Diff Breathers - Where to they terminate under the bonnet?

**sam_d** · 9th July 2018, 11:32 AM

Hi all,

I found the centre and rear diff breathers laying down under my 2003 Td5 Disco Auto the other day. I'm not sure how long they've been like this - hopefully not too long.

Anyway, I've pushed them back up into the engine bay and I can't seem to find where they should be terminating or what they should be attached too.

Can anyone send me a quick photo of where they're meant to be? Haynes isn't too helpful with this one and I'm not finding any helpful images on Google either.

TIA!

**gavinwibrow** · 9th July 2018, 11:42 AM

Originally Posted by sam_d

Hi all,

I found the centre and rear diff breathers laying down under my 2003 Td5 Disco the other day. I'm not sure how long they've been like this - hopefully not too long.

Anyway, I've pushed them back up into the engine bay and I can't seem to find where they should be terminating or what they should be attached too.

Can anyone send me a quick photo of where they're meant to be? Haynes isn't too helpful with this one and I'm not finding any helpful images on Google either.

TIA!

Pretty sure they reach up and fit horizontally and sideways into clips near the top of the firewall?

**AK83** · 9th July 2018, 12:00 PM

As Gav says ..

Front axle: I think up near the ABS pump, at the firewall. on mine('00) along the firewall clipped along the same lines as the brake lines.
Rear axle: up into the LH wheel arch area.

**sam_d** · 9th July 2018, 12:00 PM

Originally Posted by gavinwibrow

Pretty sure they reach up and fit horizontally and sideways into clips near the top of the firewall?

The front one does that (on the passenger side) but these other two come up on the driver side and I can't see what they're supposed to attach to.

**AK83** · 9th July 2018, 12:07 PM

Originally Posted by sam_d

.... but these other two come up on the driver side and I can't see what they're supposed to attach to.

Auto?
I think the auto box has a convoluted one that does similarly.
Maybe transfer box too.

**sam_d** · 9th July 2018, 12:16 PM

Originally Posted by AK83

Auto?
I think the auto box has a convoluted one that does similarly.
Maybe transfer box too.

Yes. Auto.

**Nanna Truck** · 9th July 2018, 05:24 PM

Originally Posted by sam_d

The front one does that (on the passenger side) but these other two come up on the driver side and I can't see what they're supposed to attach to.

If they have a loop at the top and are at rear drivers side of engine, they are the gearbox and transfer case breathers. clip them over the heater hoses where they enter the firewall.
Regards
Harry

**sam_d** · 9th July 2018, 10:09 PM

Originally Posted by Nanna Truck

If they have a loop at the top and are at rear drivers side of engine, they are the gearbox and transfer case breathers. clip them over the heater hoses where they enter the firewall.
Regards
Harry

Thanks for the info. That's more or less where I've got them now so I'll just get busy with the cable ties tomorrow.

**PhilipA** · 10th July 2018, 08:16 AM

The rear diff one should go up behind the LH tailight.
That is where mine is and I am sure the PO was not savvy enough to change the position of it. It loops forward from the axle then up and back.
Regards Philip A

**sam_d** · 10th July 2018, 08:31 AM

Originally Posted by PhilipA

The rear diff one should go up behind the LH tailight.
That is where mine is and I am sure the PO was not savvy enough to change the position of it. It loops forward from the axle then up and back.
Regards Philip A

The two lines come from around the transfer case area (so I'm guessing one is for the auto box and one is for the transfer case) and have the looped ends. They reach to about the location described by Nanna Truck so I'm just going to secure them there.

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