Reply With QuoteReplacing the bearing in the tensioner is a plebeian band aid solution. You need to replace the whole tensioner. It isn't outrageously expensive and mine has been good for 80,000km since.
Fossicker
Hi all, after viewing my new disco prior to purchase at a dealers, I asked for the squealing noise to be sorted. They said yes no problem will replace the tensioner bearing.
On collecting the truck the dealer showed me a well worn bearing saying this is what they found, took it out replaced with new but is still making the noise and not to worry its a 300 tdi trait and not terminal. I read up about it and happy that it was nothing major.
A couple of hundred K's down the line and there is now also an annoying rattling noise coming from the same place. On running the car for 30 seconds without the drive belt, both noises are non existent.
I have had the pulley off had a look as was suspicious they didnt replace bearing, but in fact it does look like its new and been replaced.
There is a fair amount of play in the bearing though, and the amount of play varys depending on the rotational positional of the pulley, ie if you turn it 90 degrees theres alot more play than there was in the previous position. There is certainly more play in this pulley when comparing it to the crankshaft pulley which has a tiny amount of back and forth movement. (i've read a small amount of play is fine) The pulley does spin smoothly though, seems
So what does this mean, has this new bearing given up the ghost, and if so why has it given up so quickly, do i need to do the penny coin behind the tensioner mod and then should I replace the bearing with another new one?
Whats the best course of action?
YarnMaster
Replacing the bearing in the tensioner is a plebeian band aid solution. You need to replace the whole tensioner. It isn't outrageously expensive and mine has been good for 80,000km since.
Swaggie
The penny fix as it is called in the uk it worked on mine and a few mates Tdi,s that i mentioned it to , You can gooogle Tdi belt squeal as i did and solve it , I just used a 5c coin behind the tension
Fossicker
My understanding from reading about this issue is its an alignment issue thats why the coin behind the tensioner helps. How does a new tensioner rectify this issue, if indeed it is the misalignment that is the problem. Are new tensioners engineered differently?Originally Posted by B92 8NW
Fossicker
Just so happens i have a spare penny coin (moved over from uk 9 months agoThe penny fix as it is called in the uk it worked on mine and a few mates Tdi,s that i mentioned it to , You can gooogle Tdi belt squeal as i did and solve it , I just used a 5c coin behind the tension
YarnMaster
The issue with alignment is on account of wear between the two sprung halves of the tensioner assembly.
Hi mate, I would also be checking the state of the power steering pump. There is a well known problem with the pump pulley moving in & out on the shaft. This can also be a cause of belt squeal & belt fray.
Fossicker
how critical is the torque value when retightening the tensioner pulley? my torque wrench doesn't torque on left hand thread
i've bought a new pulley bearing as it was only 7 bucks, put it in the pulley and trying to put it back on. have tightened it up a fair bit but can you overtighten?
theres still play in this new bearing although at least it feels an even wobble all around now! i'm guessing this must be normal for this type of bearing.
going to try the coin trick as a temporary measure, till i get more funds to replace the tensioner.
Fossicker
...
Fossicker
Hi, what did you replace with, was it genuine or aftermarket? Cheers
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