used 185mm pulley take a look please
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Joined: Dec 2011
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MB C32 AMG
used 185mm pulley take a look please
I got used 185mm crank pulley and it looks like it has problem on pulley ribs, looks like it scratched (more flat, little bit sharp) would it cut a belt?
before installing I want you guys to take a look on it and give me your thoughts
I took some pic of different angles
before installing I want you guys to take a look on it and give me your thoughts
I took some pic of different angles
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From: Orlando FL
CLK55 AMG
That doesn't look like anything really in the pictures, I could be over looking something, but that seems fine to me. I have had pulleys do that and nothing happened.
Maybe your mechanic is trying to just get more $ out of ya??
Maybe your mechanic is trying to just get more $ out of ya??
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Joined: Dec 2011
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MB C32 AMG
Don't you see it looks like is is bent?
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Joined: Jan 2010
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From: Orlando FL
CLK55 AMG
Your right, I didn't quite see that picture correctly but I see it now. And I asked my instructor (I attend Nashville Auto Diesel College) an he said it can. I say you replace it.
Sorry for the confusion!
Sorry for the confusion!
Super Member
Joined: Jul 2006
Posts: 925
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From: Maine
Not an AMG :(
I got used 185mm crank pulley and it looks like it has problem on pulley ribs, looks like it scratched (more flat, little bit sharp) would it cut a belt?
before installing I want you guys to take a look on it and give me your thoughts
I took some pic of different angles
before installing I want you guys to take a look on it and give me your thoughts
I took some pic of different angles
If there is increased friction due to those ribs, it is a mechanical certainty that the lifespan of the belt will be shorter. It may not shred immediately, but it will not last as long.
However, I would be far more concerned about installing a used crankshaft pulley that has not been verified to be properly balanced.
Adequate balancing is of critical importance and you are taking a risk by installing a used pulley.
I'm not in any way slating anyone who has installed a used pulley, but you owe it to yourself and your crank seal to ensure that any used crankshaft pulley is adequately balanced.
Even the minimal damage on that pulley you have can throw off the balancing.
Bottom line: your used pulley may be perfect. On the other hand, do you want to take that risk? Balancing and smoothing those ribs should cost very little by a shop that can do it properly.
More information on balancing HERE.
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Joined: Dec 2011
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MB C32 AMG
I'm inclined to agree with your mechanic - some of the ribs look like they are bent down into the grooves. If this is the case, the pulley ribs will interact with the pulley defect.
If there is increased friction due to those ribs, it is a mechanical certainty that the lifespan of the belt will be shorter. It may not shred immediately, but it will not last as long.
However, I would be far more concerned about installing a used crankshaft pulley that has not been verified to be properly balanced.
Adequate balancing is of critical importance and you are taking a risk by installing a used pulley.
I'm not in any way slating anyone who has installed a used pulley, but you owe it to yourself and your crank seal to ensure that any used crankshaft pulley is adequately balanced.
Even the minimal damage on that pulley you have can throw off the balancing.
Bottom line: your used pulley may be perfect. On the other hand, do you want to take that risk? Balancing and smoothing those ribs should cost very little by a shop that can do it properly.
More information on balancing HERE.
If there is increased friction due to those ribs, it is a mechanical certainty that the lifespan of the belt will be shorter. It may not shred immediately, but it will not last as long.
However, I would be far more concerned about installing a used crankshaft pulley that has not been verified to be properly balanced.
Adequate balancing is of critical importance and you are taking a risk by installing a used pulley.
I'm not in any way slating anyone who has installed a used pulley, but you owe it to yourself and your crank seal to ensure that any used crankshaft pulley is adequately balanced.
Even the minimal damage on that pulley you have can throw off the balancing.
Bottom line: your used pulley may be perfect. On the other hand, do you want to take that risk? Balancing and smoothing those ribs should cost very little by a shop that can do it properly.
More information on balancing HERE.
Last edited by c32amgsuper; Jan 11, 2013 at 01:03 PM.
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Super Member
Joined: Jul 2006
Posts: 925
Likes: 2
From: Maine
Not an AMG :(
If the ribs need smoothing - i.e. if the edges are slightly pushed into the grooves (like it appears), I would definitely have that done (properly). Otherwise it's going to wear down the belt.
Do that BEFORE balancing. You shouldn't have too much trouble finding a shop who can balance a pulley properly. I had a spare used stock crank pulley done by a machinist ~2008 and it cost $50.
[Importantly, it DID need re-balancing]
Admittedly, I'm a tad ****-retentive when it comes to matters such as these, but for the sake of a minimal cost, I'd 'service' the pulley to put your mind at ease.
Do that BEFORE balancing. You shouldn't have too much trouble finding a shop who can balance a pulley properly. I had a spare used stock crank pulley done by a machinist ~2008 and it cost $50.
[Importantly, it DID need re-balancing]
Admittedly, I'm a tad ****-retentive when it comes to matters such as these, but for the sake of a minimal cost, I'd 'service' the pulley to put your mind at ease.
