Technical Alternator belt squeak

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Technical Alternator belt squeak

I've been down to another garage who i've used before and the bloke had a listen. He tested the belt and said it was slack and it needs tightening. I mentioned about a tensioner but he said its done manually. However on this forum i've read that the JTD has an auto tensioner? :confused:(mine hasn't got air con) I've had a new clutch pulley as my old one was seized causing a loud clicking/ticking noise.

Phil
 
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Mine certainly has an Automatic spring load type pulley, also I have aircon on mine...remember managing to put a spanner on it to turn one direction on the tensioner and it releases enouth to allow change of aux belt after changing all cambelt stuff to put new aux belt at same time..is hidden down to rear of cambelt cover difficult to see from above and needs remove of inner wheel arch cover plastic just the part for engine access, it does require a lot of spanner force to slacken off tension on belt so would take alot for it to jam if needed to tension slightly after new belt bedded in it is one of those odd 15mm or 16mm spanner sizes irc
and if tensioner ok then the belt may be incorrect size in diameter but you had one fitted by fiat
 
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I have air con on mine philip, would imagine you would have the tensioner but as you do not have air con the belt would run a slightly different route than air con fitted jtd engine..did your mechanic give you an idea of amount of slack in belt
 
I have air con on mine philip, would imagine you would have the tensioner but as you do not have air con the belt would run a slightly different route than air con fitted jtd engine..did your mechanic give you an idea of amount of slack in belt

The bloke i went to see about it said it was quite slack. The only thing is, i thought a slack or slipping belt squeeled more when revs increase? However this squeaking is happening more and getting louder. Infact it gets worse when the lights, heaters etc are on. It doesn't squeak constantly when driving just intermittent - when changing gear, slowing to a junction etc.

Phil
 
So should my car have either or both of these?

http://www.shop4parts.co.uk/?name=store&op=Details&ProdID=1019&sku=3189

http://www.shop4parts.co.uk/?name=store&op=details&ProdId=1274&sku=3992

How exactly do these pulleys work and could mine (if i have one) be faulty?

Phil

According to ePER, the JTD engine witout air contitioning doesn't have either of those parts. All the parts marked E025 on the ePER page below are only for A/C.

It would appear that the short belt (item #1 ) is for non A/C engines. As there is no tensioner for this belt, it must be adjusted by moving the alternator, or it may be a stretchy belt that needs no adjustment.
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According to ePER, the JTD engine witout air contitioning doesn't have either of those parts. All the part marked E025 on the ePER page below are only for A/C.

It would appear that the short belt (item #1 ) is for non A/C engines. As there is no tensioner for this belt, it must be adjusted by moving the alternator, or it may be a stretchy belt that needs no adjustment.
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Ah right thanks Davren, i really appreciate your reply you have been very helpful.

So before when i had the belt tightened and it slipped again, could that have been caused by the seized clutch pulley? At least i've got rid of one annoying noise, just this squeaking now.

Phil
 
Yes... when the clutch pulley seized, the belt would have continued turning on it, wearing the grooves on the inside of the belt. The belt should have been replaced with the pulley. If the old belt was refitted, it's likely that it will slip on the new pulley.
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Yes... when the clutch pulley seized, the belt would have continued turning on it, wearing the grooves on the inside of the belt. The belt should have been replaced with the pulley. If the old belt was refitted, it's likely that it will slip on the new pulley.
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So worn grooves in the belt can cause it to slip. Out of interest what else can cause a belt to slip? Taking into account my car doesn't have those tensioners. I've read on the net about worn alternator bushes, can that be a cause? Or a faulty crank pulley? I just want to know so if it does slip again i can look at other possibilities.

Thanks

Phil
 
Hello

This weird noise from the alternator area has come back:bang: Its not a squeak like it was before so I have a video for people to listen to hopefully shed some light on this problem. Just to recap, its had 2 new alternator belts and a new clutch pulley. My old engine engine never had this problem but my mechanic kept the crank pulley that came with this engine. I had the alternator tested with one of those long screwdrivers and it seemed fine. However at that time the noise wasn't present. In the video the noise isn't as bad as other days. I can't tell whether its coming from nearer the alternator or crank pulley side.

http://m.youtube.com/#/watch?v=ADbekrVOe3w&feature=plcp

Thanks

Phil
 
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I've been see a mechanic at my local motor spares and he had a good look around. He reckons its the crank pulley. He had a feel and he said it feels sharp and theres a bit of play in causing the belt grooves to wear down. There was also a bit of play in the belt. So hopefully i might have a solution.

Phil
 
The JTD engine does have one.

Providing the after market one is from a reputable manufacturer, it should be OK. If it's the later modified one, you will also need 4 shorter bolts to fit it with because it has a deeper well in the center of it.

There's a new original Fiat one for £54 delivered here: http://www.ebay.co.uk/itm/Alfa-Rome...ERA-Drive-Crank-Pulley-55208280-/251277475594

As the seller is a Fiat dealer, they would also be able to supply the bolts.
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The JTD engine does have one.

Providing the after market one is from a reputable manufacturer, it should be OK. If it's the later modified one, you will also need 4 shorter bolts to fit it with because it has a deeper well in the center of it.

There's a new original Fiat one for £54 delivered here: http://www.ebay.co.uk/itm/Alfa-Rome...ERA-Drive-Crank-Pulley-55208280-/251277475594

As the seller is a Fiat dealer, they would also be able to supply the bolts.
.

Thanks Davren.

Would it matter if the new pulley doesn't have this balancer? I assume its part of the pulley....

Phil
 
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