Air Suspension and Compressor - technical help needed

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Originally Posted by Ghost-Who-Walks

Ah, that's great info, thanks for that! I might order that and then pull the compressor apart and refit (and ensure all my bits/pieces are correctly assembled)...

Also, I've never pulled the motor or the exhaust valve apart. Those 4x4AirSeals video's are the first time I've seen that done. Gold!!!

I'll order the Exhaust valve kit and the replacement cylinder, piston, big-end - pull it all out and finish the overhaul I started a month ago!
After seeing that, I feel like I've definitely only done half a job!!!

Thanks heaps.

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The exhaust valve kit strongly recommends not changing those black rings unless absolutely necessary but there is a plug bung at the end that’s easy to change.

Get the kit with the cylinder seals also always good to have the lot.

I blast contact cleaner throughout and motor and have a small air compressor makes a big difference to these jobs.

I wet and dry that wafer with 2000 just to tidy up.

It’s never shown well but you pry the metal collet out of the quick air connectors and inside there’s an o ring you fish out. Change these they are in the kit.

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Originally Posted by PerthDisco

I think the 2nd and 3rd and 4th rebuilds get shorter due to bore slop and other factors hence doing it well each time pays off

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Replacing the piston and cylinder will go a long way to making them last for sure.

I am at only 142,000km original everything with the air suspension
I was just going to buy new everything if I decide to play crank roulette, how long should I expect the compressor last and what’s the cost difference between replacement and rebuild ?

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Originally Posted by discomatt69

I am at only 142,000km original everything with the air suspension
I was just going to buy new everything if I decide to play crank roulette, how long should I expect the compressor last and what’s the cost difference between replacement and rebuild ?

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You will have an AMK compressor so you can only service the drier as parts aren't available unlike the Hitachi, rebuild about $250 to replace everything available versus $700 plus for a genuine Hitachi.

I would look at a service kit now before you start having any issues.

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Originally Posted by loanrangie

You will have an AMK compressor so you can only service the drier as parts aren't available unlike the Hitachi, rebuild about $250 to replace everything available versus $700 plus for a genuine Hitachi.

I would look at a service kit now before you start having any issues.

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For the sake of 450 difference I would just buy anew unit
i Will look at getting the dryer beads replaced and get a whole new unit ina few years if I still own it
I am thinking a couple more big trips before replacing the whole lot if I keep it

even with replacing the bags and compressor with new it’s still cheaper than aftermarket suspension every 8-10 years from brand new
i never have a never understood how some rave about how good their 4wd is when they throw away brand new suspension to replace it at a cost of 1000’s to get a decent set up them claim LR air suspension to be expensive and unreliable

Those estimates are for a Hitachi, double that for the amk but the service kit is cheaper as there are less replaceable parts.
So more like 4 x the service cost to replace.

Bloody hell....

I got 12 years out of the first AMK, so just threw in a new one...

I swapped my Hitachi out for an AMK, as at the time, the Hitachi's were considered inferior to the AMK unit.

Annoyingly, I had the mechanic do it, so I didn't keep the old part for repairs. That said, I will probably simply follow Tombie's lead, and replace the whole damn thing when it goes.

Buying yourself ex UK it is around $1000 delivered Hitachi or AMK but the service guys seem to turn it into a $2k+ job buying at local stealer prices plus labour so the $200 to rebuild the Hitachi properly every 8 - 10 years is worth it.

There is no rebuild option on the AMK other than desiccant which I tried on my mates 2015 D4 to no avail then swapped to a new one. That was last year so they got 8 years. It was faulting for a good 6 months prior to me getting involved.

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Originally Posted by PerthDisco

Buying yourself ex UK it is around $1000 delivered Hitachi or AMK but the service guys seem to turn it into a $2k+ job buying at local stealer prices plus labour so the $200 to rebuild the Hitachi properly every 8 - 10 years is worth it.

There is no rebuild option on the AMK other than desiccant which I tried on my mates 2015 D4 to no avail then swapped to a new one. That was last year so they got 8 years. It was faulting for a good 6 months prior to me getting involved.

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You can service more than the desiccant on the AMK.

Land Rover Discovery 3 / 4 Archives - 4x4 Air Seals

I gave mine a new set of O-Rings / Desiccant as a regular service also serviced all the Valve blocks too, I'll do it every 50,000k.