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Wales
by Joske Vermeule, September 1
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Forums39
Topics49,912
Posts838,160
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Most Online1,063
Jun 14th, 2026
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Joined: Mar 2022
Posts: 81 Likes: 1
Just Getting Started
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OP
Just Getting Started
Joined: Mar 2022
Posts: 81 Likes: 1 |
In preparation for changing the rear differential oil I was under the car but the drain plug isn’t obvious.
There are a ring of bolts which I assume bolt on the diff cover so wondering if the bottom one acts as a drain plug?
Would anyone know what the axle type is also?
Thanks.
Kevin Davies
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Joined: Mar 2017
Posts: 2,274 Likes: 41
Talk Morgan Expert
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Talk Morgan Expert
Joined: Mar 2017
Posts: 2,274 Likes: 41 |
Just looking through some pics of my 2016. 4/4, and I can’t see any drain plugs either ? Perhaps mine was pumped out, in last picture here 2 years ago at Williams. I’m sure someone will be along soon with the answer ![[Linked Image]](https://tm-img.com/images/2023/04/05/835D2E55-DEA6-4C36-B14D-AF629D9EE62D.jpeg) ![[Linked Image]](https://tm-img.com/images/2023/04/05/2808E9AF-BCBE-4795-9757-6471BC196067.jpeg) ![[Linked Image]](https://tm-img.com/images/2023/04/05/E7CD8426-4422-4C3F-A483-030ACD597C19.jpeg)
Craig Jezz
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Joined: Nov 2015
Posts: 8,703 Likes: 501
Just barreling along Needs to Get Out More!
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Just barreling along Needs to Get Out More!
Joined: Nov 2015
Posts: 8,703 Likes: 501 |
In preparation for changing the rear differential oil I was under the car but the drain plug isn’t obvious.
There are a ring of bolts which I assume bolt on the diff cover so wondering if the bottom one acts as a drain plug?
Would anyone know what the axle type is also?
Thanks. Yes, bottom one is drain plug (NON'T drain it yet) Make sure you can get to the filler plug, it's about half way up the rear cover, depending on the age some use a large AF spanner (or good adjustable) some use a sort of recessed allen key hex socket, make sure you can access and loosen the filler BEFORE draining, or you'll end up with an empty diff & be stuck at home
Jon M
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Joined: Jan 2018
Posts: 412 Likes: 10
Learner Plates Off!
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Learner Plates Off!
Joined: Jan 2018
Posts: 412 Likes: 10 |
On my 2009 4/4 the bottom bolt is the drain plug. It looks just like all the others around the diff cover plate but it doubles as a drain plug. To refill I pumped it up into the fill hole. i don't have a photo I'm afraid but there is a good illustration on https://www.gomog.com/allmorgan/btr.html#FillingGood luck
Paul
2009 4/4 Sport in Red
2022 Harley Davidson FXLRS Low Rider S
1977 Triumph Stag
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Joined: Mar 2022
Posts: 81 Likes: 1
Just Getting Started
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OP
Just Getting Started
Joined: Mar 2022
Posts: 81 Likes: 1 |
Many thanks chaps for confirming and yes I’ll be sure to loosen the fill plug before draining the oil.
😊
Kevin Davies
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Joined: Nov 2015
Posts: 8,703 Likes: 501
Just barreling along Needs to Get Out More!
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Just barreling along Needs to Get Out More!
Joined: Nov 2015
Posts: 8,703 Likes: 501 |
Just looking through some pics of my 2016. 4/4, and I can’t see any drain plugs either ? Perhaps mine was pumped out, in last picture here 2 years ago at Williams. I’m sure someone will be along soon with the answer Blimey Matron...that's a whopper 
Jon M
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Joined: Dec 2009
Posts: 37,489 Likes: 993
Tricky Dicky Member of the Inner Circle
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Tricky Dicky Member of the Inner Circle
Joined: Dec 2009
Posts: 37,489 Likes: 993 |
A photo copied from Dave's how to service a Roadster page. ![[Linked Image]](http://tm-img.com/images/2023/04/05/di.jpeg) ![[Linked Image]](http://tm-img.com/images/2023/04/05/P1000628.jpeg)
2009 4/4 Sport Henrietta
1999 Indigo Blue +8
2009 4/4 Sport Green prev
1993 Con Green +8 prev
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Joined: Feb 2016
Posts: 8,702 Likes: 416
Needs to Get Out More!
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Needs to Get Out More!
Joined: Feb 2016
Posts: 8,702 Likes: 416 |
How can a car that clean underneath possibly need the diff oil changing just yet 
Richard
2018 Roadster 3.7
1966 Land Rover S2a 88
2024 Royal Enfield Guerrilla 450
1945 Guzzi Airone
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Joined: Dec 2009
Posts: 37,489 Likes: 993
Tricky Dicky Member of the Inner Circle
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Tricky Dicky Member of the Inner Circle
Joined: Dec 2009
Posts: 37,489 Likes: 993 |
It's Dave and it will be a 5th April thing  Time to put some more away in the ISA too tomorrow.
2009 4/4 Sport Henrietta
1999 Indigo Blue +8
2009 4/4 Sport Green prev
1993 Con Green +8 prev
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Joined: Jun 2020
Posts: 488 Likes: 27
Learner Plates Off!
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Learner Plates Off!
Joined: Jun 2020
Posts: 488 Likes: 27 |
What's the service interval for this? Mine is a 16 plate and serviced every year at a mains dealer. I don't ever recall being asked/told to change the diff fluid.
Thanks!
P
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