fill.
4) measure by volume 84% of 2&3 and refill. Or measure equivalent weight to 1 and refill. Or weigh empty VCU and add fluid until yu get a weight of empty VCU please the weight equivalent of 84% volume.
How do you reseal it?
1) measure volume and weight of liquid removed.
2) fill empty VCU with an inert liquid.
3) empty inert liquid and measure volume.
2&3 shud give 100% fill. 1 shud give minimum fill.
4) measure by volume 84% of 2&3 and refill. Or measure equivalent weight to 1 and refill. Or weigh empty VCU and add fluid until yu get a weight of empty VCU please the weight equivalent of 84% volume.
How do you reseal it?
How thick is the body? Plug it and pein it over? Grub screw? braze a patch over the holes?
jonaf
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Thread a grease nipple into the hole and fill the unit with silicone using a grease gun.
Dow Corning can supply the fluid: https://www.xiameter.com/en/Pages/LandingPage.aspx
Dow Corning can supply the fluid: https://www.xiameter.com/en/Pages/LandingPage.aspx
ianda12
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If the silicon fluid has gone hard and locked the VCU solid (normal fault ) How are you going to get it out ?
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Tiz a balanced unit, so that might be a problem. How do yu think brazing is going to affect the liquid, or the balance?
Re: viscous coupling
Thread a grease nipple into the hole and fill the unit with silicone using a grease gun.
Dow Corning can supply the fluid: https://www.xiameter.com/en/Pages/LandingPage.aspx
Maybe it was me, but i couldnt see any VCU fluid.
jonaf
Active Member
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The viscous coupling fluid is in the "Transmission" section on this page: Automotive Solutions - Automotive Lubrication - Dow Corning
ming
SPACE TWOT
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Ha ha ha ha ha ha. . . . . .OK if any you Muppet's manage to refill a vcu can you monitor it and write details of it on this ear forum even if yer ird or rear bit go's tits 
and if you get it correct we can all save a few bob
and if you get it correct we can all save a few bob 
