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Glen-I



Member Since: 21 Oct 2023
Location: Berkshire
Posts: 35

United Kingdom 
Knock/clunk from drivetrain.
Evening all,

Hate to ask this as I've done numerous searches, but would I like some more insight if at all possible on the type of sound to be expected from the gearbox to transfer box shaft if worn.

My 'new to me' 2014 110 with 32k on the clock has a very intermittent 'feint hollow sounding clonk' which I just can't pin point whether it's from the gearbox or rear diff area.

After a 160mile round trip to Stoneleigh today, it happened about half a dozen times, and always at a junction/pulling away.

I replaced the rear half shafts and flanges as these were worn for 1 piece items which removed the slack, and I thought this would be the issue resolved.

Has anyone experienced if and when the output shaft starts to wear and fail, can the noise be ommited to the rear diff?

I'm wondering if the output shaft moves within the cup on the splines which then resonates down the prop and then any excess play is then heard through the diff??

Just sold my TD5 110 today, hope I'm not going to regret it🤔

Click image to enlarge
Post #1015669 19th Nov 2023 5:31pm
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gcc130



Member Since: 05 Jun 2015
Location: Wiltshire
Posts: 739

A frame ball joint?
Post #1015675 19th Nov 2023 6:19pm
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Glen-I



Member Since: 21 Oct 2023
Location: Berkshire
Posts: 35

United Kingdom 
Forgot to mention, but I've had it up on a 4 poster ramp and I was unable to see or feel any wear or play in the A frame ball joint, the prop UJ's or any other suspension bushes.
Post #1015676 19th Nov 2023 6:32pm
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matchap801



Member Since: 05 Aug 2021
Location: Somerset
Posts: 120

United Kingdom 2009 Defender 90 Puma 2.4 CSW Zermatt Silver
I started with one piece drive shafts, then greased the propshafts, then replaced the a frame ball joint with an adjustable one. Changed the axle, gearbox and transfer box oils. Also new rear shocks and bushes. Each bit got rid of some of the knock and I can live with what is left.
Final fix will be a cluth and output shaft, but need to save up first!!!! 2009 Defender 90 CSW 2.4 TDCI.
Ex Army Mechanic still living the dream.
Post #1015680 19th Nov 2023 7:01pm
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Glen-I



Member Since: 21 Oct 2023
Location: Berkshire
Posts: 35

United Kingdom 
To be honest, I'm going to replace the output shaft (swaying towards the Ashcroft version) and the clutch as a matter of hopefuly eliminating the issue.

Just hoping someone would say that they have had the noise similar to what I described.

My mate laughed at me today and said I'm being fussy?? Maybe.......

It's a 160 mile commute to my office and I'd rather eliminate the issue before I'm stranded on the M40
Post #1015682 19th Nov 2023 7:13pm
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neon1991



Member Since: 26 Mar 2018
Location: Colchester
Posts: 75

United Kingdom 2014 Defender 110 Puma 2.4 USW Firenze Red
front drive flanges are always a source of play. they seem to be dry fit on late pumas
Post #1015728 20th Nov 2023 10:28am
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Glen-I



Member Since: 21 Oct 2023
Location: Berkshire
Posts: 35

United Kingdom 
The front drive flanges seem okay, I checked them when I replaced the rear half shafts.

To be honest, I don't actually feel any play, it's just the noise I'm hearing which is definitely gearbox and the rear diff area.

I'm sure 95% people wouldn't notice it, but I don't think it's right.

I have a track day toy which runs a straight cut Quaife gearbox and that makes all weired and wonderful noises, and whilst 95% people would say its knackered , I know it's fine.

I could be worrying unnecessarily, but I like to solve these things before it becomes a real issue.
Post #1015741 20th Nov 2023 12:22pm
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SilverPuma



Member Since: 27 Oct 2023
Location: Devon
Posts: 35

United Kingdom 2010 Defender 90 Puma 2.4 HT Stornoway Grey
I had the slight clonking (hardly any feel to it though) at relatively low mileage and had the MT82 Upgraded Output shaft kit from Ashcroft fitted which provides the new shaft with wet lubrication. Although the clonk wasn’t a major problem it’s so much nicer now as there is no drive uptake noise at all. Well worth it Thumbs Up 2010 2.4 TDCI Puma Defender 90
Post #1015761 20th Nov 2023 1:58pm
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Glen-I



Member Since: 21 Oct 2023
Location: Berkshire
Posts: 35

United Kingdom 
That reassuring to hear, I've made my mind up to replace it regardless of the condition of mine.

I wonder if some people don't hear the early warning sounds/noises and by the time the noise becomes more apparent its a ticking time bomb??

My mate who came to Stoneleigh yesterday kept laughing as he said it feels like a Rolls Royce inside and that I'm being fussy, but he is used to Landys that he completes trials in, so they all had a hammering and all make some horrendous noises which seem normal to him

Ashcroft will be receiving an order tonight!
Post #1015768 20th Nov 2023 2:12pm
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Glen-I



Member Since: 21 Oct 2023
Location: Berkshire
Posts: 35

United Kingdom 

Click image to enlarge

Guess what I'm doing Saturday afternoon.

What a great looking and well made piece of kit!
Post #1016015 22nd Nov 2023 1:55pm
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Ianh



Member Since: 17 Sep 2018
Location: Essex
Posts: 1997

United Kingdom 
One of the challenges is going to be holding the cup in a static position when you torque the big bolt, as the Ashcroft cup does not have the slots cut into it to use a specific LR or makeshift tool to hold the cup static while you apply the torque to the cup bolt.
Post #1016030 22nd Nov 2023 4:48pm
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Glen-I



Member Since: 21 Oct 2023
Location: Berkshire
Posts: 35

United Kingdom 
All sorted, and soooooo much nicer to drive!



Click image to enlarge


Started it at 1pm and finished at 4:30pm, nice constructive afternoons work.

There is still a noise from the rear end still, but I'm happier I've ruled out yet another Landrover issue/ticking time bomb.

Thanks Ashcroft Transmissions, great solution.
Post #1016371 25th Nov 2023 6:25pm
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LR90XS2011



Member Since: 05 Apr 2011
Location: bickenhill
Posts: 3641

United Kingdom 2011 Defender 90 Puma 2.4 XS CSW Galway Green
looks like it wouldn't have been long till that failed. DEFENDER 90 TDCI XS,

I hope everyone is well and your land rovers make you happy
Post #1016381 25th Nov 2023 7:26pm
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Glen-I



Member Since: 21 Oct 2023
Location: Berkshire
Posts: 35

United Kingdom 
I did wonder that?

Last week I was still a little nervous after selling my TD5 which still felt like the engine/transmission was the better combination.

However my 30mile drive back from my mates workshop today highlighted that I'm heading in the right direction to getting this one sorted.

TD5 vs TDCi are like chalk and cheese.

Remap next!
Post #1016387 25th Nov 2023 8:03pm
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Glen-I



Member Since: 21 Oct 2023
Location: Berkshire
Posts: 35

United Kingdom 
LR90XS2011 wrote:
looks like it wouldn't have been long till that failed.


I cleaned the shaft this morning, and as you rightly say, not long left until complete failure.



Click image to enlarge




Click image to enlarge


You can clearly see how they're worn more so in one direction. I think one enthusiastic exit from a junction would've been the last!

Another Landrover designed door stop to be added to the collection😉
Post #1016411 26th Nov 2023 9:59am
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