Operation and maintenance manual

Section 200-0040
SM 1398 Rev 1 2-00
1
FUEL SYSTEM - Fuel System
SM - 1895
DESCRIPTION
Numbers in parentheses refer to Fig. 1.
The fuel system consists of the DDEC electronic fuel
system controls, fuel manifolds (integral with the
cylinder head), primary fuel filter (3), secondary fuel
filter (9), fuel pump (5), electronic control module
(ECM) cooling plate (7), electronic unit injectors (15)
fuel cooler (16), fuel tank (1) and the necessary
connecting fuel lines.
There are two spin-on type fuel filters mounted on the
left hand side of the engine. Primary fuel filter (3) is in
the fuel flow and acts as a strainer and secondary fuel
filter (9) filters the fuel after having passed through
primary fuel filter (3). The word 'Primary' or 'Secondary
is cast into the top of the respective adaptor.
Fuel pressure sensor (10) is installed into the side of
secondary fuel filter (9) and sends an electronic signal
to the ECM telling it what the engine fuel pressure is at
any given speed.
Fuel temperature sensor (11) is installed in a tee on the
top of secondary fuel filter (9) and sends an electrical
signal to the ECM indicating fuel inlet temperature. The
ECM uses this information to calculate fuel
consumption.
Note: Both fuel pressure sensor (10) and fuel
temperature sensor (9) are non-serviceable items and
should be replaced as individual units. No adjustment
is required.
Fig. 1 - Fuel Lines and Components
1 - Fuel Tank
2 - Fuel Supply Line
3 - Primary Filter
4 - Fuel Line
5 - Fuel Pump
6 - Fuel Line
7 - ECM Cooling Plate
22 - Fuel Return Line
23 - Restricted Fitting
24 - Filler Cap
25 - Bolt
26 - Washer
27 - Spring
28 - Locknut
29 - Strainer
15 - Electronic Unit Injector (EUI)
16 - Fuel Cooler
17 - Mounting Bracket
18 - Mounting Bracket
19 - Bolt
20 - Padlock
21 - Key
8 - Fuel Line
9 - Secondary Filter
10 - Fuel Pressure Sensor
11 - Fuel Temperature Sensor
12 - Shut Off Cock
13 - Fuel Line
14 - Fuel Line