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awesomesauce



Member Since: 06 Oct 2018
Location: USA
Posts: 7

Should I change the Haldex and front differential fluid?

Hi all - I have a 2012 LR2 with 150,000 miles on it, and love it so much that I'm trying to do all possible maintenance to prolong its life as long as possible!

I've recently done:
- oil and filter
- air filter
- rear differential oil
- automatic transmission fluid flush
- coolant flush
- spark plugs
- brake bleed
- power steering fluid reservoir and fluid change

But I'm struggling/debating if I should do any maintenance to the Haldex and/or front differential. Also, I've read about a "transfer case": is that the same thing as the Haldex, or something separate?

Is the front differential done the same way as the rear? (Remove fill plug, vacuum out the old fluid, and refill until it overflows?) Anything special about it? I can't seem to find any videos or instructions.

Likewise, I found a video on the haldex, but am not feeling very confident in it. Any advice would be much appreciated!

Are there any other maintenance items I should/could be doing? Thank you!

Post #449323 18th May 2025 2:32 pm
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BossBob



Member Since: 30 Sep 2010
Location: Bristol
Posts: 1480

England 2007 Freelander 2 TD4 GS Manual Baltic Blue

The front differential is part of the gearbox. I think you mean the Power Takeoff Unit. Yes, that and the Haldex will both benefit from fluid changes though the Haldex also has filters and a pump that need looking at.

Post #449324 18th May 2025 4:26 pm
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jules



Member Since: 13 Dec 2007
Location: The Wilds of Warwickshire
Posts: 5355

United Kingdom 2014 Freelander 2 SD4 SE Auto Firenze Red
Re: Should I change the Haldex and front differential fluid?

awesomesauce wrote:
I can't seem to find any videos or instructions.

Likewise, I found a video on the haldex, but am not feeling very confident in it. Any advice would be much appreciated!

Are there any other maintenance items I should/could be doing? Thank you!


Download the free JLR workshop manual - its a superb resource.

https://www.dropbox.com/scl/fi/z13lctkhyk5...e5&e=1 Jules

Post #449343 19th May 2025 2:35 pm
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jules



Member Since: 13 Dec 2007
Location: The Wilds of Warwickshire
Posts: 5355

United Kingdom 2014 Freelander 2 SD4 SE Auto Firenze Red

There are two versions of the Haldex in the FL2 - Gen 3 and Gen 4 - the pump motor (for the pump filter) and replaceable fiilter are in different positions.


Click image to enlarge
 Jules

Post #449344 19th May 2025 2:37 pm
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jules



Member Since: 13 Dec 2007
Location: The Wilds of Warwickshire
Posts: 5355

United Kingdom 2014 Freelander 2 SD4 SE Auto Firenze Red

The PTU (front differential) doesnt have a drain plug so you need to suck the old oil out via the filler plug.
My advice - get the oil hot by driving it, makes it easier to suck it out - access is awkward. Jules

Post #449345 19th May 2025 2:42 pm
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BossBob



Member Since: 30 Sep 2010
Location: Bristol
Posts: 1480

England 2007 Freelander 2 TD4 GS Manual Baltic Blue

The PTU isn’t a differential. That is taken care of in the gear box for the front wheels. The PTU is a bevel gear set which takes the drive from the transverse rotating engine/gearbox through 90° to the propshaft and on to the Haldex and differential at the back axle.

Post #449349 19th May 2025 6:42 pm
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awesomesauce



Member Since: 06 Oct 2018
Location: USA
Posts: 7

Thank you all! That manual is a beast!

So, if I'm understanding correctly, there is a PTU to change the oil in (both sucking out and refilling via the same plug), and the Haldex (for which there is a filter to change, and fluid - again, in and out via the same plug).

