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miggit Profile
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Date Registered: 11-2020
TOTAL POSTS: 8
Reply | QUOTE
T30 CV's / driveshafts, do they fail at a similar rate?


Hi all,

I've just got a T30 2.2 dCi that's covered 160K (miles, appx 256K Km's) and it had some serious vibrations going on....

On inspection the nearside (left/passenger/ short!) driveshaft was fubar'd the inner cv was running off centre about 1/4 of an inch and was shaking the car to bits! So I fitted a complete new driveshaft... this improved things a lot, but hasn't cured the vibrations totally. The offside / drivers shaft appeared to be ok, but I'm now left wondering if it's also past its' use by date?

Do they often fail as pairs?

Also should I be looking at replacing the short shaft from the gearbox, there didn't appear to be any play in the bearing, however that was a visual / shake it test... there was no dial test indicators used, so I can't be 100% certain!
7/Nov/2020, 11:46 am Link to this post Send Email PM   Send Private Message Blog
 
Revhead Kev Profile
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Date Registered: 10-2006
Location: Mona Vale, Sydney, AUSTRALIA
TOTAL POSTS: 6006
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Re: T30 CV's / driveshafts, do they fail at a similar rate?


Was it a genuine driveshaft replacement ?
Does the vibration occur all the time or only at certain speeds ?

Have a read of my warning about aftermarket driveshafts and the Xtrail here.

---
Kev X450(c) T30 Guru
03 Titanium Ti T30 Series 1 **MODIFIED**
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7/Nov/2020, 1:05 pm Link to this post Send Email PM   Send Private Message Blog
 
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Date Registered: 11-2020
TOTAL POSTS: 8
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Re: T30 CV's / driveshafts, do they fail at a similar rate?


Hi Kev,

I'm cheap, it was an aftermarket driveshaft.....

Vibration / rubbing / binding noise is constant from 5 mph up and increases with speed..

It was greatly reduced when the nearside shaft was replaced and both of the well rusted and warped front brake dust shields were removed, but it is still there emoticon

On the plus side it is now possible to drown out the noise with the stereo emoticon

I had a similar thing on the ML which turned out to be the centre prop bearing... but as the X Trail is louder on left turns and almost silent on right turns, I get the feeling that it's still part of the front drivetrain... If it was the prop shaft it would just be there all the time.

I think it's more than likely the other driveshaft, only it was masked by the totally shot left one... but as they are a lot more expensive than the left shaft I thought I'd ask before shelling out more dosh!
8/Nov/2020, 11:16 am Link to this post Send Email PM   Send Private Message Blog
 
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Date Registered: 05-2017
TOTAL POSTS: 86
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Re: T30 CV's / driveshafts, do they fail at a similar rate?


It's likely seen enough use to have more than drive shafts going on.

Maybe you have already covered the bases, but shafts don't obviously go in pairs. However they do wear in pairs from the factory. A broken boot, or the wrong grease/contamination if changed poorly previously, will cause premature failure. You never really know, quite possibly that the joint was one of the poor OEM parts Kev's mentioned (in the first place).

The play will have shaken the rest of the suspension/drive enough over the last few thousand km, so you are right to be checking the driveline elsewhere. Examine things like:

Unsettled/damaged new (let alone old) rubber bushings
Fettle the play in other joints
Prematurely wear bearings

Note: Front thrust bushings (main arm-body rubber) fail behind first, but OEM parts are cheap and easy to swap, but won't be causing the noise you describe.

---
05 T30 ST-X Auto
205/75x16 A/Ts on 6.5" ET40
200k: Refreshed suspension,fuel, ignition & cooling systems
Often good & dirty as is lifted 35mm on Sachs Automatics & poly bushings
Northern Sydney, NSW
10/Dec/2020, 10:26 am Link to this post Send Email PM   Send Private Message Blog
 
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Date Registered: 11-2020
TOTAL POSTS: 8
Reply | QUOTE
Re: T30 CV's / driveshafts, do they fail at a similar rate?


Well I've just about got it all sorted, having changed the drivers driveshaft it improved things, but didn't cure it.
However I discover that the wheel bearing was a little suspect, so having changed that things are a lot more pleasant when driving...
I can still hear something going on, and suspect that the centre propshaft bearing is a little past its best... But that will keep until we get better weather!
6/Jan/2021, 2:26 pm Link to this post Send Email PM   Send Private Message Blog
 
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Date Registered: 05-2017
TOTAL POSTS: 86
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Re: All expected wear


@160k miles I'd expect all this to be worn on a Diesel.

The Petrol ones probably last a fair bit longer but the torsional load on the drivetrain is harder off the mark with a diesel so people tend to drive them harder off the mark.

After doing bearings, shafts and suspension parts, am wondering when the engine mounts will be past it. Centre bearing still operates fine, but I can see small cracks in the rubber when I look closely

---
05 T30 ST-X Auto
205/75x16 A/Ts on 6.5" ET40
200k: Refreshed suspension,fuel, ignition & cooling systems
Often good & dirty as is lifted 35mm on Sachs Automatics & poly bushings
Northern Sydney, NSW
13/Jan/2021, 9:20 pm Link to this post Send Email PM   Send Private Message Blog
 


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