hi mate ive just finnised sorting mine out after it sized up along with my belt tensioner ! on a td5 90 the best thing i can suggest is remove/losen the fan belt and just try to turn the pully
it could be just a bearing you need :D if this is the case you need a 15mm socket to remove the bolt in the centre of the pully remember its a LEFT HANDED THREAD :shock:
take it to eny place localy that does bearings thay will normaly remove and refit for you (you can also yous a hi-lift jack to repress the bearing in) should cost no more than a £10.00 as a pose to £25.00+vat for a new one and takes about 30 mins off/on
hope this helps got eny questions just shout me :lol:
p,s,p at the rear in photo.
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