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      07-25-2021, 07:07 PM   #1
waxfigure
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Belt Kit Torque Specs?

Can someone tell me the torque specs for the tensioner and the idler pulley?

just purchased: BMW Accessory Drive Belt Kit - 11288604266KT

Also, if you can link any guides it would be highly appreciated!

Thank you!
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      07-25-2021, 09:51 PM   #2
delvec03
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n20 is around 25 ft lbs.

careful...I learned that aluminum is soft, the hard way. wrench tight should be plenty.
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      07-26-2021, 10:15 PM   #3
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Quote:
Originally Posted by delvec03 View Post
n20 is around 25 ft lbs.

careful...I learned that aluminum is soft, the hard way. wrench tight should be plenty.

Oops I forgot to mention its for N55 (2016 m235i)
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      08-01-2021, 04:39 PM   #4
123Britt
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Some Torque Value for N55 (235I) -

Hope these are accurate - use at own risk:


56Nm = idler Pulley
38Nm = Tensioner Bolt


Oil Filter Housing = 22 Nm
Spark Plugs = 23 Nm
W/P = 10Nm Aluminium non-alum 20.5 Nm
Coolant Hose to Block (Mickey Mouse) 8.5 Nm
Intake manifold Cover Nuts = 15Nm
Intake manifold Cover Bolts = 15Nm
Oil Cooler Bolts = 16 Nm
Oil Cooler Bolt holding (2) Feedlines = 8Nm
Oil Drain Plug = 25NM
Hose Clamps = 3Nm

Last edited by 123Britt; 08-02-2021 at 06:25 AM..
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      08-14-2021, 09:56 AM   #5
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Quote:
Originally Posted by 123Britt View Post
Hope these are accurate - use at own risk:


56Nm = idler Pulley
38Nm = Tensioner Bolt


Oil Filter Housing = 22 Nm
Spark Plugs = 23 Nm
W/P = 10Nm Aluminium non-alum 20.5 Nm
Coolant Hose to Block (Mickey Mouse) 8.5 Nm
Intake manifold Cover Nuts = 15Nm
Intake manifold Cover Bolts = 15Nm
Oil Cooler Bolts = 16 Nm
Oil Cooler Bolt holding (2) Feedlines = 8Nm
Oil Drain Plug = 25NM
Hose Clamps = 3Nm
I went with 38 / 60 based on other N55 videos on youtube..

I accidentally used ft lbs instead of NM on my digital torque wrench but I ended up re-torquing it to NM 10~15 minutes after I realized. Luckily haven't noticed any issues yet (done about 300miles since)
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      08-15-2021, 06:54 AM   #6
123Britt
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Idler Pulley Torque

Yes 60Nm or 56Nm -- wish I had at least an F30 maintenance manual to review.

.
I took that info from when I ordered the parts from FCPEuro.

On their website when ordering the belt kit it says:

Please note: When installing this kit torque the belt tensioner bolt to 38Nm and torque the idler pulley bolt to 56Nm.
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