SYKES HV14 and HV14A Universal Gear Hobbing Machines: Operator's Manuals SYKES HV14 and HV14A Universal Gear Hobbing Machines: Operator's Instruction Manuals with an electrical schematic. While the manual for the HV14 is comprehensive, that for the HV14A is far less so. Hence. both are included to cover all possibilities Manufacturers: Sykes Models: HV14A Contents: Operators Manual Electrical Diagrams