Deutz parts for a Deutz engined Bateman HiLo

[Half Pint]

The sprayer in question is a 1990 Bateman HiLo with a Deutz engine. The parts needed are for the air compressor, a pulley, various seals and possibly a compressor and at the moment genuine parts seem very very expensive. Bateman have been very helpful with a lot of parts but no longer keep the compressor parts, which is understandable. Does anyone know anyone who may be breaking anything like this or if the engine with compressor were used in other applications. Any suggestions will be much appreciated.