Diagnosis of noise

1
I have started noticing a slight deep rumbling noise coming from the front only when I do a right hand turn not left. Could It be wheel bearings or might it be carrier bearings in the front diff ? Any way of diagnosing more accurately as I have a long trip coming up over Christmas.
2
Nick,
 
Have you replaced your CV joints lately (particularly the front)?
 
I have heard all sorts of noises from CV's and thought they were something else. Bearings fail a lot less frequently than CV's.
 
Cheers,
 
Skott
 
----- Original Message -----
From: nickbellau
Sent: Monday, December 07, 2009 9:15 AM
Subject: [Syncro_T3_Australia] Diagnosis of noise

 

I have started noticing a slight deep rumbling noise coming from the front only when I do a right hand turn not left. Could It be wheel bearings or might it be carrier bearings in the front diff ? Any way of diagnosing more accurately as I have a long trip coming up over Christmas.

3
Sounds like a left wheel bearing.

When you turn right, the load increases on the left wheel bearing.

CVs are usually more of a clunking sound.



> nickbellau <nick.bellgrove@tafesa.edu.au> wrote:
>
> I have started noticing a slight deep rumbling noise coming from the
> front only when I do a right hand turn not left. Could It be wheel
> bearings or might it be carrier bearings in the front diff ? Any way of
> diagnosing more accurately as I have a long trip coming up over
> Christmas.
4

One of the first indication of failing bearings is a rise in temperature. Depending on the amount of wear the rise could be only a few degrees. Sensing the heat build-up with your hand on the stub axel nuts of the two front wheels could tell a temperature difference. A more accurate way is to use an IR gauge. (These are available cheaply – under $20 – I purchased a “Duratrax” on eBay). I was able to diagnose a failing front bearing which just started pitting on the inner race by this method. Do the measuring after a long drive allowing a good build-up of heat.

 

Yurik

 

From: Syncro_T3_Australia@yahoogroups.com [mailto:Syncro_T3_Australia@yahoogroups.com] On Behalf Of nickbellau
Sent: Monday, 7 December 2009 6:16 AM
To: Syncro_T3_Australia@yahoogroups.com
Subject: [Syncro_T3_Australia] Diagnosis of noise

 

 

I have started noticing a slight deep rumbling noise coming from the front only when I do a right hand turn not left. Could It be wheel bearings or might it be carrier bearings in the front diff ? Any way of diagnosing more accurately as I have a long trip coming up over Christmas.