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Thread: 300 TDi Viscous Fan Coupling

  1. #1
    Engineer Tom Mepham's Avatar
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    Default 300 TDi Viscous Fan Coupling

    I had a new genuine Viscous Fan Coupling fitted when Groombridges changed the cam belt 35,000miles ago, the old one was totaly shot and was liable to part company from the fan pulley and send the fan through the radiator! I noticed the other day that the coupling is loose again and I can wobble the fan when it is warm- I would have expected the coupling to last longer! It cost me 52 for a genuine one, I can get one cheaper on ebay but I wonder how long a pattern one (ie. S*^T PART) will last?!
    Can anyone recommend a good quality, cheaper replacment that will last?
    Or should I just bite the bullet and order one from Landrover?
    Tom

  2. #2

    Default Re: 300 TDi Viscous Fan Coupling

    Quote Originally Posted by Tom Mepham View Post
    I had a new genuine Viscous Fan Coupling fitted when Groombridges changed the cam belt 35,000miles ago, the old one was totaly shot and was liable to part company from the fan pulley and send the fan through the radiator! I noticed the other day that the coupling is loose again and I can wobble the fan when it is warm- I would have expected the coupling to last longer! It cost me 52 for a genuine one, I can get one cheaper on ebay but I wonder how long a pattern one (ie. S*^T PART) will last?!
    Can anyone recommend a good quality, cheaper replacment that will last?
    Or should I just bite the bullet and order one from Landrover?
    Tom
    Have you checked to see if it's the bolts holding the fan to the viscous coupling that are loose.
    Viscous couplings don't usually cause problems apart from seizing up.

  3. #3
    Mechanic *landy man*'s Avatar
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    Default Re: 300 TDi Viscous Fan Coupling

    just remove it like i and many others have,my engine does not get any hotter without it at no matter how hard i drive it,i keep it in the boot just in case though.
    don't follow me,i'm lost too.95 disco 1 300tdi
    proud member of the YCHJCYA2PDTHFH club

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    Mechanic bestraffy's Avatar
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    Default Re: 300 TDi Viscous Fan Coupling

    just get s a second hand one off ebay if you want but dont really need one, 35.000 is not bad prob was a duff one you bought

  5. #5
    Engineer bananahead's Avatar
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    Default Re: 300 TDi Viscous Fan Coupling

    If you want to buy a second hand one pm me. If you have a decent radiator you can probably leave it off. Personally i leave them on, as my cars see mud and dust, and i like to keep it standard. Many people leave them off with no problems though.

    Don't take life too seriously. You'll never get out of it alive.
    1998 Discovery 300TDI (Disco PEW) (staying with friends )
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    Engineer Tom Mepham's Avatar
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    Default Re: 300 TDi Viscous Fan Coupling

    I ordered one from paddocks so we shall see how we go, it is the coupling that is loose not the bolts. I tend to think the same way as you bananahead, keep it standard- my disco gets all sorts of stupid treatment and it is important that it stays reliable, i'v got a 700mile round trip to cornwal to do at the end of the month and I don't want to be saying I was silly really.
    Thanks all, will let you know my opinion of paddocks coupling when it arrives.
    Tom

  7. #7

    Default Re: 300 TDi Viscous Fan Coupling

    unless your doing some deep wading get rid of the viscous and fit a kenlow.. i got rid of my viscous (well as far as the boot) and have stood in traffic many times with normal working temp

  8. #8
    Engineer Tom Mepham's Avatar
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    Default Re: 300 TDi Viscous Fan Coupling

    Kenlows are good, I fitted one to my mates 200tdi 90. It worked well but the fitting kit was nasty and did not make a very nice job, for what they cost I think they should be better engineered.

  9. #9
    Mechanic dave_wales's Avatar
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    Default Re: 300 TDi Viscous Fan Coupling

    Is their an easy way to tell if the viscous is working up as i don't think my fan is cos when i tow up a long hill i normaly have to stop because its getting to hot.
    its only when i'm towing though.

  10. #10
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    Default Re: 300 TDi Viscous Fan Coupling

    the fan should turn easily by hand when cold but harder to turn when its hot so if you check before and after a journey you should know.
    don't follow me,i'm lost too.95 disco 1 300tdi
    proud member of the YCHJCYA2PDTHFH club

  11. #11
    Mechanic dave_wales's Avatar
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    Default Re: 300 TDi Viscous Fan Coupling

    Cheers, i will check it tomorrow

  12. #12
    Engineer thebiglad's Avatar
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    Default Re: 300 TDi Viscous Fan Coupling

    Actually, on a cold engine the fan will be stiff to turn. It slackens off after normal usuage but stiffens up again if the engine is being worked hard.
    Had loads though!

    2010 Triumph Bonneville T100

  13. #13
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    Default Re: 300 TDi Viscous Fan Coupling

    Actually, on a cold engine the fan will be stiff to turn. It slackens off after normal usuage but stiffens up again if the engine is being worked hard.

    so cold= stiff,warm=easy and hot=stiff!!!! cant figure that one out im afraid
    don't follow me,i'm lost too.95 disco 1 300tdi
    proud member of the YCHJCYA2PDTHFH club

  14. #14
    Mechanic dave_wales's Avatar
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    Default Re: 300 TDi Viscous Fan Coupling

    I dont think my viscous fan is working .

    Any one taken of the viscous fan and fitted an electric one?
    I have a relay and some wire to fit it so i was going to have a look at the cars at my local scrap yard for a suitable donor fan

    Any one done some thing similar and found a suitable donor fan and themo switch off some thing?

    Cheers

  15. #15
    Mechanic dave_wales's Avatar
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    Default Re: 300 TDi Viscous Fan Coupling

    I've had the viscous fan of my 300 and i held it in a 32mm ring spanner and spun it and it only turns about half a turn. I warmed it with a heat gun and you could see the coil on the front moving then i span it again, it still only turns about half a turn???

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