Main bearing bores precision machined. Engine mounting bolts at generator end fitted with hollow dowels serve as shear blocks. Welded, carbon molybdenum steel structure which forms the cylinder housing and upper part of the crankcase. Neoprene seats used throughout. Heat-treated, steel forging drilled for pressure lubrication of all bearings.
Shaft is counterweighted and dynamically balanced.
Coupling flange for bolting crankshaft to generator is integral with the shaft. Thin shell, heavy-duty, copper lead, strip type, fitted to bedplate. Removable through crankcase openings without disturbing crankshaft. Flanged upper end fits into frame counterbore, lower end provided with rubber sealing rings between liner and frame. This arrangement permits expansion and contraction of liner due to thermal changes.