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Putting fan belt back onto the pulley for a 2002 bmw 525i sedan.

I had to change the alternator for my bmw 525i.. i pulled the fan belt out of the pulley to replace my old alternator for a new one. after putting my new alternator in i am having a hard time putting the fan belt back on the pulley.. when i put the fan belt back onto the 5 pulley's its not as tight as it was before. why is that.. what am i doing wrong?

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  • BMW Master
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The tensioner , have to retractit. Vitally

Posted on May 22, 2009

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How do I replace the broken fan belt on my y2000 Mazda Bravo 2wd petrol ute? I need to know which parts to loosen, and how to loosen them, so I can slip the belt over the pulleys. I can see where the


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Hi and Welcome to Fixya

Here's how to replace the belt.

1
Disconnect the battery ground cable and lay it aside, ensuring that it does not touch metal. Unplug the wiring harness connector on the back of the alternator if so equipped. If you can't pry the plug tangs open with your fingers, use a screwdriver.
2
Remove the nuts on the back of the alternator with a wrench then pull the wires off the studs. Loosen the accessory drive belt tensioner with a socket, by pushing the tensioner towards the engine. Lift the belt off the pulleys.
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4
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5
Plug in the wiring harness connector if so equipped. Slide the wires onto the proper terminals on the back of the alternator. Tighten the battery feed wire nut to 71 inch-pounds of torque. Reinstall the negative battery cable.

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