Help needed, bad noise when difflock engaged...

[Michele]

Last year I heard this noise coming from my side (driver's side) when turning left and with center difflock engaged.
It's a clear "tlock tlock tlock tlock".
Only when turning left, and with center difflock engaged.
Time went by and I finally stripped the whole hub at the beginning of August, thinking of a worn out CV.
Pulled the Longfield out, CV was fine :confused: (after 5 years of 285/75 SSRs and random 36" 13 TSLs), the splined of the axles (CV side) were worn out instead :confused:, but still straight, not twisted.
It looked weird to me but I thought fair enough considering use and random abuse, and all the Kms covered, and replaced the axle and the CV too, just in case...

Yesterday the noise came back.
Again, only when turning left and with center difflock engaged.
I haven't stripped the hub again (yet), but I'm scratching my head as I can't understand what the CV got to do with center difflock and why on earth only when turning left (if worn, shouldn't it "click" all time??).

If I engage the difflock and turn left on gravel or when in woods (soft/hard ground, sometimes slippery, sometimes not), I hear the noise.
If I engage the difflock and turn on grass, not a whisper.

Let's supposed the new CV and axle are fine...and not causing the noise...what else could it be?
I thought of...worn U-joint at the driveshaft?

I have zero ideas and I'm :mad:

Hints???
What could I check/look at??

[ososlo]

I am afraid I cannot help you with your current problem , but I thought I would take the opportunity to introduce myself as a new member.

I have a 2009 D90 tdci, a 1996 300tdi Disco and a 1956 86inch over here in NZ.

We came over to Melbourne last week to your 4x4 show specifically to see what is available to enable us to get our vehicle sorted for an overland trek through the outback next year.

I was very impressed with the whole off road community over there and the fact that you guys are encouraged to get out and explore...Over here the Dept of Conservation is busy closing access to all the forests.

My question to you guys is:...Is the D90 big enough as a tourer for 2 people?

We toured through Kenya and Tanzania last year in a Disco run by Debs Thiele (Africa Expedition Support) and really enjoyed it...hence we intend to ship our truck over next year and head for the far north.

The cost of getting the Disco up to a touring standard just seems to be getting bigger and bigger!...especially after the Melbourne show!!

I look forward to your comments

Thanks
Graeme Falloon
Gisborne
NZ

[isuzurover]

The noise could be a worn CV - in the ball/cage area. IRC you have the CVs with 17 mm balls?

On the axle front, are your axles martacked/retained? Maybe they are sliding too far in (and hence out of engagement with the CV)?

[Michele]

Hi Ben,
CV had some marks in the bell area but other than that was fine, the axle splines were worn out instead; now I fitted a brand new CV + axle and they only have 1 month of life, and just a day of wheeling!
:confused:

Axles are not martacked nor retained, they don't accept a circlip...
If you remember when we did the Toy CV conversion, we simply slided the axle in and that was all.
I had zero issues since we did the job.

[rick130]

Michele, to test a CV you normally turn to full lock (either way) and that's where you'll hear the noise, you won't get it at the straight ahead (normally)

But why you are only getting a noise turning to the left ?

The tyre isn't rubbing the radius arm, is it ?
or hitting the diff breather tube that comes back up that side radius arm ?

[lambrover]

dose it do it with the diff lock not engaged.

dose it make any noise when normal driving on the road.

did you change both left and right CV's and axles.

when you select center diff lock dose it engage correctly.

[bee utey]

Centre diff lock engaged = more load on the CV's on hard ground. I would question why you don't switch off the centre diff lock as soon as you can after leaving soft ground. Left hand steering lock angles the LH CV joint more than on RH lock so more likely to click. If it doesn't click without the CDL engaged stop worrying.

[Michele]

But why you are only getting a noise turning to the left ?

The tyre isn't rubbing the radius arm, is it ?
or hitting the diff breather tube that comes back up that side radius arm ?

Hi Rick,
1)my point exactly!
2)no and no, tire makes a different noise when rubbing...

[Michele]

Left hand steering lock angles the LH CV joint more than on RH lock so more likely to click. If it doesn't click without the CDL engaged stop worrying.

Ok this makes sense then.
But still I would like to understand why it makes the noise...I mean, I can understand the 5 years old CV to be a tad worn, fair enough, but this is brand new Rovertracks CV and has been running only for 1 month and 99% on tarmac!
I wheeled only 3, 4 days in one month and a half...on 33"s...

And no noise at all without the CDL engaged.

I wanna cry...

[Michele]

dose it do it with the diff lock not engaged.

dose it make any noise when normal driving on the road.

did you change both left and right CV's and axles.

when you select center diff lock dose it engage correctly.

No - no - no (only the LHS) - yes (I guess so)...

[spudfan]

I am afraid I cannot help you with your current problem , but I thought I would take the opportunity to introduce myself as a new member.

I have a 2009 D90 tdci, a 1996 300tdi Disco and a 1956 86inch over here in NZ.

We came over to Melbourne last week to your 4x4 show specifically to see what is available to enable us to get our vehicle sorted for an overland trek through the outback next year.

I was very impressed with the whole off road community over there and the fact that you guys are encouraged to get out and explore...Over here the Dept of Conservation is busy closing access to all the forests.

My question to you guys is:...Is the D90 big enough as a tourer for 2 people?

We toured through Kenya and Tanzania last year in a Disco run by Debs Thiele (Africa Expedition Support) and really enjoyed it...hence we intend to ship our truck over next year and head for the far north.

The cost of getting the Disco up to a touring standard just seems to be getting bigger and bigger!...especially after the Melbourne show!!

I look forward to your comments

Thanks
Graeme Falloon
Gisborne
NZ
Depends on what your aims are. Else where I have posted how in 1990 my wife and I toured around Ireland in a 90 turbo hardtop and slept in the back of it. It was makeshift, we were young, supple and a lot more flexible than we are now but we enjoyed it. If you bring a tent or an awning type exten sion for your 90 the sleeping space will increase. Have a look at Tom Sheppards Vehicle Dependent Expedition for a really well kitted out touring Land Rover 90. Having driven both 90 and 110 models I find that a 110 does give a more comfortable ride. You can fit a lot of kit into a 110 but with all that space you can pack in a lot of stuff that never gets used simply because the space is there. A touring 90 makes you focus a lot more on what you pack in-especially when travelling with the wife. Anyway you are in the correct place for good intelligent advice from well seasoned travellers.

[Michele]

Well I stripped the hub this evening and I found...


...



...bronze bush popped out of stub axle!:lol:
(TOC-TOC-TOC-TOC-TOC)
:bangin:


Too tight tolerance...I just need a lathe and a press now...oh and some TNT...the bush is so tight on the stub axle it won't go...
:mellow:

CV and axle are fine, happy end!

[rick130]

Well I stripped the hub this evening and I found...


...



...bronze bush popped out of stub axle!:lol:
(TOC-TOC-TOC-TOC-TOC)
:bangin:


Too tight tolerance...I just need a lathe and a press now...oh and some TNT...the bush is so tight on the stub axle it won't go...
:mellow:

CV and axle are fine, happy end!

:D

It's just bolts and nuts Michele :twisted:

(glad you've found it ;) )

[Didge]

It's the character of the LR every one talks about, that's it!