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Jonno



Member Since: 06 Mar 2012
Location: Yorkshire
Posts: 234

United Kingdom 2011 Defender 90 Puma 2.4 HT Santorini Black
2.4 gear change
The gear change on my Puma has never been great, however with the onset of the colder weather it seems to be getting worse.

The shift from 1st to 2nd when cold is very slow and notchy and unless I use plenty of revs in 1st it often crunches into second a bit.

I'm a little puzzled why the box in the Defender is so clunky when Transit shifts are usually as light as a car. I guess the Transit has a lighter drivetrain and dual mass flywheel that the box was designed for.

Jono
Post #466212 24th Oct 2015 6:48pm
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hornet



Member Since: 04 Jan 2010
Location: Western Europe
Posts: 361

Try this; easy to mount.

https://www.defender2.net/gallery/albums/u...uality.pdf

Or:

LTB00166
Subject/Concern: Clutch Noise/Poor Selection
Models:
Defender (LD) 2.4 Puma Diesel Engine. 2.4 Puma Diesel Engine. VIN-range: 7A732615-9A766150
Markets: All
Section: 308-00
Summary:
Potential difficult gear selection and noise in clutch operation.
Cause: Improvements have been made to the specification of the clutch plate and clutch cover to
address both the potentially difficult gear selection and noise during clutch operation
concerns.Suggested customer concern code P24.
Action: Should it become necessary to install the clutch kit assembly, refer to the new procedure
detailed in Global Technical Reference GTR Workshop Manual, section 308-00.
Parts Required:
Description Part Number Quantity
Clutch kit Assembly. URB500080 1
Labour Time:
Operation Description Operation No. Time
Clutch kit Assembly Renew. 33.10.01 3.9 hours
Repair/Claim Coding:
Causal Part: URB500080
ACES Condition
Code:
Post #466338 25th Oct 2015 9:43am
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Jonno



Member Since: 06 Mar 2012
Location: Yorkshire
Posts: 234

United Kingdom 2011 Defender 90 Puma 2.4 HT Santorini Black
Thanks for the info on the gear change solutions.

I'll look into those.


Jono
Post #466693 26th Oct 2015 2:12pm
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Dave-H



Member Since: 08 Feb 2011
Location: Surrey
Posts: 1507

England 2007 Defender 90 Puma 2.4 HT Tonga Green
Edited .... should of read link first Embarassed Guns and Landrovers .... anything else is irrelevant.
Post #466696 26th Oct 2015 2:21pm
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T1G UP



Member Since: 08 Dec 2009
Location: Bath
Posts: 3101

England 2011 Defender 110 Puma 2.4 XS CSW Orkney Grey
decent oil worked for me
Post #466723 26th Oct 2015 4:26pm
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Jonno



Member Since: 06 Mar 2012
Location: Yorkshire
Posts: 234

United Kingdom 2011 Defender 90 Puma 2.4 HT Santorini Black
I changed the oil in the summer for what was recommended on Millers site, at the time it felt better, however now it's almost back to how it was.

The main reason for changing it was the utterly awful gearchange, however when cold this oil doesn't seem much better.

Interestingly when the LR factory fill was drained after 24K miles there were plenty of streaks of copper coloured material coming out with the oil.

I once played with a gearbox on a car going to be scrapped just seeing how much abuse syncros take and after about 30 seconds of grating they were totally destroyed. So the crunch into second on cold changes doesn't bode well for a long gearbox life.

This and a graunching EGR and a VCV causing stuttering when cold all kind of suggests there may be expense ahead ;o(

Jono
Post #466776 26th Oct 2015 6:13pm
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AlanH



Member Since: 15 Mar 2010
Location: WA
Posts: 242

Australia 
Crunching gears are just one of a vast number of things you have to look forward to Jonno. Laughing
AlanH.
Post #467229 28th Oct 2015 10:40am
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o4dn



Member Since: 08 Jan 2010
Location: South West
Posts: 538

France 2009 Defender 90 Puma 2.4 SW Alaska White
I must have been extremely lucky with mine then, because gear change has always been smooth.

