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pedrocandrade



Member Since: 30 Sep 2022
Location: Rio de Janeiro
Posts: 26

Brazil 2011 Defender 110 Puma 2.4 SW Epsom Green
Transmission whine in 5th and 6th gear
After 15 years away from landies I got myself a 2011 2.4 Puma. Happy to be back! Very Happy

On to the issue. I'm trying to find the cause of a transmission whine. It appears to be gearbox related. Here's the "evidence" I got:
- The whine is similar to a reverse gear in an old manual transmission with straight teeth
- Happens both in low and high range at the same intensity as the gearbox speeds up its output shaft.
- I can hear it slightly starting in 4th gear, and it gets louder as it goes to 5th and 6th and the engine goes upwards of 2k rpm.
- If I change from 5th to 6th but keep the vehicle at the same speed, the whine keeps at the same tone.
- If I lift the throttle, or go downhill the noise gets much lower
- My mechanic has lifted the Defender and gone through the gears with the wheels up, he used a stethoscope and is pretty confident the sound comes from the gearbox and not the transfer box.
- My Defender has 94k km in the clock.

Have you dealt with a similar issue? Would you bet on busted bearings or gears being the cause? I find it hard to believe that a gearbox can go whiny so early in its life.

Thanks!

UPDATE, video added:


Last edited by pedrocandrade on 2nd Oct 2022 10:44pm. Edited 1 time in total
Post #966308 30th Sep 2022 1:09pm
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Birdy



Member Since: 07 Oct 2011
Location: Côte d'Azur
Posts: 866

France 2011 Defender 110 Puma 2.4 XS CSW Santorini Black
I've lived with a transmission whine in the higher gears for a couple of years (sorry, I'm one of those who believes that if a whine/rumble/noise could come from one of several sources, rather than change this, then that, then the other, wait until the damn thing beaks then you'll KNOW the cause!)

Mine even got noisier on long curves or bends, so I was fearing a big bill. Last month I fitted new tyres for the truck's MOT, it's now quieter than it's ever been. Just a thought...

Peter
Post #966345 30th Sep 2022 8:14pm
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bear100



Member Since: 22 Mar 2010
Location: South Wales
Posts: 1917

Wales 2010 Defender 110 Puma 2.4 USW Santorini Black
Mine has always whined from new when at cruising speeds, to me it’s just one of those land rover niggles 2016 Range Rover Autobiography 4.4 TDV8
2010 110 XS Utility 2.4TDCI
2010 Range Rover Sport TDV8 (gone)
2007 Discovery HSE TDV6 (gone)
1993 110 csw 200 tdi (gone)
1994 90 HT 300 tdi (gone)
1994 discovery 300tdi (gone)
90 hybrid 3.5 v8 (gone)
Range rover bobtail 3.5 v8 (gone)
Post #966346 30th Sep 2022 8:57pm
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pedrocandrade



Member Since: 30 Sep 2022
Location: Rio de Janeiro
Posts: 26

Brazil 2011 Defender 110 Puma 2.4 SW Epsom Green
Yeah it might be that I'll have to learn to live with it until something breaks.

Doesn't seem to be the tires though, as the noise is equal in 6th gear low range at ~40kph and 6th gear high range at 100-110kph
Post #966348 30th Sep 2022 9:00pm
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LR90XS2011



Member Since: 05 Apr 2011
Location: bickenhill
Posts: 3643

United Kingdom 2011 Defender 90 Puma 2.4 XS CSW Galway Green
Id speak to Ashtranz on this forum.
It could be a bearing on the way out.
Failure may destroy the whole gearbox.
Have you drained the gearbox oil through a cloth and over a magnet to see what metal is in it? DEFENDER 90 TDCI XS,

I hope everyone is well and your land rovers make you happy
Post #966352 1st Oct 2022 6:12am
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MK



Member Since: 28 Aug 2008
Location: Santiago
Posts: 2420

Chile 2007 Defender 110 Puma 2.4 SW Chawton White
My 2007MY 110" had a loud whine in 6th from new. After a short while the dealer repleced both, the transfer case and gearbox due to other issues, by reman units. So brand new gearboxes can have mesh problems. Puma 110" SW

.............................................................
Earth first. Other planets later
Post #966353 1st Oct 2022 6:16am
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spudfan



Member Since: 10 Sep 2007
Location: Co Donegal
Posts: 4700

Ireland 
That "whine" is probably the Mrs telling you to keep an eye on your speed.... 1982 88" 2.25 diesel
1992 110 200tdi csw -Zikali
2008 110 2.4 tdci csw-Zulu
2011 110 2.4 tdci csw-Masai
Post #966425 2nd Oct 2022 10:53am
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pedrocandrade



Member Since: 30 Sep 2022
Location: Rio de Janeiro
Posts: 26

Brazil 2011 Defender 110 Puma 2.4 SW Epsom Green
Thanks for all the replies. Here's a short video I recorded today with the whine in all it's glory. I hope it helps you understand what I'm talking about:



This was recorded in low range. The same whine happens in high range, but obviously at much higher speeds.

