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andylee

Member Since: 29 Jun 2016
Location: South East
Posts: 88

Centrifuge Oil Filter Housing Seal

Hi guys, Ive got to pull the Centrifugal Oil filter housing and drill out a broken bolt for the cap, and yes Ive always been very careful not to overtighten these but it somehow it locked itself solid and subsequently broke leaving half the nut in the thread.
My question here is about the O ring seal to the oil cooler, part number ERR7098.
I cant find a genuine part for this anywhere as I always try to stick to genuine parts especially critical parts and parts that mix with heat and oil. Should I be concerned about using a non genuine seal ? Or doesn’t it really matter too much? I could just re use the one set in place as it wasn’t leaking before but it would seem like a good idea to replace it. I don’t really want to take it off again because Ive used a £1 seal but is there an alternative that anyone could recommend?
Many thanks
A

2nd Apr 2024 4:07pm

4RF RDS

Member Since: 19 Jul 2015
Location: Ottawa
Posts: 901

2000 Defender 110 Td5 XS CSW Epsom Green

New centrifugal filters always come with a new seal. LR part number for the seal alone is ERR7247

Good luck 2010 Range Rover MkIII Autobiography Super Charged (Idris)
2003 Range Rover Mk III (Desmond FitzWilliam)
2000 Defender 110 CSW TD5 (CTX)
1992 Range Rover Classic (Lizzy)
1972 Series III 300 Tdi (Stanwood)
1967 MGB GT

Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin to slit throats.
H. L. Mencken (1880 - 1956)

2nd Apr 2024 4:17pm

Screbble

Member Since: 26 Apr 2015
Location: Lancashire
Posts: 2054

2004 Defender 90 Td5 XS CSW Zambezi Silver

Sounds like an all too common problem - good luck with the repair - but make sure that none of the detritus or swarf gets in the housing.

I’d stick with the original o ring. It’s either fine or it’s not if you know what I mean.
All of the rotor filters I’ve had come with a new seal - I’ve never seen them sold separately.

Good luck 👍

2nd Apr 2024 4:19pm

andylee

Member Since: 29 Jun 2016
Location: South East
Posts: 88

Sorry guys just to clarify, i have to remove the filter housing from the the oil cooler so I can drill a bolt out and the seal Im looking for is out the side of the filter housing where it joins to the oil cooler and is what looks like a 3cm O ring. Part ERR7098 Not the seal that comes with the filter for the lid.
Thanks
A

2nd Apr 2024 4:31pm

4RF RDS

Member Since: 19 Jul 2015
Location: Ottawa
Posts: 901

D’oh! The limitations of text!

The two o rings which only seems to come with the oil cooler assembly? I am sure microcat would have them listed but obviously not here in LRWorkshop. 🤷‍♂️

https://www.lrworkshop.com/diagrams/land-r...lter_53224 2010 Range Rover MkIII Autobiography Super Charged (Idris)
2003 Range Rover Mk III (Desmond FitzWilliam)
2000 Defender 110 CSW TD5 (CTX)
1992 Range Rover Classic (Lizzy)
1972 Series III 300 Tdi (Stanwood)
1967 MGB GT

Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin to slit throats.
H. L. Mencken (1880 - 1956)

2nd Apr 2024 4:39pm

blackwolf

Member Since: 03 Nov 2009
Location: South West England
Posts: 16892

2007 Defender 110 Puma 2.4 DCPU Stornoway Grey

You will find it extraordinarily difficult to drill out a sheared bolt without damaging the housing since the bolt is steel and the housing light alloy. I would suggest trying to find a second-hand housing (they turn up on eBay etc) to refurbish and swap them over.

The threads in the holes are a very common failure and it is sensible to Helicoil them before fitting the housing. Helicoiled they will be many times stronger and will last forever.

2nd Apr 2024 5:09pm

rustandoil

Member Since: 08 Sep 2012
Location: Cotswolds
Posts: 670

2005 Defender 110 Td5 XS DCPU Bonatti Grey

It's the bolt design that's the problem with the housing top.... The bolt is shouldered so that it's retained with the cap... Unscrewing the bolt to remove it damages the thread, it's all downhill from that point 😕

2nd Apr 2024 5:22pm

34064

Member Since: 12 Dec 2023
Location: South Central
Posts: 101

Just make sure it's right as otherwise you can loose 6 litres of oil very quickly on your way into Bournemouth one morning 😅 110 Td5 Ex Utilities slowly converting into a pop top camper one day

Build thread:https://www.defender2.net/forum/post1024784.html#1024784

2nd Apr 2024 5:24pm

Screbble

Member Since: 26 Apr 2015
Location: Lancashire
Posts: 2054

andylee wrote:
Sorry guys just to clarify, i have to remove the filter housing from the the oil cooler so I can drill a bolt out and the seal Im looking for is out the side of the filter housing where it joins to the oil cooler and is what looks like a 3cm O ring. Part ERR7098 Not the seal that comes with the filter for the lid.
Thanks
A

Apologies my mistake. Hope all goes well

2nd Apr 2024 5:57pm

andylee

Member Since: 29 Jun 2016
Location: South East
Posts: 88

Thanks for your responses, following Blackwolfs wisdom I have sourced a refurbished housing from Turner Engineering that has already been Helicoiled, I think it would of always bugged me as a bit of bodge fix and now hopefully one less thing to worry about during its service and longer runs. lets hope the removal of the old unit goes smoothly as there is no aircon unit above it i'm hoping it will lift out without too much of a fight.
Gave up on trying to source an original O ring ERR7098 for the Oilcooler seal and just gone with the best I could find,
thanks everyone
A

FYI - It did manage a 300mile round trip at the weekend with no leaks and only one bolt holding the cap on but that might of just been luck, not sure how long that kind of luck lasts for...

2nd Apr 2024 6:58pm

blackwolf

Member Since: 03 Nov 2009
Location: South West England
Posts: 16892

I've met examples where the hole has been drilled out to clearance size and a nut has been fitted under the lower housing. It's a bit of a bodge but works.

2nd Apr 2024 8:21pm

34064

Member Since: 12 Dec 2023
Location: South Central
Posts: 101

Always worth having a long M5 bolt about and washers and Nylocs just incase it strips during a service 110 Td5 Ex Utilities slowly converting into a pop top camper one day

Build thread:https://www.defender2.net/forum/post1024784.html#1024784

2nd Apr 2024 8:57pm

NickMc

Member Since: 01 Oct 2014
Location: Norn Iron
Posts: 1571

blackwolf wrote:
I've met examples where the hole has been drilled out to clearance size and a nut has been fitted under the lower housing. It's a bit of a bodge but works.

I have seen that too

I’ve done it to get a farmer out of a pinch for a while as well….i wasn’t proud of myself

3rd Apr 2024 1:58am

andylee

Member Since: 29 Jun 2016
Location: South East
Posts: 88

Job done...

So today I extracted the centrifugal oil filter housing with some effort but no major drama, fitted the reconditioned (helicoiled) unit which slipped back into position. Drilled out the broken stud in the old one and fitted a long m6 and nut to keep as a spare. And thats that done...
Look forward to discussing the next Land Rover maintenance event with you all
and thank you all for your comments and advice.

Click image to enlarge

6th Apr 2024 4:00pm

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