2
DETROIT DIESEL 53
SECTION 2
FUEL SYSTEM AND GOVERNORS
CONTENTS
2
Fuel System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1.1
Fuel Injector (Needle Valve). ........................................................................................
Fuel Injector lube.. ...........................................................................................................
2.1.4
2.2
Fuel Pump.. .........................................................................................................................
2.2.1
Fuel Pump Drive ................................................................................................................
2.3
Fuel Strainer and Fuel Filter..........................................................................................
2.7
Mechanical Governors.. ....................................................................................................
2.7.1
Limiting Speed Mechanical Governor (In-Line. Engine)...........................................
2.0
Shop Notes - Trouble Shooting - Specifications - Service Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FUEL SYSTEM
passage) and OUT (bottom passage) which are cast in
includes the fuel
The fuel system (Fig. I)
several places in the side of the cylinder head. This
injectors, fuel pipes (inlet and outlet), fuel manifolds
aids installation of the fuel lines.
(integral with the cylinder head), fuel pump, fuel
strainer. fuel filter and fuel lines.
Surplus fuel returns from the outlet side of the
injectors to the fuel return manifold and then back lo
Fuel is drawn from the suppl!f tank through the fuel
the supply tank.
strainer and enters the fuel pump at the inlet side.
Leaving the pump under pressure, the fuel is forced
All engines are equipped with a restrictive fitting in
through the fuel filter and into the inlet fuel manifold,
the fuel outlet manifold to maintain the fuel system
then through fuel pipes into the inlet side of each
pressure.
injector.
Refer to Section 13.2 for the size fitting required.
The fuel manifolds are identified by the words IN (top
SEC. 2 Page 1
March, I973
