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Zixxer



Member Since: 04 Dec 2019
Location: Tipperary
Posts: 17

Ireland 2009 Defender 110 Puma 2.4 HT Keswick Green
Definitive answer on MT82 gearbox fill plug!
Hello lads hope you’re all well - can I get a definite answer on the correct refill plug for the MT82.

I’ve seen people use at least two different points to fill with the 2.2 litres of the correct oil.

I think over the years I’ve actually used both and still going strong, but I’d like to know which you use.

Thanks
Post #951529 4th May 2022 9:39am
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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

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Post #951546 4th May 2022 11:26am
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Dinnu



Member Since: 24 Dec 2019
Location: Lija
Posts: 3403

Malta 2012 Defender 90 Puma 2.2 CSW Santorini Black
What happens if you fill form the “Not fill plug hole”? 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black
Post #951574 4th May 2022 4:55pm
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Ianh



Member Since: 17 Sep 2018
Location: Essex
Posts: 1972

United Kingdom 
Some more pics of the fill plug as shown above. https://www.defender2.net/forum/topic6438.html

And for a MT82 oil change it’s 2.2L for a 2.4, and 2.4L for a 2.2, how weird is that for several reasons.

Here is the MT82 manual, have a look to see if the non fill plug is also viable, noting if it makes no difference in where the oil ends up it may be that the threaded hole is not designed to have the plug removed and replaced several times. Note this is the MT82 mustang manual, same gearbox but they fill with 2.6L of transmission oil.

https://onedrive.live.com/?authkey=%21ADpJ...mp;o=OneUp
Post #951577 4th May 2022 5:28pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17320

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
The biggest risk in removing the wrong thing to fill the box arises from the fact that most of the things that resemble plugs are in fact the pivots for the selector forks inside the box. There is no guarantee if you remove one of these unintentionally that you will be able to get it back in if the selector fork moves, and that probably means a gearbox strip-down.

All the selector fork pivots are symmetrical on both sides of the box, which does make it a bit easier to figure out if it is a pivot or not. They are items 3 and 5, 4 and 6, and 7 and 8 in the diagram linked below. The drain plug is item 1, the filler plug is item 2.

https://www.defender2.net/gallery/albums/u...%2BP32.pdf

Since the MT82 in the Defender is a measured-quantity fill, not a fill-to-overflow type, it doesn't really matter where you put the oil in provided that (a) you put in the right amount and (b) you don't do irreparable damage in the process.


Last edited by blackwolf on 4th May 2022 6:15pm. Edited 1 time in total
Post #951585 4th May 2022 6:01pm
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Ianh



Member Since: 17 Sep 2018
Location: Essex
Posts: 1972

United Kingdom 
Very good point on the pivots blackwolf. I’ve only ever used the designated fill plug, even though it’s in a fairly awkward location.

Last edited by Ianh on 4th May 2022 6:07pm. Edited 1 time in total
Post #951586 4th May 2022 6:06pm
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X4SKP



Member Since: 29 Nov 2013
Location: Berkshire
Posts: 2295

United Kingdom 2010 Defender 90 Puma 2.4 SW Stornoway Grey
Hello Zixxer

The advice so far looks correct to me...


Click image to enlarge


Either a Torx T50 or Hex H8 for both the Filler and Drain...


Click image to enlarge


Didn't know that the 2.4 and 2.2 tdci MT82 had different Service Fills, as yours a 2.4 then its 2.2lts
(you could go mad writing this stuff... Shocked )


Click image to enlarge


The main thing (as has been said) is to ensure to put only the correct measured quantity in... another 'top tip' (told to me) is to take the Fill Plug out successfully first... before you drain the Gearbox
(Good advice for any oil change area)

Good Luck SKIP
https://www.defender2.net/forum/topic83242.html
Post #951587 4th May 2022 6:07pm
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lonewolf



Member Since: 23 Oct 2013
Location: North East England
Posts: 209

United Kingdom 2010 Defender 90 Puma 2.4 CSW Zambezi Silver
/\ /\ /\

Sound advice there Skip 👍
Post #951591 4th May 2022 6:39pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17320

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
X4SKP wrote:
... Didn't know that the 2.4 and 2.2 tdci MT82 had different Service Fills ...


