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dorsetsmith



Member Since: 30 Oct 2011
Location: South West
Posts: 4554
Galvanic corrosion problem with TD5 fuel filter head
right hand fixing hole ( Galvanic corrosion ) steel and aluminum together Rolling Eyes

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Use an isolating coating on the aluminum and the steel to isolate them electrically.


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isolating tub in fixing hole


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isolating washers under bolt head and in between the filter head and chassis steel

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Last edited by dorsetsmith on 7th Mar 2019 2:54pm. Edited 2 times in total
Post #762173 6th Mar 2019 2:49pm
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Intercept



Member Since: 27 Feb 2017
Location: Suffolk
Posts: 587
United Kingdom 2002 Defender 110 Td5 Black LE Java Black
Mine failed a few years back just like that. I initially considered the GORE version but ended up getting the original LR replacement. However, before fitting it I gave it several coats of a thick 2-pack epoxy paint designed for chassis use with the expectation of it insulating the cast alloy from the steel chassis & fasteners.
Post #762176 6th Mar 2019 3:11pm
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lightning



Member Since: 23 Apr 2009
Location: High Peak, Derbyshire
Posts: 2236
United Kingdom 
It’s a fairly common failure due to the position of the filter under the rear wheel arch.

I cost mine with spray grease every so often and it seems fine so far.
Post #762306 7th Mar 2019 12:29pm
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bankz5152



Member Since: 02 Feb 2017
Location: South London/North Kent
Posts: 2069
2004 Defender 110 Td5 DCPU Epsom Green
At that stage the head may well have become porus id replace it. Instagram @defender_ventures
Empire Tuning - Agent
Post #762318 7th Mar 2019 2:15pm
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dorsetsmith



Member Since: 30 Oct 2011
Location: South West
Posts: 4554
have order replacement ££££££ ***!!!!!! and use isolation on new one
Post #762325 7th Mar 2019 2:50pm
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4RF RDS



Member Since: 19 Jul 2015
Location: Ottawa
Posts: 898
Canada 2000 Defender 110 Td5 XS CSW Epsom Green
FWIW and some food for thought... I wrap all stainless bolts and dissimilar metal bolts in teflon tape to isolate them. It has worked very well for many years now. It is time consuming but worth it. 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)
Post #762345 7th Mar 2019 4:09pm
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