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Scrawf

Member Since: 24 Jul 2016
Location: Matlock
Posts: 25

2010 Defender 90 Puma 2.4 XS CSW Tamar Blue

MT82 drain plug - should it have a crush washer?

Hi guys

Just wondered if the drain and fill plugs for the MT82 gearbox on a Puma should have a crush washer or not? I swapped the oil today and neither of them did but I notice that there is a small drip developing on the drain plug

I tried nipping it up a bit but it still seems to leak.

BTW the gear change is much better since the oil change!

Thanks

Scrawf

25th Jul 2016 8:28pm

Bluest

Member Since: 23 Apr 2016
Location: Lancashire
Posts: 4206

2007 Defender 110 Puma 2.4 XS CSW Java Black

There is no washer I don't think. I used PTFE tape on the threads to ensure a good seal.

25th Jul 2016 8:55pm

ericvv

Member Since: 02 Jun 2011
Location: Near the Jet d'Eau
Posts: 5816

2009 Defender 110 Puma 2.4 SVX Station Wagon Santorini Black

No mention of a washer here...
http://www.defender2.net/forum/topic8707.html You never actually own a Defender. You merely look after it for the next generation.
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https://www.youtube.com/watch?v=XvAsz_ilQYU
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https://m.youtube.com/watch?v=dxwjPuHIV7I
https://vimeo.com/201482507
https://www.youtube.com/watch?v=ZSixqL0iyHw

26th Jul 2016 4:19am

AlanH

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

I just use a drop or two of gasket sealant on them and the drain plug. They never leak so I'm happy with that.
AlanH.

26th Jul 2016 8:19am

Martin
Site Admin

Member Since: 02 Apr 2007
Location: Hook Norton
Posts: 6604

2015 Defender 90 Puma 2.2 XS CSW Montalcino Red

No washer shown on the parts catalogue.

1988 90 Td5 NAS soft top

2015 D90 XS SW

26th Jul 2016 10:35am

Scrawf

Member Since: 24 Jul 2016
Location: Matlock
Posts: 25

Many thanks. PTFE has stopped the drain plug leaking. Just have to find out where the other leak is coming from!

Scrawf

28th Jul 2016 1:15pm

HardCharger

Member Since: 03 Mar 2013
Location: Manila
Posts: 732

2011 Defender 110 Puma 2.4 SW Stornoway Grey

Maybe replace it with a Diff Lock Drain?

29th Jul 2016 2:35am

macfrank

Member Since: 05 Nov 2015
Location: somewhere in the north
Posts: 1071

2015 Defender 110 Puma 2.2 SW Keswick Green

I've just had the oil changed and they used a copper washer.
I can now say that you still have to tighten the plug correctly to stop it from leaking

I tightned it to 35Nm for now (no leak so far), but the LR workshop manual says 50Nm.
Would that be ok or too much for the washer?

Click image to enlarge

19th Nov 2023 4:26pm

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20300

What are you all using for the threads with these plugs?

Options I’m considering are;

Hylomar blue universal, yellow, PTFE tape, loctite 222.

Probably not the 222 as that’s a light duty thread lock, not so much of a sealer. (Doubt it would play well with oils either, but good for general jobs).
Hylomar blue / yellow is very much the same thing almost.
Then there is PTFE tape.

I’m 50/50 between Hylomar blue and PTFE tape, probably leaning towards the latter.
I see BlueST already posted regards PTFE tape.

Anyone have any thoughts ? ⭐️⭐️God Bless the USA 🇬🇧🇺🇸 ⭐️⭐️

4th Sep 2024 7:31pm

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20300

Double post* ⭐️⭐️God Bless the USA 🇬🇧🇺🇸 ⭐️⭐️

4th Sep 2024 7:32pm

macfrank

Member Since: 05 Nov 2015
Location: somewhere in the north
Posts: 1071

I don't know what my workshop used other than the copper washer. On my motorcyles a washer alone was always sufficient

Regarding the torque it seems 50Nm as stated in the LR workshop manual is wrong and it's actually 35Nm - same as the filler plug. That information is from an experienced mechanic I trust and Getrag's MT82 manual. What's your experience?

4th Sep 2024 8:15pm

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20300

I think for the size 35NM seems about right for both fill and drain, I think 50 is too much for the drain, which is up nearer the diff plug torque which is 60NM, those plugs are much much larger in the diffs.
(Transfer box 30NM for both filler and drain).

There are some errors in the WSM for sure.

It’s strange that for a 2.4 puma the MT82 is stated as taking 2.4L Qty.
The 2.2 Puma takes 2.2L.
Despite the fact that both are the same transmission.

I believe the 2.4L figure is stated as dry fill and 2.2L service fill, however, the above is stated in the WSM.

Regards threads I tend to just go with the Hylomar that’s already on diff plugs, if they ever weep or any issues switch over to PTFE tape, both work without any problem at all ⭐️⭐️God Bless the USA 🇬🇧🇺🇸 ⭐️⭐️

4th Sep 2024 10:11pm

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