Leroi dresser product categories pacific air compressors h186 31 3 unloader rebuild kit leroi dresser 550a 770a 800a air compressor. Most use the copeland compressor which usually has 3 terminals l1 l2 which are your. Leroi air compressor wiring diagram 31 10 2018 leroi dresser leroi compressor service manual dressor leroi air compressor leroi air compressor model 0185dd e.