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P110D



Member Since: 04 Jul 2023
Location: Munich
Posts: 4

Germany 
Gearbox Rattle in Idle
I would need your help before I take everything apart again...

About 5000 km ago, I replaced the clutch (LOF Power Spec Kit, OnePiece HDShaft). Recently, I've been hearing a rattling noise coming from the gearbox area (directly below the gear lever).

The rattling occurs when I'm standing still and no gear is engaged (neutral). As soon as I move the gear lever towards the gears, the rattling reduces. When I engage the clutch, the rattling completely disappears. Shifting gears works perfectly, and there are no noises related to the problem while driving. What do you think could be the cause of this?

Puma 2,4 2009 160k km
Post #998503 4th Jul 2023 8:19am
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P110D



Member Since: 04 Jul 2023
Location: Munich
Posts: 4

Germany 
https://youtu.be/9aLZqjBtohY

You can hear the noise in the video above Thumbs Up
Post #998504 4th Jul 2023 8:23am
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BrickBox



Member Since: 05 Oct 2021
Location: Wales
Posts: 808

Wales 2008 Defender 110 Puma 2.4 USW Zermatt Silver
If the noise goes with the clutch peddle in then I’d say you have an issue with the clutch plate. Was the clutch aligned correctly etc? 2008 2.4 110 Utility Station Wagon XS.
Post #998506 4th Jul 2023 8:42am
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Roy5695



Member Since: 15 Feb 2014
Location: Cornwall
Posts: 1123

United Kingdom 2011 Defender 110 Puma 2.2 XS DCPU Indus Silver
It’s the layshaft in the gearbox. They chatter quite regularly. Apply slight pressure to the gearstick towards a gear position and it should quieten as the slack is taken up. Just the build tolerances inside the gearbox’s.

You could try the swepco gearbox oil, supposed to help. Or some people have also had the idle speed slightly increased which stops the rattle also. 2011 Defender DCPU 2.2 - https://www.defender2.net/forum/topic30623.html

Instagram - @r22oyp

Roy
Post #998516 4th Jul 2023 10:04am
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17354

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
P110D wrote:
... When I engage the clutch, the rattling completely disappears. ...


What do you mean by "engage the clutch"?
Post #998519 4th Jul 2023 10:06am
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Caterham



Member Since: 06 Nov 2008
Location: Birmingham
Posts: 6298

England 2011 Defender 110 Puma 2.4 XS CSW Stornoway Grey
/\ probably means dis-engaging the clutch ( Very Happy )

which is probably exactly what I would have said (and have said in the past) before reading one of your enlightening posts somewhere Thumbs Up Mr. Green
Post #998534 4th Jul 2023 11:30am
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Caterham



Member Since: 06 Nov 2008
Location: Birmingham
Posts: 6298

England 2011 Defender 110 Puma 2.4 XS CSW Stornoway Grey
Roy5695 wrote:
Or some people have also had the idle speed slightly increased which stops the rattle also.


I believe LR90XS2011 on here had the increased idle speed solution applied.
Post #998535 4th Jul 2023 11:33am
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17354

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
Caterham wrote:
/\ probably means dis-engaging the clutch ( Very Happy )

which is probably exactly what I would have said (and have said in the past) before reading one of your enlightening posts somewhere Thumbs Up Mr. Green


That is my suspicion, hence seeking clarity.

It is surprising how something as simple as a clutch seems to baffle people! For the avoidance of doubt:

    Clutch pedal up = clutch "in" = clutch engaged = engine connected to gearbox.

    Clutch pedal down = clutch "out" = clutch disengaged = engine not connected to gearbox.


The rattle is either the clutch plate self-destructing like genuine ones tend to do, or else is just mainshaft chatter resulting from stiffer springs in the driven plate.
Post #998538 4th Jul 2023 12:22pm
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piechipsandpeas



Member Since: 12 May 2021
Location: Albany, Western Australia
Posts: 208

Australia 2013 Defender 110 Puma 2.2 SW Indus Silver
I also fitted an LOF Powerspec clutch a couple of years ago and the rattle started after about 6 months. I believe it is the gearbox main shaft chatter caused by the stiffer spring in the clutch plate and not the clutch itself. It's annoying but not a huge problem. Doesn't do it when the engine/transmission is cold, only when its warmed up.
Post #998539 4th Jul 2023 12:42pm
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MK



Member Since: 28 Aug 2008
Location: Santiago
Posts: 2413

Chile 2007 Defender 110 Puma 2.4 SW Chawton White
Re: Gearbox Rattle in Idle
It is normal. The center springs are stiffer than OEM so they absorb less the torsional vibration of the crankshaft. It is a trade off situation. Puma 110" SW

.............................................................
Earth first. Other planets later
Post #998542 4th Jul 2023 1:08pm
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P110D



Member Since: 04 Jul 2023
Location: Munich
Posts: 4

Germany 
Ok good to hear. Sounds like same thing.

What I didn´t mentioned was the clonking/ratteling noise when I turn off the enginge while not pressing the cluchpedal. (sounds something is a bit losse)
Do you have the same issue here too?

I already drove more than 1000 km and it doesnt get worse. Its just so anoying that chattering noise and we want to go a few tousand km on holiday...
Post #998543 4th Jul 2023 1:10pm
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P110D



Member Since: 04 Jul 2023
Location: Munich
Posts: 4

Germany 
blackwolf wrote:
P110D wrote:
... When I engage the clutch, the rattling completely disappears. ...


What do you mean by "engage the clutch"?


I mean pressing the cluchpedal Very Happy
Post #998544 4th Jul 2023 1:11pm
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LR90XS2011



Member Since: 05 Apr 2011
Location: bickenhill
Posts: 3640

United Kingdom 2011 Defender 90 Puma 2.4 XS CSW Galway Green
I had exactly the same issue with the same clutch, came about as soon as LOF clutch fitted, explanation is that it is the springs in the clutch (the small ones) , not having the correct rate to manage the engine harmonics and basically rattling the transmission. LOF didn't accept that when I first complained and suggested it was my car but since others have the same issue have now apparently altered the centre springs!

Happens in Neutral with the foot off the clutch, as Caterham states I had my idle increased to 900rpm which made a good difference and now after about 20k miles the noise is pretty much gone.

Must say other than the rattle the clutch has been good so far.

Re the idle speed change I would not go back to 800 rpm, I still get good engine breaking but can pull away in second without touching the throttle and trundle along in slow traffic at idle with next to no hunting, well worth doing if you have a map. DEFENDER 90 TDCI XS,

I hope everyone is well and your land rovers make you happy
Post #998551 4th Jul 2023 2:08pm
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MK



Member Since: 28 Aug 2008
Location: Santiago
Posts: 2413

Chile 2007 Defender 110 Puma 2.4 SW Chawton White
May I ask the "how to" increase idle? Puma 110" SW

.............................................................
Earth first. Other planets later
Post #998558 4th Jul 2023 2:22pm
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LR90XS2011



Member Since: 05 Apr 2011
Location: bickenhill
Posts: 3640

United Kingdom 2011 Defender 90 Puma 2.4 XS CSW Galway Green
The idle speed is set in the software of the ECU, I watched the Tuner IRB adjust it on his lap top, he also made it so with the clutch pressed the engine wont do more than 2000rpm, basically stopping you accidently or deliberately releasing the clutch at high revs and destroying something. DEFENDER 90 TDCI XS,

I hope everyone is well and your land rovers make you happy
Post #998605 4th Jul 2023 5:33pm
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