I have a 160lpm Tmax compressor which is about 5 years old now....don't think the brand is relevant since they are probably all from the same factory in China.
Mine has worked harder than most, because I had it permanently mounted in my previous bakkie for two years and during that time it permanently kept a 20 litre tank at 8 bar. My set-up was in Weg/Drive-out as well a few years ago.
Here's the article that was in Weg...even though I'm Afrikaans, the original article I wrote in English, so even to me, some of the words used are quite odd.
http://weg.co.za/toerusting-en-diy/werk ... erste-lug/
Due to the hard life it had, I've had a few issues with my compressor.
-On top of the "cylinder head" there are two one-way valves which work with o-rings and a piece of spring steel. The one spring steel plate broke, so it could not build up any pressure. I fixed it with a piece of an old feeler gauge and some new o-rings as they tend to go hard and brittle due to the heat.
-The switch melted, so I bypassed the switch and relay. Now I connect directly to the battery with crocodile clamps.
-The "Big End Bearing", which is a cheap Chinese ball bearing, disintegrated. I then replaced it with a new Koyo bearing, which took a bit of fiddling as the bearing is crimped onto the shaft and into the conrod, so it was not designed to be replaced.
Currently it is not mounted in my Patrol because I usually have more than one 4x4 and need to use the same compressor in the other vehicle as well. I mounted the pressure switch arrangement from the tank set-up to the side of the compressor, so it pumps until the pipe is at 8 bar and then the compressor shuts off. This gives me the ability to use my impact gun, because that small burst of 8 bar air is enough to knock a wheel nut loose, or just let is run for a few seconds and the pipe is back up to 8 bar and ready for another blow.
I have also replaced the crappy standard pipe, with a proper pneumatic hose to better handle the higher pressure and the heat.
For inflation, I have a garage style gauge with a clip-on valve chuck. With this type of gauge you can see the actual pressure inside the tyre when you let go of the trigger. The problem with the inline gauge is that it shows the pressure in the pipe and not the tyre while the pump is running.
A friend of mine went a different route with a garage door remote to swith the pump on and off. When wants to check the tyre pressure, he stops the compressor with the remote while he's at the tyre being pumped, checks the gauge once it settles, and then switch it on again via the remote if he needs to inflate more.