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giacomo.m



Member Since: 06 May 2011
Location: Roma
Posts: 15

Italy 
LT230T info
Hi all,

Defender Puma 110 2.4 Tdci 2010, since I have a problem with disengaging the central differential lock, and on the LT230T transfer it seems to me that there is no plug securing differential lock detent spring an ball, I wanted to know how to adjust the exact engagement and disengagement of the differential lock selector shaft ...
thank you

Giacomo
Post #966622 4th Oct 2022 12:46pm
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giacomo.m



Member Since: 06 May 2011
Location: Roma
Posts: 15

Italy 
Hi,
90 views and no answers, too technical question even for experts .....?
however to be more precise the transfer is: LT230QRS
thank you

Giacomo
Post #966878 6th Oct 2022 1:49pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17443

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
There are two implementations of the detent mechanism, I have no idea why.

This is a TD5 box, with the detent ball and spring just behind the difflock switch.


Click image to enlarge



This is a TDCi box, with the detent ball and plunger fitted from below acting on a forward extension of the selector shaft.



Click image to enlarge
Post #966882 6th Oct 2022 2:40pm
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Dinnu



Member Since: 24 Dec 2019
Location: Lija
Posts: 3422

Malta 2012 Defender 90 Puma 2.2 CSW Santorini Black
From a dirty Puma transfer box.



Click image to enlarge
 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black
Post #966894 6th Oct 2022 3:43pm
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Dinnu



Member Since: 24 Dec 2019
Location: Lija
Posts: 3422

Malta 2012 Defender 90 Puma 2.2 CSW Santorini Black
So on a Puma it is easy to get to from below. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black
Post #966895 6th Oct 2022 3:44pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17443

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
I bet that is not the reason it was moved though, Land-Rover never changed anything just to make access easier! Laughing

I have no idea why it moved. Both the boxes in my post have the same ratios (the TD5 is a Disco2 box) and same internals, and the proximal detent doesn't interfere with the adaptor casing on a Puma. I can only assume that the later one is, for some reason, cheaper to make, although I don't see why this should be. I suppose it might simplify the machining of the casing.
Post #966911 6th Oct 2022 5:11pm
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Dinnu



Member Since: 24 Dec 2019
Location: Lija
Posts: 3422

Malta 2012 Defender 90 Puma 2.2 CSW Santorini Black
Yes, sure not to make our lives easier Rolling with laughter
On the Puma, the diff lock shaft still have the reduced diameter for the detent as in the earlier boxes detent location. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black
Post #966912 6th Oct 2022 5:18pm
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giacomo.m



Member Since: 06 May 2011
Location: Roma
Posts: 15

Italy 
Thank you all,
so do you know if you can adjust the hardness of the insertion of the differential lock lever ?

Giacomo
Post #966939 6th Oct 2022 7:37pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17443

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
It's not something that is usually considered adjustable, but you could probably replace the spring with a softer or harder one, or possibly not screw the plug in so far.
Post #966947 6th Oct 2022 8:07pm
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giacomo.m



Member Since: 06 May 2011
Location: Roma
Posts: 15

Italy 
Thank you blackwolf,
I just have to try......

Giacomo
Post #966969 7th Oct 2022 6:43am
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Dinnu



Member Since: 24 Dec 2019
Location: Lija
Posts: 3422

Malta 2012 Defender 90 Puma 2.2 CSW Santorini Black
If you need to adjust the detent spring, then probably you have a problem somewhere else. I would check the mechanism from the lever to the selector shaft on the transfer case.
Lack of use can cause the shaft to bind. Easy to remove the plate holding the shaft by removing 3 screws. One of these screws is shown in the bottom left corner of Blackwolf's first picture. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black
Post #966970 7th Oct 2022 6:51am
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giacomo.m



Member Since: 06 May 2011
Location: Roma
Posts: 15

Italy 
yes in fact when the lever is in H it takes very little to move it and it goes in N, it seems to me that it has not made the entire stroke to engage the short gears correctly...
Giacomo
Post #967168 9th Oct 2022 1:59pm
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Dinnu



Member Since: 24 Dec 2019
Location: Lija
Posts: 3422

Malta 2012 Defender 90 Puma 2.2 CSW Santorini Black
There is a spring on the diff lock selector shafts which bias the force required to shift in one direction.
Not 100% sure, but I think the spring pushes towards the unlocked position. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black
Post #967178 9th Oct 2022 3:43pm
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Dinnu



Member Since: 24 Dec 2019
Location: Lija
Posts: 3422

Malta 2012 Defender 90 Puma 2.2 CSW Santorini Black
giacomo.m wrote:
yes in fact when the lever is in H it takes very little to move it and it goes in N, it seems to me that it has not made the entire stroke to engage the short gears correctly...
Giacomo


Re reading your post, it looks like your problem is not in the diff lock (shifting the lever to the left) but in the range selection, H-N-L. That is a different shaft and different detent. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black
Post #967179 9th Oct 2022 3:45pm
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giacomo.m



Member Since: 06 May 2011
Location: Roma
Posts: 15

Italy 
Thank you Dinnu
yes problen on the range selection, H-N-L,sometimes the lever comes out of position H and goes to N.....

Giacomo
Post #967212 10th Oct 2022 6:16am
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