Serpentine belt replacement

BimmerF32_430i · 04-06-2017, 02:05 PM

Does anyone have a diy from bentley manual or Ista+ for this? Id really appreciate it!

Orion4 · 04-06-2017, 02:36 PM

From the F30 Bentley's manual for the N55

BimmerF32_430i · 04-06-2017, 02:46 PM

Didnt realize id have to remove the electric fan. Would you be able to post the pictures of that process from pg 170? Thanks!

Orion4 · 04-06-2017, 04:23 PM

Certainly.

Polo08816 · 04-08-2017, 08:32 AM

Quote:

Originally Posted by chaudhrysn

Does anyone have a diy from bentley manual or Ista+ for this? Id really appreciate it!

See attached.

BimmerF32_430i · 04-08-2017, 03:07 PM

well took less than an hour to switch it out. i was able to replace the belt by just removing intake only. easy enough.

how much play is there supposed to be in the tensioner when the car is started? i noticed that its a bit wobbly

Polo08816 · 04-08-2017, 07:04 PM

Quote:

Originally Posted by Polo08816

See attached.

Quote:

Originally Posted by chaudhrysn

well took less than an hour to switch it out. i was able to replace the belt by just removing intake only. easy enough.

how much play is there supposed to be in the tensioner when the car is started? i noticed that its a bit wobbly

I've attached the BMW KSD flat rate labor estimate for this procedure.

txrisk27 · 08-11-2017, 03:37 PM

Quote:

Originally Posted by BimmerF30_335i

well took less than an hour to switch it out. i was able to replace the belt by just removing intake only. easy enough.

how much play is there supposed to be in the tensioner when the car is started? i noticed that its a bit wobbly

Sorry to dig up an old thread but did you need the required tool mentioned in the manual?

BimmerF32_430i · 08-11-2017, 04:12 PM

Quote:

Originally Posted by txrisk27

Quote:

Originally Posted by BimmerF30_335i

well took less than an hour to switch it out. i was able to replace the belt by just removing intake only. easy enough.

how much play is there supposed to be in the tensioner when the car is started? i noticed that its a bit wobbly

Sorry to dig up an old thread but did you need the required tool mentioned in the manual?

Naah i just stuck a thin screwdriver to hold the tension

Orion4 · 05-23-2018, 09:48 AM

I just replaced my belt at 98.8K (living on borrowed time, me thinks!). Old belt still looked pretty good. Was beginning to show some minor fraying along edges.

Got Serpentine belt, Drive Belt Tensioner, Drive Belt Idler Pulley and Idler cover from FCP for just under $158.

Took about 30 minutes.

Tools:
Torque wrench
Torx sockets: T-60, T-50
E- Socket: E-12
Straight slot screw driver
Small Allen wrench to use as locking pin for old tensioner during removal

Only removed the intake housing/ducting. Left electric fan assembly in place. Had sufficient space to access everything. If you have big beefy hands, it may be real tight with fan in place.

Dugster · 08-26-2018, 03:44 PM

I have a 2012 F30 335i. I received a "battery not charging" and coolant warning. After checking I noticed that the serpentine belt is completely gone... need to replace it myself, but it seems that its a struggle to find info on Google on how to do it myself. Can anyone assist? Thanks

John in VA · 08-26-2018, 08:52 PM

Quote:

Originally Posted by Dugster

... I noticed that the serpentine belt is completely gone... need to replace it myself, but it seems that its a struggle to find info on Google on how to do it myself. Can anyone assist? Thanks

https://www.newtis.info/tisv2/a/en/f...ement/IEaMHutc
https://f30.bimmerpost.com/forums/sh....php?t=1371786
https://f30.bimmerpost.com/forums/sh....php?t=1411963

Dugster · 09-14-2018, 04:26 PM

ok... so my serpentine belt has been replaced... along with the crankshaft pulley. I got the car back and the revs were going up and down. I drove the car and all of a sudden it died completely. I immediately pulled off the road. Opened the bonnet and there is oil everywhere and dripping out like crazy. Car wont start. What could it be? It is a 2012 F30 335i

Solidjake · 09-15-2018, 05:58 AM

Quote:

Originally Posted by Dugster

ok... so my serpentine belt has been replaced... along with the crankshaft pulley. I got the car back and the revs were going up and down. I drove the car and all of a sudden it died completely. I immediately pulled off the road. Opened the bonnet and there is oil everywhere and dripping out like crazy. Car wont start. What could it be? It is a 2012 F30 335i

Can you post a few pics of the engine bay? Belt might have snagged an oil line but it should have been picked up earlier since it would leak everywhere.

jh_f30 · 09-19-2018, 04:07 PM

I'm sitting on a new belt pondering replacing it. If my tensioner and pulleys still look ok (no wobbling) is it absolutely necessary to replace them? Or would it be ok to just replace the belt?

