Drivetrain broken crank pulley
#1
broken crank pulley
I was sitting at the red light yesterday when I heard a loud pop and then my battery light and trunk light came on and a few seconds later my car started overheating and my entire dash was lit up...I pulled off the side of the road and seen my belt had broken, well turns out that my entire crank pulley came apart half of it is still on the car and half of it where the belt goes is broken off. I bought the new OEM pulley from MINI today but I was just wondering what the special tool is to get the crank pulley off and put the new one on? if its a hard job? and if someone has the steps to do it. Im not sure if theirs a key that needs to be in place to keep the timing or cams in place?
#2
The pulley and timing are independent. This thread should help.
https://www.northamericanmotoring.co...oem-tools.html
or this:RA Removing and installing or replacing vibration damper (COOPER S).pdf
https://www.northamericanmotoring.co...oem-tools.html
or this:RA Removing and installing or replacing vibration damper (COOPER S).pdf
Last edited by Oxybluecoop; 07-22-2010 at 10:03 AM.
#3
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There's no key for the pulley. Removal takes a puller, but you have to have something to press against, like a long bolt into the crankshaft. Just be careful to not strip the thread out of the pulley, cause it will be real hard to get off if that happens.
Also check out our ATI damper for a replacement, it's just a bit lighter and will last longer.
Also check out our ATI damper for a replacement, it's just a bit lighter and will last longer.
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You need to go to your local auto parts store and rent a puller. It's usually free with a refundable deposit. You may also need to go to your local hardware store to buy a long bolt with the correct threading because those pullers usually don't have the correct size bolt for your crank. Make sure you get the right thread, you don't want to mess up the threads on your crank.
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If you follow the first link that Oxybluecoop posted at the beginning of this thread you will get all the information you need to swap your pulley. I found this link very helpful when my factory pulley broke in half as well.
The thread pitch is 1.75, I think. Just to be sure, you should remove the factory crank bolt and bring it with you so you get the right one.
The thread pitch is 1.75, I think. Just to be sure, you should remove the factory crank bolt and bring it with you so you get the right one.
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Yes, it's very common. Those pulleys have a rubber damper center that gets old and weak and eventually fails. I replaced mine with an ATI Super damper from WMW.
Just use that link as a guide. I didn't buy the rods and cut them down either. Once you remove your crank bolt you can bring it with you to use as a reference for sizing. Your mechanic friend will know all of this as well.
Just use that link as a guide. I didn't buy the rods and cut them down either. Once you remove your crank bolt you can bring it with you to use as a reference for sizing. Your mechanic friend will know all of this as well.
#16
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