Big.Mike Posted May 23, 2013 Share Posted May 23, 2013 Any tips on how to remove a stuck viscous fan? The belt doesn't have enough tension to allow me to remove it, is there anywhere I can safely hold onto? And yes, I know it has an opposite thread... Cheers, Mike Quote Link to comment Share on other sites More sharing options...
jackbw28 Posted May 23, 2013 Share Posted May 23, 2013 Have you tried hitting the spanner with a hammer whist yanking on the belt to get it as tight as possible? You can transmit a lot more force through 'impulse' and I find a few strong taps usually loosens it! Otherwise I'm not too sure on a 300. On the 200 the pulley its mounted to there is a hole you can stick a screwdriver or similar into if it's really stuck - I'm not sure if the 300 has similar!? Oh and squirt plenty of plusgas or whatever on the nut, every little helps! In extreme cases I have actually gone as far to remove the whole waterpump and and clamp the pulley in a vice... Jack. Quote Link to comment Share on other sites More sharing options...
reb78 Posted May 23, 2013 Share Posted May 23, 2013 I had to use a massive pair of stilsons to hold the pulley on mine last time. Not massive because I needed the leverage, but because they were the only ones with a big enough jaw. Quote Link to comment Share on other sites More sharing options...
sean f Posted May 23, 2013 Share Posted May 23, 2013 On a 300 you can lock the pulley using the 4 bolts hold ing on. You might be able to get away with wedging a screwdriver between two and pulling against that but it would be likely to slip off if not carefull, otherwise a C spanner type of thing might work. I designed and made a special spanner which picked up the heads of 3 of the bolts and could then be used to hold the pulley part still, they were cut from 5mm steel and sold at a couple of shows last year via a friend. I still have a couple left if you are interested, not to difficult to make something yourself just time consuming and a bit fiddly. Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted May 23, 2013 Share Posted May 23, 2013 Shove a rag in the belt to jam it and then the hammer, just don't hammer down, you will knacker the bearing in the pump... How sure are you it is seized? Quote Link to comment Share on other sites More sharing options...
A Twig Posted May 23, 2013 Share Posted May 23, 2013 EBay sells some fan spanners. Huge jobs cut from 5 or 6mm steel. Next day delivery. Use them. One holds the fan, the other goes on the nut - whack it with a hammer. Job done Quote Link to comment Share on other sites More sharing options...
jbs Posted May 23, 2013 Share Posted May 23, 2013 Halfrauds do a Viscous fan spanner which Is about £10 at the most-by silverline and will do the job properly without reverting to a hammer & chisel John Quote Link to comment Share on other sites More sharing options...
Eightpot Posted May 24, 2013 Share Posted May 24, 2013 Apply some heat to the nut using a small blowtorch, turning the fan a bit as you go to even it out and stop the plastic fan getting too hot. This normally makes all the difference. Either carefully carefully lever a screwdriver Between pulley and pump or use a thin bar or screwdriver in the hole in the side of the fan pulley to give extra leverage. Quote Link to comment Share on other sites More sharing options...
Jim1 Posted May 24, 2013 Share Posted May 24, 2013 I used a large lever bar plus hammer took 2 of us and about an hour Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted May 24, 2013 Share Posted May 24, 2013 .... and when refitting, don't do it up so f'tight Quote Link to comment Share on other sites More sharing options...
JeffR Posted May 24, 2013 Share Posted May 24, 2013 .... and when refitting, don't do it up so f'tight Or better still, throw it away and fit an electric one..... Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted May 24, 2013 Share Posted May 24, 2013 Or better still, throw it away and fit an electric one..... or two... as I did Quote Link to comment Share on other sites More sharing options...
TheRecklessEngineer Posted May 24, 2013 Share Posted May 24, 2013 Hammer and chisel. Two/three whacks and off it comes. The nut is so big that even if you damage it, there's still plenty of meat left. Quote Link to comment Share on other sites More sharing options...
aaronjp1990 Posted May 30, 2013 Share Posted May 30, 2013 big club hammer and a big punch and give it a few big smacks and will spin off no bother, how i got mine off anyway Quote Link to comment Share on other sites More sharing options...
Big.Mike Posted May 30, 2013 Author Share Posted May 30, 2013 Rag in the belt, that was the ticket... oh and the old trick of tightening hard first then un-doing, but then I do that automatically with all nuts! Weird thing about the fan is that it's of centre, that'll be a new one then... Quote Link to comment Share on other sites More sharing options...
mikec Posted May 30, 2013 Share Posted May 30, 2013 Shove a rag in the belt to jam it and then the hammer, just don't hammer down, you will knacker the bearing in the pump...How sure are you it is seized? Great idea never thought of that Quote Link to comment Share on other sites More sharing options...
reb78 Posted May 31, 2013 Share Posted May 31, 2013 Weird thing about the fan is that it's of centre, that'll be a new one then... The fan, the coupling or the bearing on the pump? I have a spare set of blades and the centre carrier that bolts to the viscous coupling of you need it - they are from my TD and the same as the 200tdi, not sure about the compatibility with the 300tdi. Quote Link to comment Share on other sites More sharing options...
Big.Mike Posted May 31, 2013 Author Share Posted May 31, 2013 The fan, the coupling or the bearing on the pump? I have a spare set of blades and the centre carrier that bolts to the viscous coupling of you need it - they are from my TD and the same as the 200tdi, not sure about the compatibility with the 300tdi. That's really kind of you! It's the viscous coupling that's off center... I'm feeling like moving to electric fans might me the way ahead... Quote Link to comment Share on other sites More sharing options...
Disco-Ron Posted June 1, 2013 Share Posted June 1, 2013 you are turning it the 'right' way aren't you. . . . Lh thread!! Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted June 1, 2013 Share Posted June 1, 2013 ...... I'm feeling like moving to electric fans might me the way ahead... Out of curiosity why do you feel like moving to electric fans? Viscous fans have a few advantages .... Quote Link to comment Share on other sites More sharing options...
Big.Mike Posted June 1, 2013 Author Share Posted June 1, 2013 Oh blast, I didn't mean to open that particular can of worms... Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted June 1, 2013 Share Posted June 1, 2013 Oh blast, I didn't mean to open that particular can of worms... Lol, I'll quickly place the lid back on and you can secretly spin your fan with that new fangled 'lectric if you want Quote Link to comment Share on other sites More sharing options...
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