Have you heard something similar? Any idea of the cause? Is it okay to "let it break" or should I intervene right away?

Thanks again.
Post #966457 2nd Oct 2022 9:59pm
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MK



Member Since: 28 Aug 2008
Location: Santiago
Posts: 2420

Chile 2007 Defender 110 Puma 2.4 SW Chawton White
Have you checked the transfer oil and drain plug? Puma 110" SW

.............................................................
Earth first. Other planets later
Post #966459 2nd Oct 2022 10:05pm
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pedrocandrade



Member Since: 30 Sep 2022
Location: Rio de Janeiro
Posts: 26

Brazil 2011 Defender 110 Puma 2.4 SW Epsom Green
Yes! Both the gearbox and transfer box oils were just replaced. There were no signs of debris in the old, discarded oils, but I cannot be sure that there wasn’t damage in the past. As I explained in the first post, this Defender is a recent purchase.
Post #966461 2nd Oct 2022 10:41pm
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spudfan



Member Since: 10 Sep 2007
Location: Co Donegal
Posts: 4700

Ireland 
The maingear box must not have more than 2.2 litres of oil put into it. As it is on a slope it will hold more than this if the filler plug is used as the oil level. Land Rover say than over filling can cause the gearbox to over heat and damage it.
Only the correct specification oil to GL4 must be used. If GL5 is used Land Rover say that it will react with some of the components in the gearbox and damage them.
So if in the past your Land Rover has had the main gearbox over filled and GL5 specification oil used, it could have been damaged.
Get the main gearbox oil level checked. If it is to the filler plug level, drain it and refill with 2.2 litres of GL4 specification oil.
I use Comma MVMTF Plus 75W-90 which is to GL4. 1982 88" 2.25 diesel
1992 110 200tdi csw -Zikali
2008 110 2.4 tdci csw-Zulu
2011 110 2.4 tdci csw-Masai
Post #966462 3rd Oct 2022 12:00am
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Birdy



Member Since: 07 Oct 2011
Location: Côte d'Azur
Posts: 866

France 2011 Defender 110 Puma 2.4 XS CSW Santorini Black
Yeah, have to agree it was a but of a strange noise...

BUT, do you often rev to more than 3,000 for long periods? I certainly don't, even on a motorway in 6th any increase in speed by thrashing the truck above 2,500 revs is pointless when I have to re-fuel that much sooner.

Personally, I'd go along with what's been previously suggested, namely drain and refill the gear- and transfer boxes with the correct amount of good quality oil of the correct specification. And then drive it until whatever is causing the noise finally gives up the ghost. It could even be something like a loosely-fitting roller bearing cage which could, despite being noisy, outlive the whole vehicle.

Perhaps I'm biased, but every time a garage fix HASN'T worked ("Oh it wasn't the relay as we thought, we'll have to try changing the ..."), they haven't offered to re-fit the non-faulty part and refund my money!

Peter
Post #966509 3rd Oct 2022 2:50pm
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MK



Member Since: 28 Aug 2008
Location: Santiago
Posts: 2420

Chile 2007 Defender 110 Puma 2.4 SW Chawton White
Furthermore, I would use a 85w140 ( or straight 140 if exists) oil in the transfer case and test. If noise level is still there then the source of the noise is clear. Puma 110" SW

.............................................................
Earth first. Other planets later
Post #966513 3rd Oct 2022 3:33pm
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Dinnu



Member Since: 24 Dec 2019
Location: Lija
Posts: 3421

Malta 2012 Defender 90 Puma 2.2 CSW Santorini Black
Are the 5th and 6th on the MT82 to the front of the gearbox? Thats what I am understanding from the diagrams. If noise is predominantly from 5th and 6th, then it suggests a bearing close to those gears? 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black
Post #966521 3rd Oct 2022 4:14pm
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pedrocandrade



Member Since: 30 Sep 2022
Location: Rio de Janeiro
Posts: 26

Brazil 2011 Defender 110 Puma 2.4 SW Epsom Green
Thank you all for the comments and suggestions. We'll get our hands dirty here soon and I'll report any news. Cheers!
Post #966917 6th Oct 2022 5:42pm
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