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      08-15-2015, 06:03 PM   #1
Putcha ang ganda...
Sean05's Avatar

Drives: 08 MR E92 M3
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DIY: idler pulley replacement

If your car sounds like this its your idler pulley

YELLOW ARROW IDLER PULLEY 16mm bolt to remove the Pulley
RED ARROW TENSIONER 14MM BOLT and push down to remove the tension so you can remove the belt.

STEP 1: remove the intake

STEP 2: remove the radiator fan only one screw on the fan upper left if your facing your engine then slightly pull the fan. Make sure to unplugged the fan and move any thing thats blocking the way the only tough part is to move the radiator hose just slowly pull it out again move anything thats blocking and u dont have to take anything off

STEP 3: take the cover off the pulley tentioner and get a 14mm socket and push down. It will move the tensioner so u can remove the belt... This is not the idler pulley its the one on top of that pulley

STEP 4: 16mm socket to remove the idler tensioner and replace

STEP 5: put everything back and done

Would have taken 30 minutes but i took my time

Last edited by Sean05; 08-16-2015 at 03:13 AM.
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