N55 Belt squeak after repair

jan31 · 07-14-2019, 11:47 PM

So, my son's e93 335 had squeal noise from the belt. We replaced tensioner, belt, and 2 pulleys. Everything was fine for like 2 weeks and then the noise started again... it's less than before and usually at start up and when accelerating only. I don't know what's making the belt to slip now... help please!

whyzee125 · 07-15-2019, 12:06 AM

This is probably too obvious but is his oil filter housing gasket leaking? How about the o rings for the oil cooler?

jan31 · 07-15-2019, 12:09 AM

Quote:

Originally Posted by whyzee125

This is probably too obvious but is his oil filter housing gasket leaking? How about the o rings for the oil cooler?

OFH gasket was leaking prior to the belt, tensioner and pulleys repair. It was fixed

Miller335 · 07-15-2019, 12:22 AM

Was belt routed correctly?
Theres been some confusion over the years I've noticed with the exact routing.

In other words you fixed the issue causing it the first time but now created at new one.

Definitely worth checking.

jan31 · 07-15-2019, 12:26 AM

Quote:

Originally Posted by Miller335

Was belt routed correctly?
Theres been some confusion over the years I've noticed with the exact routing.

In other words you fixed the issue causing it the first time but now created at new one.

Definitely worth checking.

[IMG]https://photos.app.goo.gl/oakANvw93Wzycidi6[/IMG]

I used this to install the belt
[IMG]https://photos.app.goo.gl/oakANvw93Wzycidi6[/IMG]

jan31 · 07-15-2019, 12:33 AM

Quote:

Originally Posted by jan31

Quote:

Originally Posted by Miller335

Was belt routed correctly?
Theres been some confusion over the years I've noticed with the exact routing.

In other words you fixed the issue causing it the first time but now created at new one.

Definitely worth checking.

[IMG]https://photos.app.goo.gl/oakANvw93Wzycidi6[/IMG]

I used this to install the belt
[IMG]https://photos.app.goo.gl/oakANvw93Wzycidi6[/IMG]

Don't know how to post pics, sorry. But I used TIS picture yo put it back and also took pics before removing

07-14-2019, 11:47 PM	#1
jan31 First Lieutenant 37 Rep 332 Posts Drives: 2014 F32 428I Xdrive (N26) Join Date: Dec 2012 Location: SA, TX iTrader: (1) Garage List 2014 F32 428I XDRIVE [0.00]	N55 Belt squeak after repair So, my son's e93 335 had squeal noise from the belt. We replaced tensioner, belt, and 2 pulleys. Everything was fine for like 2 weeks and then the noise started again... it's less than before and usually at start up and when accelerating only. I don't know what's making the belt to slip now... help please! __________________
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07-15-2019, 12:06 AM	#2
whyzee125 Brigadier General 2004 Rep 4,030 Posts Drives: Dinan stage 2 335i Join Date: Jul 2014 Location: Chattanooga Tn iTrader: (0)	This is probably too obvious but is his oil filter housing gasket leaking? How about the o rings for the oil cooler?
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07-15-2019, 12:22 AM	#4
Miller335 Colonel 293 Rep 2,189 Posts Drives: 2007 E92 Join Date: Oct 2013 Location: Portland, OR iTrader: (0)	Was belt routed correctly? Theres been some confusion over the years I've noticed with the exact routing. In other words you fixed the issue causing it the first time but now created at new one. Definitely worth checking.
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