Just a quick note. If you can find some way of attaching a filter to the inlet port of the compressor, you will get much longer service life from the pump. The area the comressors are usually installed in is prone to high dust and contaminanats. This dirty air is what probably destroyed your compressor in the first place. A good source for a filter is as simple (and cheap) as a sintered plastic silencer, available from any good reputable pneumatic equipment supplier. The plastic ones are much more suitable than the brass ones as they have a much larger surface area for thread size and far cheaper. I used a 1/4 bsp silencer to an adapter on the Magna/Ford compressor. You may need to play with the attachment method.
More ...for the Rangie/Disco owners
When I owned my last Rangie, the pssweak vacuum valve for the centre locking diff gave up the ghost. This was due to the wear in the chicken sht quality valve caused by dust ingression over the years. I replaced this valve with a 5/2 1/4" lever operated spool valve. I used the above silencers on the exhaust ports which, under vacuum become the inlet ports. this system outlasted the vehicle. I still have all the valves etc. Direct action soleniod valves can be used but can be tricky to set up, tho it can be activated by a toggle switch on the dash.
even more to twist CG's mind,
If anyone needs to convert a standard M/C gearshift to handlebar control, eg disabled rider, I worked out the circuits for a disabled Quad racer a few years ago when I was flogging pnuematics. however the rear braking circuit was next to impossible to setup.
