03-13-2024, 08:13 AM | #1 |
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How to replace a serpentine belt
I have a 2021 m340i (17,000 miles) and want to change an aftermarket charge pipe. Before installing the charge pipe, I want to replace a serpentine belt.
Does anyone know how to change the serpentine belt? I have had replace serpentine belts on other cars without any issue, but the belt tensioner has two pulleys (see picture). In advance, thank you for sharing your knowledge with us. |
03-16-2024, 02:04 PM | #3 |
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MY 2021 and up Starter/Generator
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Delighted_Jester41.00 |
03-19-2024, 09:47 AM | #4 |
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- Delighted_Jester
As the picture shown, it has two pulleys. Maybe, 2021 model has one pulley. - GOTOFMS I tried to insert a rod in two holes (left upper, around 10 o'clock orientation) on the front and real ring plates (?). Still the belt tension is very tight and I can't remove the belt. My merciless beast is still in the garage... Maybe, I need to remove right side pulley. Anyway, thank you for the valuable explanation with pictures. |
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03-19-2024, 06:10 PM | #5 |
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[QUOTE=trinity75;30999209]
I tried to insert a rod in two holes (left upper, around 10 o'clock orientation) on the front and real ring plates (?). Still the belt tension is very tight and I can't remove the belt. My merciless beast is still in the garage... Maybe, I need to remove right side pulley. I believe the pulley to the left is part of the tensioner assembly. You put a socket, wrench or special tool on the nut of the left pulley and itll move off the belt. When you push the pulley itll line up the pin holes and itll hold the tensioner in place. |
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