Complete CUMMINS DIESEL ENGINE PARTS MANUAL total of 13 Manuals with Folder from 1978. HS-NS-5 1/8 Bore, 743 Series. NH-5 1/2 Bore, 855 Series. Formula 230, 5 1/2 Bore. H-NH 5 1/8 Bore, 743 Series. Formula 290 (full flow cooling). CUMMINS DIESEL ENGINES SHOP MANUAL Group. 10, Intake Air System T-50 Turbocharger. CUMMINS DIESEL ENGINES SHOP MANUAL Group:12, Air Equipmet Compressor Vacuum Pump. This folder package was originally put together by Cummins for Sub-Dealers. All manuals are in very good clean condition with minor signs of wear.