Solidjake · 09-20-2018, 07:38 AM

Quote:

Originally Posted by jh_f30

I'm sitting on a new belt pondering replacing it. If my tensioner and pulleys still look ok (no wobbling) is it absolutely necessary to replace them? Or would it be ok to just replace the belt?

You can only replace the belt. If you see the outside (non-ribbed) part of the belt shiny/any tears or cracks definitely replace it. Be sure to spin all of your pulleys while the belt is off to see if there is any bearing play/noise

jh_f30 · 09-20-2018, 01:04 PM

Quote:

Originally Posted by Solidjake

Quote:

Originally Posted by jh_f30

I'm sitting on a new belt pondering replacing it. If my tensioner and pulleys still look ok (no wobbling) is it absolutely necessary to replace them? Or would it be ok to just replace the belt?

You can only replace the belt. If you see the outside (non-ribbed) part of the belt shiny/any tears or cracks definitely replace it. Be sure to spin all of your pulleys while the belt is off to see if there is any bearing play/noise

Cool, thanks! I'll do it when I do my oil change next week.

04-06-2017, 02:05 PM	#1
BimmerF32_430i Major 303 Rep 1,134 Posts Drives: 2012 335i Join Date: Nov 2014 Location: Texas iTrader: (6)	Serpentine belt replacement Does anyone have a diy from bentley manual or Ista+ for this? Id really appreciate it!
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04-06-2017, 02:36 PM	#2
Orion4 Lieutenant Colonel 481 Rep 1,571 Posts Drives: 2013 335i Sport Line Sedan Join Date: Aug 2009 Location: Melbourne, FL iTrader: (0)	From the F30 Bentley's manual for the N55 Attached Images
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04-06-2017, 02:46 PM	#3
BimmerF32_430i Major 303 Rep 1,134 Posts Drives: 2012 335i Join Date: Nov 2014 Location: Texas iTrader: (6)	Didnt realize id have to remove the electric fan. Would you be able to post the pictures of that process from pg 170? Thanks!
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04-08-2017, 03:07 PM	#6
BimmerF32_430i Major 303 Rep 1,134 Posts Drives: 2012 335i Join Date: Nov 2014 Location: Texas iTrader: (6)	well took less than an hour to switch it out. i was able to replace the belt by just removing intake only. easy enough. how much play is there supposed to be in the tensioner when the car is started? i noticed that its a bit wobbly
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05-23-2018, 09:48 AM	#10
Orion4 Lieutenant Colonel 481 Rep 1,571 Posts Drives: 2013 335i Sport Line Sedan Join Date: Aug 2009 Location: Melbourne, FL iTrader: (0)	I just replaced my belt at 98.8K (living on borrowed time, me thinks!). Old belt still looked pretty good. Was beginning to show some minor fraying along edges. Got Serpentine belt, Drive Belt Tensioner, Drive Belt Idler Pulley and Idler cover from FCP for just under $158. Took about 30 minutes. Tools: Torque wrench Torx sockets: T-60, T-50 E- Socket: E-12 Straight slot screw driver Small Allen wrench to use as locking pin for old tensioner during removal Only removed the intake housing/ducting. Left electric fan assembly in place. Had sufficient space to access everything. If you have big beefy hands, it may be real tight with fan in place. Last edited by Orion4; 05-23-2018 at 12:51 PM..
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08-26-2018, 03:44 PM	#11
Dugster New Member 0 Rep 5 Posts Drives: 2012 F30 335i Join Date: Aug 2018 Location: South AFrica iTrader: (0)	Serpentine belt replacement I have a 2012 F30 335i. I received a "battery not charging" and coolant warning. After checking I noticed that the serpentine belt is completely gone... need to replace it myself, but it seems that its a struggle to find info on Google on how to do it myself. Can anyone assist? Thanks
	Appreciate 0 Quote

09-14-2018, 04:26 PM	#13
Dugster New Member 0 Rep 5 Posts Drives: 2012 F30 335i Join Date: Aug 2018 Location: South AFrica iTrader: (0)	ok... so my serpentine belt has been replaced... along with the crankshaft pulley. I got the car back and the revs were going up and down. I drove the car and all of a sudden it died completely. I immediately pulled off the road. Opened the bonnet and there is oil everywhere and dripping out like crazy. Car wont start. What could it be? It is a 2012 F30 335i Last edited by Dugster; 09-14-2018 at 04:34 PM.. Reason: Model
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09-19-2018, 04:07 PM	#15
jh_f30 Lieutenant Colonel 1306 Rep 1,827 Posts Drives: 2013 335i Sportline Auto RWD Join Date: Aug 2017 Location: Bay Area, CA iTrader: (2)	I'm sitting on a new belt pondering replacing it. If my tensioner and pulleys still look ok (no wobbling) is it absolutely necessary to replace them? Or would it be ok to just replace the belt? __________________ 2013 F30 335i RWD ZF Melbourne Red ~Remus Sport Axleback~VRSF Chargepipe~VRSF Catless Downpipe~GPlus FMIC~HR Sport Springs~Active Autowerke OBD Flash Tune Stage 2~
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