sqeeling when on full lock

craiga

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hi i own a 2001 c220 cdi had it serviced 2 1/2 months a go and had the poly v belt changed at the same time it now squeeles every time its on full lock could any one know what it is many thanks craig
 

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Sounds like there's something wrong with the tensioner to me. At full lock your power steering pump will load up and require more force to turn the pulley.
 

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Hello and welcome it would seem the the belt is not tight enough or the tensioner device is not set up correctly
 

Rappey69

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OR, as i found out,the alternator has a clutch type arrangement on the pulley wheel and when its knackered it causes the squeeling noise and also adds another noise when the car is first started cold but goes away once warmed up a bit.
 
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craiga

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thanks for the replies, could something have been knocked out of place when fitting the new belt? because everything was ok before it was changed, the garaged reckon it is the alternator pulley but it squeels only when on full lock whether hot or cold
 

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Well its still something on the belt,,on full lock there is extra tension on the belt,,could the belt be the incorrect one
 
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craiga

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they checked the belt today and said it was the correct belt fitted. i did notice though when on full lock the belt tends to jump
 

Rappey69

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when the alternator pulley is on its way out the belt will only make a noise when on full lock.
when the car is cold have a look at the belt with engine running and see if it jumps about all over the place, if it does then its probably the pulley/clutch thingy..
 

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As Rappey if the alternator pulley this will wobble when under load
 
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craiga

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the garage did mention it could be the alternator pully is this a big job / expensive, would i need a new alternator or just a pully? thanks craig
 

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the garage did mention it could be the alternator pully is this a big job / expensive, would i need a new alternator or just a pully? thanks craig

Only the pulley and can be done in in situ
 
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craiga

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many thanks for the info would this be somthing that i could do at home or does it req speacial tools?
thanks craig
 

television

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Many have done it.

I have not got the other computer on until this evening I can print off the instructions for you

I will need an email address
 

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you will need a special spline tool to undo the pulley. also the pulleys can become extremely tight in operation and need a great deal of force to undo.

at least you have the 220 which allows reasonable access. the 270 c-class is no fun at all.
 

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The squeal is from the belt, so the problem is with the belt.

If the alternator pulley running out of true,, then this cam make it squeal
 

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I have sent the details
 
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craiga

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thanks for all the feedback from you all and many thanks to malcom for emailing me the diagrams
i have booked it in to mercedes in leicester tommorrow morning lets see what the damage could be in £'s anyone got any ideas how much replacing the pully would be ?
 

television

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thanks for all the feedback from you all and many thanks to malcom for emailing me the diagrams
i have booked it in to mercedes in leicester tommorrow morning lets see what the damage could be in £'s anyone got any ideas how much replacing the pully would be ?

Shame that you did not book it in with a good indie,,it would be ½ what ever MB charge you
 

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