2002 GT TDI 150 Alternator

[Gozza]

Hi all,

It appears the bearing in my alternator is on its way out so I have a couple of questions.

Can you replace an alternator bearing only ? if so where can I get one and is it hard to do ?
If not does anyone have an alternator for sale ? and do 1.8T alternators fit the TDI or do I need a TDI alternator ?

Finally is replacing the alternator hard ?

Thanks in advance all

[Steve_PD]

take it you mean the alternator pulley bearing is gone?
if so you need the the alternator pulley about £45 from vw
also need a tool to remove the old pulley, have a look a few threads down there a link to one
be worth changing the belt at the same time
garage charge a an hours labour as they removed the alternator

[Gozza]

Thanks for the reply Steve.

Is there anyway to check it's the alternator pulley ? I have an intermittent squeek that I think is coming from the alternator (I used a metal pole and can hear the squeek/rough sounding bearings in the alternator). Is it a hard job to do ? What's involved, sorry on Iphone at present so hard to search.

Thanks

[Steve_PD]

pretty certain it will be the pulley, can you take it to a vag specialist and get them to diagnose it? its a pretty common fault.
think its take tension off belt, remove belt, undo alternator bolts, use tool to undo pulley bolt, pull pulley off, push new one in and reverse
I didnt know what it was when it happened to my car and replaced the belt and steering pump before taking it to a garage

[Gozza]

Should be able to, there is one not far from me. Out of interest if it goes can it cause any damage ? The aux belt is fairly new so doubt I will change that, car had a rebuild not long ago so think it was replaced then.

With regards to taking the tension off the belt am I right in thinking you wind a bolt of some sort onto the tensioner to reduce the tension ?

Thanks again

[Steve_PD]

mine was like it for months and I do alot of miles so should be fine for a while
use a adjustable spanner to lever the tensioner back, theres a hole which you can get a bolt through to lock it in place. when I took the bolt out it was s shaped

[Gozza]

Cheers for all the info fella I will take it to the garage at the weekend and see what they say. Final question can you only get the pulley bearing from VW ?

[Steve_PD]

not sure never looked anywhere else

[Gozza]

Fair enough, I will call around and get some prices if anyone else sells them of course

Thanks dude

[Jay]

Stolen from the Shalaxy Forum: http://www.fordgalaxy.org.uk/ford/index.php?showtopic=11428&st=0&p=95499&#entry95499

1. Disconnect the battery (we don't want any thermal incidents from shorting the alternator).

2. View the alternator from above.

3. Identify the pulley end and look through the ribs of the body of the alternator.

4. Identify the alternator fan blades which can be seen through the ribs.

5. Insert a small electrical type screwdriver in between the ribs and try to turn the fan clockwise and anticlockwise.

6. If the fan turns freely in one direction and tries to move the pulley in the other it is OK.

7. If the fan tries to turn the pulley in both directions it is faulty and is causing this issue.

N.B. The fan does not require much effort to freewheel.




When stationary or at low speeds, and turning the steering wheel does it make a chirpping/squeal?

I just bought the pulley & belt from VW today £89 inc vat for BOTH, but if you have a new belt you probably won't need one now, especially if it's only started happening.

The tool is £15~ Laser 3307 is the name:
http://www.toolsheduk.com/Q/478/2/4/Alternator-Tool-M10-Spline-1-2inchD.html


Remove belt
Clear space in engine bay if needed (which side is the intake on the MK4?)
put tool in position.
Get someone to hold the socket wrench still while you undo the 19mm nut (it's going to require a strong arm and brute force!)
Fitting is reversal of removal as they say.

I'm going to do mine either tomorrow or the weekend, I'm going to take pics and make a pictoral.