capacity and is filled with oil.
The oil pump is a gear type element driven by a
gear in the engines front cover.
When the engine is operating, a gear drives the
oil pump and oil is pumped from the oil sump to the oil cooler.
The oil cooler is
a coil cooled by the cooling fan.
The cooling fan causes oil to cool to a lower
Oil is then pumped into the oil filter which is a throw-away element.
Contaminants are removed from the oil and the oil is pumped to the engine metering
Metering plugs are oil jets within the engine block that spray oil on to
internal parts of the engine.
Oil is also pumped to the injection pump lube
The fuel injection pump lube supply is a line on the side of the oil
filter housing and directs oil to the injection pump.
Excess oil in the injection
pump spills into the timing cover.
In addition, the low oil pressure switch and
sending unit are located at the oil filter housing discharge.
The oil pressure
switch is set to automatically open when the oil pressure drops below 4 psi
22.214.171.124.3 Cooling Fan.
The cooling fan is attached to the engine and is driven by a
V-belt connected to the drive pulley.
The cooling fan causes forced air flow
across the top of the engine cylinder heads and oil cooling coil.
Forced air flow
cools the cylinder heads and oil.
This cooling process prevents overheating of the
126.96.36.199.4 Cylinder Head and Valves.
The 350 GPM Pumping Assembly uses three cylinder
Each cylinder head functions the same and can be removed separately.
cylinder head contains an intake valve and exhaust valve.
The intake and exhaust
valves open and close intake and exhaust ports.
The intake port is connected to
the intake manifold and the exhaust port is connected to the exhaust manifold.
188.8.131.52.5 Crankshaft Block.
The crankshaft block provides mounting for various engine
It has an intake manifold that provides a connection to air assembly.
Air is taken from the air assembly through the intake manifold into the combustion
chamber of the cylinder head.
A breather pipe is connected to release gases from
the combustion chamber to prevent excess pressure buildup.
184.108.40.206.6 Camshaft and Timing Gears.
The camshaft and timing gears control valve
opening and closing times.
The speed at which valves open and close is also
determined by the camshaft and timing gears.
The time at which valves open and close (valve timing) and duration of valve
opening are stated in degrees of crankshaft rotation.
Timing is determined by the
Timing gears are driven by the engines camshaft.
camshaft drives the engine components that close the intake and exhaust valves. In
addition, timing gears control the fuel infection and oil lubrication.
the engine is critical to prevent damage.
220.127.116.11.7 Pistons and Connecting Rods.
The pistons are connected to connecting rods
that are attached to the crankshaft.
The pistons provide the force to drive the
As the crankshaft is turned, connecting rods force the pistons
upward and downward.
Since the pistons are in sealed cylinders, the pistons
compress air that is brought into the intake openings as described in
The up and down movement of pistons forces connecting rods
to turn the crankshaft and flywheel.
Refer to paragraph 18.104.22.168.1 for a more
detailed operation of the four stroke piston operation.
22.214.171.124.8 Crankshaft and Flywheel.
The crankshaft and flywheel provide transfer of heat
energy from the pistons into mechanical energy.
When the pistons are forced
downward by the ignition of fuel, the crankshaft turns, causing the flywheel to
In addition, the crankshaft forces the other pistons connected to the
Each time a piston is forced downward, another piston is forced
The piston at TDC causes another combustion to occur and is forced
The 350 GPM Pumping Assembly uses three pistons that are timed together
by timing gears connected to the engines camshaft. The crankshaft is also
connected to a timing gear of the engines camshaft.
Each time the crankshaft
turns, it forces the camshaft to turn.
The pump assembly is connected to the
Since the flywheel must turn with the crankshaft, the pump assembly
driven at the speed of the engine.