PART 1
ENGINE SYSTEMS
Chapter 1
ENGINES
Section
Page
A. DIESEL ENGINE - DESCRIPTION AND OPERATION . . . . . . . . . . . . . . . . 1
B. DIESEL ENGINE - OVERHAUL... . . . . . .. .. .. .. .. . . . . .. . . .. .. .. . . .. 2
A. DIESEL ENGINE -
DESCRIPTION AND OPERATION
This chapter describes the overhaul and repair of the
Ford 455 direct injection diesel engine.
No of Cylinder
Bore
Stroke
Displacement
Compression Ratio
3
4.4 in. (111.8 mm)
4.4 in. (111.8 mm
201 cu. in. (3294 cm
3
)
16.3 to 1
The engine, Figure 1, features a cross flow cylinder head
with the inlet and exhaust manifolds on opposite sides
of the head.
The combustion chamber is formed in the crown of the
piston which has two compression and one oil control
ring all located above the piston pin.
The cylinder head assembly incorporates the valves,
valve springs and spring retainers. Valve guides are an
integral part of the cylinder head with replaceable valve
seats pressed into the valve ports.
The crankshaft is supported in the cylinder block by four
main bearings and the crankshaft end thrust bearing
located on the second main bearing.
Front and rear crankshaft oil sealing is affected by one
piece, single lip type seals.
The crankshaft rear main bearing carrier is sealed by an
oil seal retainer, modified main bearing cap and a cork
gasket which seals the face of the retainer to the block.
The piston connecting rods are "I" section and the ful-
ly floating piston pin is retained in the piston by two
snap rings.
PRINTED
IN U.S.A.
LUBRICATION SYSTEM
Lubrication of the engine is maintained by a rotor type
oil pump mounted at the base of the engine block. The
oil pump is driven from the camshaft and draws oil from
the engine sump through a wire mesh screen.
A spring loaded relief valve in the pump body limits the
pressure in the system by directing excess oil back to
the intake side of the pump.
Figure 1
3-Cylinder Diesel Engine with Rotary Type
Fuel Injection Pump
1
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