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TM 10-4320-343-14
Table 1-2. Description of Major Components (continued).
Item
No
Item Name
Description and Purpose
11
THROTTLE CONTROL
Controls engine speed. (Not used on regulated models.)
12
FUEL FEED PUMP
injection pump.
13
FUEL INJECTION PUMP
High pressure fuel delivery pump driven by timing gear and
meters high pressure fuel to injector nozzles.
14
FUEL FILTER
Throw-away element which filters fuel from internal fuel tank prior
to entering fuel pump.
15
OIL FILTER
Throw-away element which filters oil from oil sump prior to
entering engine.
16
LOW OIL PRESSURE SWITCH
Switch set to automatically shutdown engine when oil pressure
drops below 4 psi (27.579 kPa).
17
STARTING AID HANDPUMP
Supplies ether to engine air intake for starting in cold weather. A
different cold start system, not using a handpump, is used on
Model 350 PAFN.
18
FUEL TANK
Retained by hold down straps to frame assembly. Provides fuel
storage and has 19 gallon (71.9 liters) capacity.
19
FILTER/SEPARATOR
Throw away element which removes nearly 100 percent of water
and solid contaminants down to one micron in size.
20
FRAME ASSEMBLY
Provides mounting of engine assembly, pump and components.
Contains axle assembly, wheels and tires, and towbar.
NOTE:
Fuel pressure controller (item 21), control box (item 22) and actuator (item 23) are
only used on the regulated models.
21
PRESSURE CONTROLLER
Provides manual and automatic modes of operation. In automatic
mode senses pump pressure. Provides control of engine speed that
determines pump discharge pressure.
22
CONTROL BOX
Receives signals from the pressure controller and senses engine
speed through a magnetic pick-up and signals the actuator.
23
ACTUATOR
Increases or decreases engine speed through the engine fuel
injection pump.
1.12
DIFFERENCES BETWEEN MODELS.
a.
Differences between Model 350 PAFN and Model ADC 1500, the regulated models are as follows: Model 350
PAFN uses a filter separator with spin-on filter element and priming pump; an automatic, electro-mechanical cold start
system; the F3L912D-OPT (Optimized) engine; and four panel light assemblies with rheostat control. Model ADC 1500
uses a bowl type filter separator, a mechanical cold start system with handpump, one light assembly and the F3L912
engine.
b.
Differences between Model 350 PAFN and the Unregulated Models: Model 350 PAFN uses a filter separator with
spin on filter element and priming pump; an automatic, electro-mechanical cold start system; the F3L912D-
OPT(Optimized) engine; and the regulation system components, consisting primarily of the pressure controller, the fuel
control actuator, a control box, a magnetic pickup; and four panel light assemblies with rheostat control. The unregulated
models use a bowl type filter, a mechanical cold start system with handpump, one panel light, the F3L912 engine and a
plunger type fuel control solenoid.
c.
Differences between Model ADC 1500 and the unregulated models: Model ADC 1500 uses the regulation system
components, consisting primarily of the pressure controller, the fuel control actuator, a control box and a magnetic pickup,
K , while the unregulated models use a plunger type solenoid and rod type throttle control to control fuel flow to the
engine.
Change 1 1-7
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