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Rear Diff Information required please
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AL_P
 


Member Since: 17 Feb 2017
Location: London
Posts: 161

United Kingdom 2005 Discovery 3 4.4 V8 HSE Auto Bonatti GreyDiscovery 3
Rear Diff Information required please

So I have a leaking rear diff, clearly to do with pressure as after a few issues with the fill plug it has now migrated to the offside driveshaft seal, which is also fairly new.

I am trying to find out exactly how the breather works. I know the pipe is clear for the breather but I can only now summarise that the blockage is at the top of the diff where the pipe enters the diff.

Can I just poke a screwdriver in there to clear it and then change the oil again or is there some sort of one way valve to release pressure but not let anything back in?

Thank is advance!!!  
Post #18661168th Oct 2017 1:42 pm
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AL_P
 


Member Since: 17 Feb 2017
Location: London
Posts: 161

United Kingdom 2005 Discovery 3 4.4 V8 HSE Auto Bonatti GreyDiscovery 3

Any diff experts on here can help please???  
Post #186679310th Oct 2017 7:15 am
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sputnixb51
 


Member Since: 23 Apr 2013
Location: Morayshire
Posts: 833

Scotland 2014 Discovery 4 3.0 SDV6 SE Tech Auto Corris GreyDiscovery 4

I believe the breather terminates in the body behind the left rear light, perhaps applying a small vacuume (suck)here would prove more with less risk initially?  
Post #186683210th Oct 2017 9:54 am
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AL_P
 


Member Since: 17 Feb 2017
Location: London
Posts: 161

United Kingdom 2005 Discovery 3 4.4 V8 HSE Auto Bonatti GreyDiscovery 3

Thanks for your reply 👍🏻

I have already removed the pipe and ensured that it is clear, you are however correct it ends in the body, behind the fuel cap and runs alongside the fuel filler pipe.

I will give blowing some air a go in first, just wondering if there is a non return valve in the top of the diff where the pipe attaches that may prevent air or any other tool from going in.  
Post #186687310th Oct 2017 11:51 am
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10359

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

I don't think there is a one way valve.  
Post #186688410th Oct 2017 12:14 pm
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sputnixb51
 


Member Since: 23 Apr 2013
Location: Morayshire
Posts: 833

Scotland 2014 Discovery 4 3.0 SDV6 SE Tech Auto Corris GreyDiscovery 4

Just had a look at a g/box and transfer box I have just a hole and push fit union, not expected to be upside down long! Embarassed  
Post #186690110th Oct 2017 1:00 pm
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AL_P
 


Member Since: 17 Feb 2017
Location: London
Posts: 161

United Kingdom 2005 Discovery 3 4.4 V8 HSE Auto Bonatti GreyDiscovery 3

😊

Will have a go at gentle pushing a screwdriver into the top of the box and see if there is an obstruction 👍🏻

Will post an update once it’s done but there I’d definitely a blockage!  
Post #186690810th Oct 2017 1:08 pm
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