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Salisbury diff #639394
22/05/20 04:33 PM
22/05/20 04:33 PM
Joined: Aug 2019
Posts: 95
BigLes Offline OP
Just Getting Started
BigLes  Offline OP
Just Getting Started

Joined: Aug 2019
Posts: 95
I have an oil leak on my diff (Salisbury 7HA axle) and after a bit of investigation I have discovered it's coming from the right hand one of the two what look like Allen screw heads (circled). As you can see the oil is trickling down the diff casing onto the drain plug.

Does anyone know if these are Allan screws and can be safely removed for cleaning up and maybe re-fitting with thread seal? Or are they something else?

[Linked Image]

Last edited by BigLes; 22/05/20 04:35 PM.

Plus 4 4 seater Fiat TC 2ltr
Re: Salisbury diff [Re: BigLes] #639398
22/05/20 04:37 PM
22/05/20 04:37 PM
Joined: Feb 2010
Posts: 815
SimonH Offline
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SimonH  Offline
Talk Morgan Regular

Joined: Feb 2010
Posts: 815
Those are welds...
They hold the tubes into the pigs head


Simon @ Sifab.co.uk

Sifabtemporary@gmail.com
Re: Salisbury diff [Re: BigLes] #639400
22/05/20 04:44 PM
22/05/20 04:44 PM
Joined: Aug 2019
Posts: 95
BigLes Offline OP
Just Getting Started
BigLes  Offline OP
Just Getting Started

Joined: Aug 2019
Posts: 95
Sounds like a major job to fix then?


Plus 4 4 seater Fiat TC 2ltr
Re: Salisbury diff [Re: BigLes] #639432
22/05/20 05:55 PM
22/05/20 05:55 PM
Joined: Jun 2019
Posts: 82
Bethel, CT USA
PaulyG Offline
Just Getting Started
PaulyG  Offline
Just Getting Started

Joined: Jun 2019
Posts: 82
Bethel, CT USA
Maybe epoxy them.

Re: Salisbury diff [Re: PaulyG] #639459
22/05/20 06:57 PM
22/05/20 06:57 PM
Joined: Aug 2019
Posts: 95
BigLes Offline OP
Just Getting Started
BigLes  Offline OP
Just Getting Started

Joined: Aug 2019
Posts: 95
Originally Posted by PaulyG
Maybe epoxy them.


I don't think it would take as there is oil seeping out, and if I drain the diff down there will still be oil in the crack.

I was thinking maybe a spot weld on the outside - maybe with the diff in situ on the car? Obviously shielding the fuel tank!


Plus 4 4 seater Fiat TC 2ltr
Re: Salisbury diff [Re: BigLes] #639461
22/05/20 06:59 PM
22/05/20 06:59 PM
Joined: Jun 2015
Posts: 480
North Somerset, UK
D
Deejay Offline
Learner Plates Off!
Deejay  Offline
Learner Plates Off!
D

Joined: Jun 2015
Posts: 480
North Somerset, UK
Good old araldyte?


Doug

2011 +4 in Rich Maroon
Re: Salisbury diff [Re: BigLes] #639511
22/05/20 09:43 PM
22/05/20 09:43 PM
Joined: Aug 2015
Posts: 790
A
Arwyn Williams Offline
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Arwyn Williams  Offline
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A

Joined: Aug 2015
Posts: 790
Never come across them leaking from the spot welds before. In theory they shouldn't leak because they are a plug weld.

One thing you could check is whether the small breather hole (3mm) in the axle tube is blocked which is causing the axle to pressurise.

Kind regards

Arwyn


Last edited by Arwyn Williams; 22/05/20 09:46 PM.
Re: Salisbury diff [Re: Arwyn Williams] #639533
23/05/20 06:29 AM
23/05/20 06:29 AM
Joined: Aug 2019
Posts: 95
BigLes Offline OP
Just Getting Started
BigLes  Offline OP
Just Getting Started

Joined: Aug 2019
Posts: 95
Originally Posted by Arwyn Williams
Never come across them leaking from the spot welds before. In theory they shouldn't leak because they are a plug weld.

One thing you could check is whether the small breather hole (3mm) in the axle tube is blocked which is causing the axle to pressurise.

Kind regards

Arwyn



I have checked that and it is clear, just to be sure I also put a 2mm drill in and gently turned it by hand.


Plus 4 4 seater Fiat TC 2ltr
Re: Salisbury diff [Re: BigLes] #639536
23/05/20 07:04 AM
23/05/20 07:04 AM
Joined: Nov 2018
Posts: 1,525
Northants, UK
TBM Online NoMood
Talk Morgan Enthusiast
TBM  Online NoMood
Talk Morgan Enthusiast

Joined: Nov 2018
Posts: 1,525
Northants, UK
I hate having to refer people to a specialist rather than offer advice, however I'm stumped on this one.

These guys are brilliant and went above and beyond with my axle repairs. Gave lots of advice and help and only charged for a fraction of what they did.

JB Engineering


1972 4/4 4 seater
Too many ratty motorbikes
Re: Salisbury diff [Re: BigLes] #639538
23/05/20 07:06 AM
23/05/20 07:06 AM
Joined: Nov 2018
Posts: 1,525
Northants, UK
TBM Online NoMood
Talk Morgan Enthusiast
TBM  Online NoMood
Talk Morgan Enthusiast

Joined: Nov 2018
Posts: 1,525
Northants, UK
However, if the solution is just to seal them. JB Weld is my recommendation.


1972 4/4 4 seater
Too many ratty motorbikes
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