There are rebuild kits for these pumps. Pistons, seals, desiccants, etc. are very easy to rebuild. When the bags have been fully deflated, they take a few cycles to totally inflate. Another good practice is to move the pump to the engine bay, much less moisture, and is easier to diagnose and fix if there is a future problem.
interesting suggestion to move the pump to the engine bay - there is a space where a back up battery is often located . Have you made this modification ? Is it fairly easy to do ? presumably re-routing the pipes ?
I had a LR3 and now a RRS which has the same suspension system - a common fault is a hairline crack in the "frontplate" to the chamber with the crystals in it . A very affordable Billet aluminum frontplate is available as a kit. I am just about to remove my compressor and fit one of these billet aluminium frontplate and see if that solves my problem.
Nothing wrong with the old pump, all you had to do was clean the drier, and strainer fill it up with new molucils balls and the old pump would work again
I've seen some rotten air driers on these, that's one of the worst. It may have survived a rebuild, but it's been blocked for so long that the piston seal will be shot.
