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X5 E70 (2007 - 2013)
E70 BMW X5 produced between 2007 and 2013. Discuss the E70 X5 with other BMW owners here.

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  #1  
Old 09-19-2019, 09:52 AM
paramedic1079 paramedic1079 is offline
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Belt Tensioner DIY Without Removing Fan???

Is it possible to replace the belt tensioner and idler pulleys on the N55 engine without removing the fan? Any recommendations are greatly appreciated. Thanks.
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Old 09-19-2019, 10:01 AM
BabyUnicornTaco BabyUnicornTaco is offline
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The fans are pretty easy to remove on the E70. Why not just take it out rather than risking damage to the fan?
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Old 09-19-2019, 10:05 AM
paramedic1079 paramedic1079 is offline
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Originally Posted by BabyUnicornTaco View Post
The fans are pretty easy to remove on the E70. Why not just take it out rather than risking damage to the fan?
I agree with you. I was just curious if anyone has tackled this without removing the fan. My indy wanted 1.5 hours labor but I've done this before on my E90 3 series so I figured it was worth a DIY.
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Old 09-19-2019, 10:23 AM
BabyUnicornTaco BabyUnicornTaco is offline
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Belt Tensioner DIY Without Removing Fan???

Quote:
Originally Posted by paramedic1079 View Post
I agree with you. I was just curious if anyone has tackled this without removing the fan. My indy wanted 1.5 hours labor but I've done this before on my E90 3 series so I figured it was worth a DIY.


I have changed belts on my E70 N62 without removing the fan but I was very careful and had done it a few times. Not easy and definitely a strain because of how hard you have to push on the wrench. The tensioner is probably much easier to remove and replace but the belts are a hassle with the fan in.
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Last edited by BabyUnicornTaco; 09-19-2019 at 10:31 AM.
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Old 09-20-2019, 06:41 AM
deroy deroy is offline
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If you decide to take the fan out, release leftover excess pressure in the coolant expansion tank first, before you detach that small tube that runs to it from the top of the radiator, and put a piece of cardboard behind the radiator for protection too. As ‘taco said, you have to wrench with some force.


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Old 09-20-2019, 09:25 AM
jason0 jason0 is offline
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Originally Posted by deroy View Post
If you decide to take the fan out, release leftover excess pressure in the coolant expansion tank first, before you detach that small tube that runs to it from the top of the radiator, and put a piece of cardboard behind the radiator for protection too. As ‘taco said, you have to wrench with some force.


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I have removed the fan several times on my N55. Never removed any coolant tube. Is the 8 cylinder different?
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Old 09-20-2019, 10:29 AM
BabyUnicornTaco BabyUnicornTaco is offline
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Belt Tensioner DIY Without Removing Fan???

Quote:
Originally Posted by jason0 View Post
I have removed the fan several times on my N55. Never removed any coolant tube. Is the 8 cylinder different?


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This is what is being referred to on the V8. I think the fan can slide by it but if not it is super easy to disconnect and reconnect. I think the N55 inline 6 has a tube in a similar spot.



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Last edited by BabyUnicornTaco; 09-20-2019 at 10:32 AM.
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Old 09-20-2019, 05:01 PM
paramedic1079 paramedic1079 is offline
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Thanks for the help. I'm going to tackle the job in a week or two.
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  #9  
Old 09-20-2019, 05:30 PM
BabyUnicornTaco BabyUnicornTaco is offline
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Quote:
Originally Posted by paramedic1079 View Post
Thanks for the help. I'm going to tackle the job in a week or two.


It’s not bad. It’s an extra 10 minutes to remove the fan and place the cardboard in front of the radiator. Not a bad job.


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