307 hdi 2.0 diesel 2003 drive belt problems

[gavt84]

Hi just looking for some help i was driving car and my drive belt fell off the belt looks in pretty good condition and all wheels move ( air con alternator etc) in the haynes guide it shows three marks on the automatic tensioner my tensioner is at the point where it says change the belt.

If i buy a new belt how do i reset my tensioner as i thought it was automatic i have tried moving the tensioner by hand with the belt off and it seems solid so im thinking the tensioner could be stuck solid.

So what im asking is does the tensioner move by hand?

Should the tensioner move back to original position when belt is off?

Also if the tensioner is not going back to the original position this must mean tensioner is seized?

Any help would be great thanks

[matt268uk]

If you buy a new AUX belt and tensioner the tensioner will be in a closed type of position,once you have bolted the new tensioner on and fitted the new belt there is a little screw or bolt that you remove and it then tensions the belt.Don't undo the bolt on the tensioner until its all fitted and the new belt is on otherwise you'll be trying to fit the new belt over a very tight system of pully's.

[gavt84]

thanks for reply should the tensioner automatically go back to its original position when the belt is taken off at the moment the belt is off and the tensioner is at the position where it states change the belt. i am trying to find out if the tensioner is faulty or not. is there a way to check the tensioner?

[matt268uk]

The answer to that is no,once you take the tensioning bolt out of the tensioner it stays in the in the in the open and tensioned position,when you buy the new tensioner they are pre loaded,from what i can remember the spring is so strong i doubt you'd move it,i would go ahead ,order an AUX belt and tensioner from euro car parts and replace them at the same time,if you remove the front wheel,remove the arch liner and you'll have access to the tensioner,mabe worth taking a pic of the belt before removing so you have an idea on replacing with all the different pully's it goes around, replace the tensioner,then fit the belt,then take out the tensioning bolt and it will spring open and hold the belt and the correct tension for you,replace the arch liner and wheel and your done,its not hard and well worth doing yourself,you'll save about £150 in labour if you supply the parts and do it yourself.
Again just a warning, do not remove the tensioning bolt until its all fitted and the belts back on,you'll see the bolt i'm talking about once you see the new roller.

[gavt84]

after looking at the car this morning tensioner is moving freely with spanner but when belt is fitted it is still really loose, according to manual there should be a idler puller between air con and alternator pulley i cant see this so im thinking it has sheared off, is this possible and if so where can i get a new one i cant seem to find them on the net.

thanks

[matt268uk]

Euro car parts is a good place to start.