CX210/CX240 ELECTRONIC FUEL SYSTEM
8 - 2
CX EXCAVATORS
ENGINE COMPONENT CHANGES
The new 24 valve, 5.9 Liter engines have a full authority electronic control fuel injection
system. Numerous changes have been implemented into the Engine, compared to the lower
horsepower 5.9 Liter Family I engines. These engines have four valves per cylinder to
optimize air flow, fuel economy and emissions. The fuel injectors are located vertically in the
center of the cylinder for improved fuel atomization and uses a fuel system that is totally
electronically controlled.
Other changes made in the Engine include the following:
The engine block now uses straight thread o-ring fittings in place of taper pipe thread fittings,
a thicker camshaft bushing is installed at the front of the block, the pistons differ in the ring
groove configuration as well as in the combustion chamber which can include fiber
reinforcement and anodize coating in the higher horsepower ratings. A stronger connecting
rod configuration, stronger main bearing cap bolts, a wider gear housing and a relocated air
compressor mount are incorporated into the engine and a speed indicator ring is located
between the number five and six cylinders of the crankshaft. The camshaft uses wider lobes
along with wider faces on the lifters and stronger push rods with hardened sockets.
The cylinder head uses four valves per cylinder, common length head bolts (130mm), an
integral fuel return rifle through the length of the head and a one piece valve cover. New
valve springs and a new style rocker arm are also used. There is also a new design exhaust
manifold and a waste gate turbocharger along with an air to air after-cooler.
The lubrication system uses an improved oil pump, oil cooler and oil filter. Changes in the
cooling system include a redesigned head gasket for increased coolant flow and a water
pump with-out a shroud has been incorporated.
The fuel system includes an injection pump with electronic control of the timing, speed and
fuel delivery, a new style injector and a new electronic fuel lift pump.
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