Not true, the bulletin is released due to a weak tensioner which causes belt squeal. Had this done on my truck at 110000kms, while we were trying to track down a mystery squeal. This didn't fix it, ends up the fan clutch makes a squealing noise when cold. Goes away as soon as engine RPM picks up.Cliff_Jumper wrote:There's a service bulletin for this issue (NTB06-072a)
According to the bulleting, it's an alignment issue not a part issue. Mine is doing the same also only on cold start and cold temperature. It doesn't squeek during the summer time only when the temperature is cold.
So the belt is the culprit? How can a belt make a squeek noise? Mine is squeeling like a pig right now. It usually stops after a couple of miles. Now it squeeks the whole time.trance34 wrote: So i went out and bought another new belt and all the noise is now gone. We shall see what happens in the next few months.
When its really cold out (below 0F) my fan clutch makes a really ugly noise. Sounds like a bearing spinning. Took it to the stealer, and they said I could change the fan clutch (EXPENSIVE), but the noise would most likely return fairly soon. So I'm living with it until the clutch falls apart, which thankfully hasn't happened yet.trance34 wrote:I don't know if the belt was the culprit, or if it was just how the old belt was running with a new tensioner. The squeaking noise I heard defiantly sounded like bearings that were bad that is why I was reluctant to buy a second belt. But after looking at everyting and making sure the pullies were aligned as in the TSB everything was ok, yet I still has the niose. I would say if you changed the belt and it is still doing it then get the tensioner from Courtesy nissan for 31 bucks and a belt from anywhere for 20 and fix it.
Also it says on the TSB to turn the tensioner clockwise. You can't move anyhting on the tensioner clockwise unless you are bolting down the tensioenr. To remove and install the new belt it's CC.
Could be a spun bearing in the alternator. Put a scope on the outer housing while its running, should be pretty apparent.Cliff_Jumper wrote:Well, I changed the belt-tensioner this weekend and she still squeeling like a pig. I checked every pulley and it sounds (90%)like it's coming from the alternator.
I don't want to change the alternator, since its doing what it suppose to be doing except for that annoying sound. I don't think its the pulley since you can't change that part of the alternator.
I'm going to change the belt next and see it that will work.