I was just planning the repair of my corroded rear wheel arches when I spotted the terrible state of my air resevoir.

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These might help you.

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It is a silly fiddly job! So many things to remove in order to get at it, plus the disconnection of all the pipes to all the corners.

Make sure you have enough height below the car to drop the tank cover, and take special care removing and replacing all the pipe connections on the block valve, e.g. not cross threading any! it is a fiddly tight place to get them all back on.

The valve block might come away from the rubber mountings on the reservoir, you will need to use some creativity and extra special glue to stick it on to the new one, unless you can get some new mountings from Duckworths.

I had the valve apart whilst it was off, no problems with mine in terms of corrosion inside, others have had much worse. .
Experience is the only genuine knowledge, but as time passes, I have forgotten more than I can remember
Volvo V70 P2 2006 2.4 Petrol 170bhp Estate SE
MG Midget Mk1 1962

Previous: L322 Range Rover TDV8 3.6 2008; L322 Range Rover TD6 3.0 2002; P38A Range Rover V8 1999

Thanks chaps. Tips well received.

The current resevoir is peppered with holes with the deep blisters. I hope it holds out for a few weeks before I can get time to do it.

Will report back. 2014 5.0 Supercharged Autobiography & 2015 3.0SDV6 HSE Lux Discovery 4
2005 4.2 Supercharged Vogue SE & 2011 3.0SDV6 HSE Discovery 4
2002 4.4 Vogue
2000 4.6 Vogue
2010 Freelander 2 TD4 HSE
2009 Freelander 2 TD4.e 2009
1992 Mercedes 300D
1986 Renault 2.1 Turbo D
1976 Morris Marina 1.8

At this stage of corrosion, I would strongly recommend checking the brake lines underneath the cover along the left hand sill ( thats where they are on a LHD vehicle)
Regards
Heppsen 2017 MB V-Class
2016 Q7 (gone)
2012 FFRR TDV8
2012 Smart Pulse Turbo
1986 MB W126
1965 LR Series 2A
1961 LR Series 2

^^^^ Agree!

That said, I am surprised to see corrosion on the reservoir. Mine (if original on an '02) is (or appears to be) of galvanised construction and not a sign of rust anywhere.

Brake pipes were in a state though  .
Experience is the only genuine knowledge, but as time passes, I have forgotten more than I can remember
Volvo V70 P2 2006 2.4 Petrol 170bhp Estate SE
MG Midget Mk1 1962

Previous: L322 Range Rover TDV8 3.6 2008; L322 Range Rover TD6 3.0 2002; P38A Range Rover V8 1999

Funny you should mention the brake lines. I inspected them last year and decided to invest in genuine new rear lines that run down the nearside. I have still yet to work out how to fit them. Especially the line for the offside rear as it is in one piece and unlikely to survive the process of threading it through and across the rear axle. 2014 5.0 Supercharged Autobiography & 2015 3.0SDV6 HSE Lux Discovery 4
2005 4.2 Supercharged Vogue SE & 2011 3.0SDV6 HSE Discovery 4
2002 4.4 Vogue
2000 4.6 Vogue
2010 Freelander 2 TD4 HSE
2009 Freelander 2 TD4.e 2009
1992 Mercedes 300D
1986 Renault 2.1 Turbo D
1976 Morris Marina 1.8

This was not galvanised as far as I can tell, just painted black. The new one will get some extra treatment. 2014 5.0 Supercharged Autobiography & 2015 3.0SDV6 HSE Lux Discovery 4
2005 4.2 Supercharged Vogue SE & 2011 3.0SDV6 HSE Discovery 4
2002 4.4 Vogue
2000 4.6 Vogue
2010 Freelander 2 TD4 HSE
2009 Freelander 2 TD4.e 2009
1992 Mercedes 300D
1986 Renault 2.1 Turbo D
1976 Morris Marina 1.8

The one piece pipes should go in OK if side steps are removed, tank cover, rear wheel and a reasonable clearance below. I put a joint in (protected by tank cover) to overcome this. Check wiki. .
Experience is the only genuine knowledge, but as time passes, I have forgotten more than I can remember
Volvo V70 P2 2006 2.4 Petrol 170bhp Estate SE
MG Midget Mk1 1962

Previous: L322 Range Rover TDV8 3.6 2008; L322 Range Rover TD6 3.0 2002; P38A Range Rover V8 1999

Joe90 wrote:

^^^^ Agree!

That said, I am surprised to see corrosion on the reservoir. Mine (if original on an '02) is (or appears to be) of galvanised construction and not a sign of rust anywhere.

Brake pipes were in a state though

Perhaps it's time to take a look at the drier as well. I will investigate. I seem to recall some good videos on this. 2014 5.0 Supercharged Autobiography & 2015 3.0SDV6 HSE Lux Discovery 4
2005 4.2 Supercharged Vogue SE & 2011 3.0SDV6 HSE Discovery 4
2002 4.4 Vogue
2000 4.6 Vogue
2010 Freelander 2 TD4 HSE
2009 Freelander 2 TD4.e 2009
1992 Mercedes 300D
1986 Renault 2.1 Turbo D
1976 Morris Marina 1.8

Yep, dismantling the compressor is a warm, inside, kitchen table job, be prepared to catch all the little silica beads  .
Experience is the only genuine knowledge, but as time passes, I have forgotten more than I can remember
Volvo V70 P2 2006 2.4 Petrol 170bhp Estate SE
MG Midget Mk1 1962

Previous: L322 Range Rover TDV8 3.6 2008; L322 Range Rover TD6 3.0 2002; P38A Range Rover V8 1999

New air receiver fitted. Not too bad really. All the advice from the forum had lowered my expectations. New receiver from Dan fitted and painted with stone chip. Replaced all the nuts and bolts with new and kept the side step off so that I can treat the wheel arch rust.

Here is the delivered item before tone chip treatment next to the old one.

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