DETROIT DIESEL 53
where the supply divides. Part of the oil goes to the
camshaft bearings and up through the rocker arm
assemblies; the remainder of the oil goes to the main
bearings and connecting rod bearings via the drilled oil
passages in the crankshaft.
Coolant is circulated through the engine by a centrifugal-
type water pump. Heat is removed from the coolant,
which circulates in a closed system, by the or radiator.
Control of the engine temperature is accomplished by
thermostat(s) which regulate the flow of the coolant
within the cooling system.
Fuel is drawn from the supply tank through the fuel
strainer by a gear-type fuel pump. It is then forced
through a filter and into the fuel inlet manifold in the
cylinder head(s) and to the injectors. Excess fuel is
returned to the supply tank through the fuel outlet
is mounted on top of the engine between the two banks
manifold and connecting lines.
Since the fuel is
of cylinders and is driven by the gear train. The
constantly circulating through the injectors, it serves to
governor is mounted on the rear end of the 6V-53
cool the injectors and to carry off any air in the fuel
The meaning of each digit in the model numbering
Air for scavenging and combustion is supplied by a
system is shown in Fig 1. The letter indicates right-hand
blower which pumps air into the engine cylinders via the
engine rotation as viewed from the front of the engine.
air box and cylinder liner ports. All air entering the
The letter A designates the location of the oil cooler and
blower first passes through an air cleaner.
starter on the V-type engines. Each engine is equipped
Engine starting is provided by either a hydraulic or
with an oil cooler full-flow oil filter, fuel oil strainer and
electric starting system. The electric starting motor is
fuel oil filter, an air cleaner governor, fan and radiator,
energized by a storage battery. A battery-charging
and a starting motor.
generator, with a suitable voltage regulator, serves to
keep the battery charged.
Full pressure lubrication is supplied to all main,
connecting rod and camshaft bearings and to other
Engine speed is regulated by a mechanical or
moving parts. A rotor-type pump draws oil from the oil
hydraulic type engine governor, depending upon the
pan through a screen and delivers it to the oil filter.
From the filter, the oil flows to the oil cooler and then
enters a longitudinal oil gallery in the cylinder block
1972 General Motors Corp.