It is hard to understand why this should be so! Confused
Post #951600 4th May 2022 7:38pm
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Ianh



Member Since: 17 Sep 2018
Location: Essex
Posts: 1972

United Kingdom 
It is odd, but in the owners manual for the 2.4 on fluid change it states 2.2 L, yet in the owners manual for the 2.2 it states 2.4L for fluid change. Plus I did the first gearbox oil change on my 2.2, measured the drained fluid, and it was exactly 2.4 litres !

Also in the mustang gearbox manual it states 2.6L !
Post #951602 4th May 2022 7:47pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17320

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
I suppose that it is possible that it is a typo or error in the spec. Stranger things have happened, and JLR's attention to detail was not good in the last years of the classic Defender.
Post #951603 4th May 2022 7:59pm
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Dinnu



Member Since: 24 Dec 2019
Location: Lija
Posts: 3403

Malta 2012 Defender 90 Puma 2.2 CSW Santorini Black
Those are very clear answers. I have used the “Not the fill plug” to re fill by box. It does look like a plug, and had no ill effects.

Interestingly, the “Not the fill plug” does not seem to show in this diagram: https://www.defender2.net/gallery/albums/u...%2BP32.pdf

Part #4, a shift fork pivot is right next to it though, and can be see in the picture in the 2nd post, but uses a larger size LN key.

Perhaps the “Not the fill plug” was an addition while the manuals guy was on vacation. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black
Post #951624 5th May 2022 5:36am
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Zixxer



Member Since: 04 Dec 2019
Location: Tipperary
Posts: 17

Ireland 2009 Defender 110 Puma 2.4 HT Keswick Green
Excellent info lads thanks a million
Post #951626 5th May 2022 6:33am
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X4SKP



Member Since: 29 Nov 2013
Location: Berkshire
Posts: 2295

United Kingdom 2010 Defender 90 Puma 2.4 SW Stornoway Grey
Dinnu wrote:
Those are very clear answers. I have used the “Not the fill plug” to re fill by box. It does look like a plug, and had no ill effects.

Interestingly, the “Not the fill plug” does not seem to show in this diagram: https://www.defender2.net/gallery/albums/u...%2BP32.pdf

Part #4, a shift fork pivot is right next to it though, and can be see in the picture in the 2nd post, but uses a larger size LN key.

Perhaps the “Not the fill plug” was an addition while the manuals guy was on vacation.


Hello Dinnu

You are right I believe... I spoke to my Independent about this today...
(as I was there at the Parts Counter, stocking up on Service Items)

The Not the Fill Plug looks to be exactly the same as the (genuine) Fill Plug T50 or H8 and is the same depth Casing Screw... I pondered over this 'arrangement' when undertaking the 1st All Oils Change on my 90... The MT82 Workshop Manual pointed me in the right direction.

The Set Screw 'next door' is Hex H12 Screw...and appears to be internal pivot point...
so leave well alone Shocked


Click image to enlarge


I know Land Rover 'inherited' this arrangement from Ford but it is somewhat confusing...
Why didn't Ford just add relief Casing Graphics saying Fill Point at the spot they identify
in the workshop manual... Question

My Independent confirmed either (Not the Fill Plug or Fill Plug) can be used
but be sure not to disturb the Pivot Points... Shocked

As for the differing Service Oil Fills recommended, the only thought I have... is if this is the result of differing internal Gears / Mechanisms 'taking up' more or less internal volume and there by requiring the adjustment the Oil Volume to achieve a 'balanced' operational working temperature and pressure within the Gearbox... just a thought. SKIP
https://www.defender2.net/forum/topic83242.html
Post #951661 5th May 2022 1:58pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17320

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
The 2.2 and 2.4 gearboxes are identical and indistinguishable in every respect and are fitted in the sample place and at the same angle. The only reasons I can think of for the fill amounts being different are (a) someone goofed, or (b) some problem was found with the 2.4 oil level. Otherwise I can't see it matters, there are both 2.4 and 2.2 boxes with high mileages working well.
Post #951669 5th May 2022 2:41pm
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