DIY-Replacing N54 tensioner, idler pulley and serpentine belt

gtje15 · 08-24-2016, 01:51 PM

That's the one, thanks! Those are the torque specs I used and have not had any problems.

meago68 · 02-11-2018, 05:29 PM

Thank you so much.

AG

Kenxleh · 03-25-2018, 09:27 PM

Hey fellas,

I know plenty of folks have benefited from the DIY so your insight is much appreciated.

I'm trying to remove the radiator fan and after unlatching & unscrewing (top left & bottom right), the fan seems to be stuck on the driver side.

Any advice?

Regards,

BashShah · 03-30-2018, 09:22 AM

Quote:

Originally Posted by Kenxleh

Hey fellas,

I know plenty of folks have benefited from the DIY so your insight is much appreciated.

I'm trying to remove the radiator fan and after unlatching & unscrewing (top left & bottom right), the fan seems to be stuck on the driver side.

Any advice?

Regards,

http://www.e90post.com/forums/showthread.php?t=1174183
please see my comments.

HB E90 · 08-08-2019, 10:23 AM

subd

F30lolz · 02-11-2022, 12:22 PM

I’ll accept the flame for bumping a 87 year old thread but I’ll get flamed if I start one right? Anyway, I had my belt, tensioner/pulley replaced around January 2018 at around 77k miles. Currently hovering around 112k miles, just about 35k miles on the belt, not worth replacing as of yet? Had a nightmare that my belt slipped off and you know…toasted N54. WWYD?

Phil325i · 02-12-2022, 03:03 AM

I reckon 50K is about right for a change interval provided (a) you used a genuine BMW belt and (b) you have zero oil contamination. So change at about 125K.

Bush Pilot · 11-08-2022, 01:35 PM

When replacing the belt it's best to pin the tensioner into the compressed position else it's going to be tough to get the belt on while compressing the tensioner. An allen key that fits into the hole works. If the belt won't go on then remove it and try again. I put mine on last night and it all looked good but wouldn't go on. It must have been hung somewhere because when I took it off and tried again it went right on. I put the Continental belt on.

08-24-2016, 01:51 PM	#23
gtje15 New Member 7 Rep 23 Posts Drives: 2007 335i Join Date: Jun 2016 Location: SC iTrader: (0)	That's the one, thanks! Those are the torque specs I used and have not had any problems.
	Appreciate 0 Quote

02-11-2018, 05:29 PM	#24
meago68 Registered 0 Rep 1 Posts Drives: 135 I 2008 Join Date: Oct 2012 Location: United States iTrader: (0)	Thank you so much. AG
	Appreciate 0 Quote

03-25-2018, 09:27 PM	#25
Kenxleh Need for Speed 0 Rep 3 Posts Drives: Silver 335i sedan Join Date: Mar 2018 Location: Wylie, TX iTrader: (0)	*BUMP* Hey fellas, I know plenty of folks have benefited from the DIY so your insight is much appreciated. I'm trying to remove the radiator fan and after unlatching & unscrewing (top left & bottom right), the fan seems to be stuck on the driver side. Any advice? Regards,
	Appreciate 0 Quote

08-08-2019, 10:23 AM	#27
HB E90 Second Lieutenant 60 Rep 211 Posts Drives: 2010 E90 335i Space Gray Join Date: Jul 2015 Location: Huntington Beach CA iTrader: (0)	subd __________________ 2019 F150 S Crew 4x4 3.5 Twin Turbo - newest $$$ pit 2010 E90 SG 335i Sport, Premium, Nav. MHD, VRSF CP, 5" HD FMIC, DCI's, 1 step colder NGK's, Apex EC-7's and Michelin PS4S, Cree 6000k H8 LED Angel eyes SOLD 2011 Toyota Tacoma DC TRDOR 4x4 lifted and armored SOLD 2014 Acura MDX SHAWD wifes
	Appreciate 0 Quote

02-12-2022, 03:03 AM	#29
Phil325i Brigadier General 639 Rep 3,212 Posts Drives: E92 325i MSport Coupe Join Date: Apr 2012 Location: UK South East iTrader: (1) Garage List 2009 BMW 325i Coupe [6.00]	I reckon 50K is about right for a change interval provided (a) you used a genuine BMW belt and (b) you have zero oil contamination. So change at about 125K. __________________ E92 pre-LCI 325i - Ohlins R&T; H&R spacers; M3 strut brace; Swift thrust sheets; 3 x chassis braces; diff brace; N53 V-brace; 034 subframe inserts; BMS clutch stop; BMS CDV; RE g/box mounts; Delrin shift bushes; Saikoumichi OCC; Cyba scoops; BMW Perf Exhaust; HEL s/steel brake hoses; M3 rear spoiler; Recaro Sportster CSs; M3 white dash LEDs; LED Angels; LED side repeaters; BMW Perf black grille; CSL reps; SSDD carbon diffuser; Monster Wrap black roof/clear front
	Appreciate 1 F30lolz6808.00 Quote

11-08-2022, 01:35 PM	#30
Bush Pilot Private 26 Rep 99 Posts Drives: 08 BMW 335i Coupe, 04 BMW 325i Join Date: Dec 2021 Location: Tucson Arizona iTrader: (0)	When replacing the belt it's best to pin the tensioner into the compressed position else it's going to be tough to get the belt on while compressing the tensioner. An allen key that fits into the hole works. If the belt won't go on then remove it and try again. I put mine on last night and it all looked good but wouldn't go on. It must have been hung somewhere because when I took it off and tried again it went right on. I put the Continental belt on.
	Appreciate 0 Quote