TM 5-3895-382-24
The transfer pump (9) is located at the rear of distributor rotor
(16) in the end cap. The end cap also contains the strainer for
the fuel inlet and the pressure regulator (10) for the transfer
pump. The transfer pump has a positive displacement vane.
The pressure that is generated by the transfer pump is
automatically compensated for the effects of viscosity due to
temperature changes and fuel grades. The distributor rotor
(16) has a single axial bore with the following passages:
Two charging ports
One discharge port
The single discharge port serves all of the head outlets to the
fuel injection lines. The hydraulic head (14) contains the
following components:
The bore for the rotor
The bore for the metering valve (7)
The charging ports
The discharge fittings (8) of the head
The high pressure fuel lines to the fuel injection nozzles are
fastened to these discharge fittings (8). The fuel injection
pump contains a mechanical governor (4). The centrifugal
force of the governor flyweights (3) that are in the retainer is
transferred in order through the following items: a sleeve to the
governor arm, linkage, and metering valve (7). The timing
advance (12) is a hydraulic mechanism. The timing advance
unit performs one of the following functions:
Advance the delivery of fuel
Retard the delivery of fuel
An electrical stop solenoid is contained inside the governor
housing. The electrical ground is on top of the governor
housing. The supply connections are on the top of the
governor housing. When the voltage is applied, the plunger of
the solenoid moves in order to block the flow of fuel to the
engine. When the fuel flow is stopped, the engine stops.
Fuel Injection Pump (Lucas DP200 Series) On Type 2
Engines and 7BJ
NOTE:
For a complete description of Type 1 and Type 2
engines, refer to the Systems Operation, Testing
and Adjusting Module, "Engine Design" for more
information.
Illustration 14
Components of the fuel injection pump (Lucas DP200 Series)
Table 9
(1) O-ring
(8)
Electrical connection for
(2) Hub nut
stop solenoid
(3) Locking spacer
(9)
Fuel supply connection
(4) Locking screw
(10) Mounting flange
(5) Low idle adjustment screw (11) The fuel discharge lines
(6) High idle adjustment
that supply fuel to the
screw
fuel injector nozzles.
(7) Connection for the fuel
(12) Screw for adjustment of
return
timing advance
(13) Fittings for fuel discharge
The Lucas DP200 Series fuel injection pump is not a
serviceable part. The internal adjustment for the pump timing
is tamper proof. The adjustment for high idle is preset at the
factory. High idle should only be adjusted by personnel with
the correct training. The low idle is adjustable. The fuel
injection pump has a boost control and an engine stop
solenoid. The pump also has a self-vent feature which
removes air from the pump.
The fuel injection pump has a cold starting aid. The cold
starting aid advances the timing of the pump when the engine
is cold. The cold starting aid is electrically operated. The cold
starting aid should only be adjusted by personnel with the
correct training.
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