THEORY OF OPERATION - CONTINUED
ENGINE - CONTINUED
Oil Flow Through Lubrication System.
Engine oil pump is mounted to back of front gear train on lower right hand side of engine. Engine oil pump
is driven by an idler gear from crankshaft gear. Oil is pulled from sump through oil pump bypass valve on
its way to engine oil cooler. Bypass valve controls oil pressure from engine oil pump. Engine oil pump can
supply excess oil for lubricating system. When excess oil is necessary, oil pressure increases and bypass
valve opens. Open bypass valve allows excess oil to return to sump.