Post #449350 19th May 2025 10:07 pm
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jules



Member Since: 13 Dec 2007
Location: The Wilds of Warwickshire
Posts: 5355

United Kingdom 2014 Freelander 2 SD4 SE Auto Firenze Red

BossBob wrote:
The PTU isn’t a differential. That is taken care of in the gear box for the front wheels. The PTU is a bevel gear set which takes the drive from the transverse rotating engine/gearbox through 90° to the propshaft and on to the Haldex and differential at the back axle.


You are indeed correct. My mistake for using the wrong term. Jules

Post #449351 19th May 2025 10:21 pm
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jules



Member Since: 13 Dec 2007
Location: The Wilds of Warwickshire
Posts: 5355

United Kingdom 2014 Freelander 2 SD4 SE Auto Firenze Red

awesomesauce wrote:
Thank you all! That manual is a beast!

So, if I'm understanding correctly, there is a PTU to change the oil in (both sucking out and refilling via the same plug), and the Haldex (for which there is a filter to change, and fluid - again, in and out via the same plug).


Yes, the PTU is attached to the gearbox and the haldex sits between the propshaft and the rear diff to which it is bolted.

The issue with the haldex is that besides the replaceable filter there is a small filter on the pump which gets clogged. The filter is cleanable when unscrewed from the pump after the pump has been removed from the haldex. Dont remove all 3 screws or else all the little parts inside the pump will fall out (guess how I know Embarassed )




However some FL2's have a large flange on the end of the prop shaft which is so close to the pump it prevents the pump being removed and the propshaft will then need to uncoupled from the haldex (as was the situation in my case).




I had the large flange on mine replaced with the smaller earlier version to aid future servicing. Jules


Last edited by jules on 21st May 2025 10:10 am. Edited 1 time in total

Post #449352 19th May 2025 10:33 pm
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awesomesauce



Member Since: 06 Oct 2018
Location: USA
Posts: 7

Thank you, Jules!

Post #449363 21st May 2025 12:11 am
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jules



Member Since: 13 Dec 2007
Location: The Wilds of Warwickshire
Posts: 5355

United Kingdom 2014 Freelander 2 SD4 SE Auto Firenze Red

And just to round things off. here is the newly attached older/smaller flange and new pump for comparison.


 Jules

Post #449368 21st May 2025 8:12 pm
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z1234567890



Member Since: 06 Aug 2018
Location: DXB
Posts: 57

United Arab Emirates 2008 LR2 i6 HSE Auto Alaska White

following

Post #449802 8th Jun 2025 2:54 pm
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Lakelander



Member Since: 07 Nov 2019
Location: Cumbria
Posts: 265

United Kingdom 2013 Freelander 2 SD4 XS Auto Orkney Grey
Re: Should I change the Haldex and front differential fluid?

jules wrote:
awesomesauce wrote:
I can't seem to find any videos or instructions.

Likewise, I found a video on the haldex, but am not feeling very confident in it. Any advice would be much appreciated!

Are there any other maintenance items I should/could be doing? Thank you!


Download the free JLR workshop manual - its a superb resource.

https://www.dropbox.com/scl/fi/z13lctkhyk5...e5&e=1


Is there a version of this for facelift models 2013 /2014? FL2 SD4 XS 2013 Orkney Grey

Post #449815 9th Jun 2025 8:33 am
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jules



Member Since: 13 Dec 2007
Location: The Wilds of Warwickshire
Posts: 5355

United Kingdom 2014 Freelander 2 SD4 SE Auto Firenze Red

Unfortunately not.

There is little difference between models, for most parts - most are obvious.
Biggest difference is the wiring and the later wiring diagrams are available. Jules

Post #449820 9th Jun 2025 3:42 pm
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jules



Member Since: 13 Dec 2007
Location: The Wilds of Warwickshire
Posts: 5355

United Kingdom 2014 Freelander 2 SD4 SE Auto Firenze Red

FWIW
Part numbers for all models can be found here :

https://parts.jaguarlandroverclassic.com/p...and-rover/ Jules

Post #449821 9th Jun 2025 3:47 pm
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