Thread: Air Suspension and Compressor - technical help needed

Originally Posted by ~Rich~

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.

You cant replace the main wear items like piston/cylinder, cylinder liner or piston seal though.

We are running a Dunlop copy of the Hitachi, it's been in the car 6 months and has been faultless so far.

It cost $535 au plus freight, I bought a number of things so I don't know what the freight would have been.

This isn't a recommendation, just a report of how it's behaving.

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.

Yeah, I got one delivered ex UK, but as the car was in for something else anyway, I just had them install it for me. I've since become a more typical Land Rover owner, and service myself

I have found the Hitachi ones to be the more reliable unit and being Japanese you can get the service kit and parts.
The AMK to me seem more unreliable with no parts.
I have also pulled them apart to find all the inside of the motor totally stuffed.

But saying all that, I have given up and have supplied many customers with a knock off Chinese amk for $300 fitted and saying lets see how long we get out of it.