IGNITION SYSTEM DIAGRAM

INDIAN CHIEF SERVICE MANUAL SCHEMATICS 253

LUBRICATION FLOW DIAGRAM

Figure 4 — POWERPLUS™ 100 engine lubrication system In the POWERPLUS™ 100 engine lubrication system, the pump draws oil from the tank and supplies the oil to the engine through two of three pressure ports. Oil is pumped from the first pressure port through the tappet screen, the valve lifters and pushrods to the top of the engine for lubrication of the rocker assemblies and valves. The oil then drains from the rocker boxes through the pushrod tubes to the cam gearcase. From the second pressure port, oil is pumped through channels in the gearcase and cam cover to provide lubricating oil to the pinion shaft, bushing, crankshaft bearings, connecting rods and pistons. Pressure created within the crankcase on piston downstroke then forces oil from the crankcase into the breather valve. From the breather valve, the oil is sprayed into the cam gearcase to lubricate the cam and pinion gears. Oil accumulating at the bottom of the cam gearcase is picked up by the pump and returned through the filter to the oil tank. Any excess oil pressure within the oil pump is released through the third pressure port for return to the oil tank.