Jonno, check the clutch switch maybe, if non-functional it could keep the revs up while de-clutching which can have detrimental effect on gear change.
Post #467232 28th Oct 2015 10:50am
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Jonno



Member Since: 06 Mar 2012
Location: Yorkshire
Posts: 234

United Kingdom 2011 Defender 90 Puma 2.4 HT Santorini Black
Ah well,

I recently saw a mates Navara with its chassis broken in two so crunchy gearboxes and dodgy valves are nothing ! Laughing
Post #467233 28th Oct 2015 10:52am
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Erik256



Member Since: 05 Mar 2013
Location: Tallinn
Posts: 23

Estonia 2007 Defender 110 Puma 2.4 SW Keswick Green
I said this also in another thread but I have battled with crunching gears from the beginning. Especially 1st to 2nd and 2nd to 3rd. I have tried everything short of a box change. Different oils, clutch, the above mentioned spacers and even new syncros. All to no real effect. So if anybody comes up with a solution it would be great to know. At the moment I just live with it and try to change gear really slow and smooth.
Post #467245 28th Oct 2015 11:41am
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17372

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
It is unusual to have these problems on an MT82 box - usually is it slick and smooth, and far better than (for example) the R380. It does suggest that there is a fault of some kind.

Are you sure that the clutch is disengaging fully?
Post #467268 28th Oct 2015 12:47pm
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Erik256



Member Since: 05 Mar 2013
Location: Tallinn
Posts: 23

Estonia 2007 Defender 110 Puma 2.4 SW Keswick Green
As far as I can tell the clutch disengages fine. All other gears other than 2nd and 3rd engage smoothly. I have also adjusted the clutch as per workshop manual and the pedal travel is exactly how it's supposed to be, 130cm from the floor (without mats).

Someone on this forum suggested to drive it without the rubber mats, but that didn't make any noticeable improvement either.

I'm certain that the problem is in the synchros, but cant just figure out what's wrong with them. Some people on this forum have also reported the same issue, so I'm thinking its the gearbox design fault. Also LRO's "Puma" buying article wrote that "...early gearboxes had problems as they'd lose synchromesh, but there were recalls...". Tough the dealership in my country were not aware of any such recalls. I mean other than the ones involving the clutch and the spacers. I have driven only one other puma, also an early one, and it crunched really badly. So it cant be an isolated issue.

I might try the Ford friction modifier next oil change, as suggested in this thread http://www.defender2.net/forum/topic39663.html. Although I'm not holding any high hopes for it.

Anyhow, as I said earlier, I have gotten used to it. I don't fancy changing the whole gearbox just to try if that makes the gearshift smoother. If the box fails totally at some point then I can try a new box. Or convert it to auto Wink
Post #467312 28th Oct 2015 4:05pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17372

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
I am unaware of any recalls on Puma gearboxes (my 2007 has never been subject to any), but if there were it should be a matter of record and possible to establish.

LR doesn't tend to recall vehicles if it can possibly help it, and is more likely to issue a TSB for action "if the customer complains", but I am similarly unaware of any TSBs about gearbox issues except for the ferrules to be fitted in the gearchange housing bushes (as mentioned earlier in this thread).

I tend to take anything written in LRO (or any of the other 'comics') with a pinch of salt - journalistic 'research' is not what it used to be and is nowadays very google-dependent. There is value in citing primary sources in any writing claiming to be authoritative!

It does however sound as though you probably do have a defective gearbox, which I am sure is frustrating in the extreme for you. In the UK, it is now not difficult to source an MT82 box from a low-mileage scrapper, but I imagine such things are scarce for you.
Post #467314 28th Oct 2015 4:23pm
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ter11



Member Since: 28 Oct 2015
Location: Zurich
Posts: 26

Switzerland 2007 Defender 90 Puma 2.4 SVX Station Wagon Santorini Black
Hi all!

I have the exact same gear issues as described by Erik256: 1st to 2nd and 2nd to 3rd need to be changed with much patience, otherwise there is a bit of gear noise and resistance felt in the gear lever when engaging the new gear.

Note that I also have a 2007 model (apprx. 30k miles on the clock).
I hoped that a future clutch replacement might mitigate the problem, but Erik256 has already done that and no good. Incredible that even new syncros have not solved the issue as already tried by Erik256, as the feel on the gear lever definitely feels like lazy syncros.

Waiting for someone who has successfully solved the issue...

Regards,
Ter
Post #467387 28th Oct 2015 8:06pm
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Jonno



Member Since: 06 Mar 2012
Location: Yorkshire
Posts: 234

United Kingdom 2011 Defender 90 Puma 2.4 HT Santorini Black
In my mind the issue with mine does seem like weak syncros, I'm wondering if it is worth trying the very expensive and LR or Ford specific Castrol BOT oil. However it was rubbish with it in to start with so probably not !

The other half has a Focus 1.6 diesel and the gearchange is literally effortless and I was stunned to find it the same in a LWB 2.2 Transit I drove, admittedly the transit had a cable linkage to the gearbox, which I believe was a version of the MT82.

Jonno
Post #467463 29th Oct 2015 8:40am
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