Doosan DX22 - Secondary Fuel Filter

8. Fuel System
118
Installation
1. Installing the low-pressure fuel pump adapter for bank no. 1
EDX22190209
EDX22190210
1) After temporarily tightening the fuel inlet port adapter to
the low-pressure fuel pump inlet with the sealing washer,
tighten it to the specified torque.
Then, after temporarily tightening the fuel outlet port
adapter to the low-pressure fuel pump outlet with the
sealing washer, tighten it to the specified torque.
During this step, make sure that the angle of the adapter
port is parallel to the flange of the high-pressure fuel pump.
2. Installing the low-pressure fuel pump adapter of bank no. 2
EDX22190211
1) After temporarily tightening the fuel inlet port adapter to
the low-pressure fuel pump inlet with the sealing washer,
tighten it to the specified torque.
Secondary Fuel Filter
Components
1. The secondary fuel filter consists of the fuel filter head
and two fuel filter cartridges.
EDX22190212
Torque
Low-pressure fuel
pump fuel
inlet port adapter
2.5 ±0.2 kgf·m
(18.0825 ±1.4466
lbf·ft)
Low-pressure fuel
pump fuel
outlet adapter hollow screw
2.5 ±0.2 kgf·m
(18.0825 ±1.4466
lbf·ft)
A High-pressure fuel pump of bank no. 1
B Low-pressure fuel pump of bank no. 1
C Hollow screw of fuel outlet port of low-pressure fuel pump
D Sealing washer of fuel outlet port of low-pressure fuel pump
E Fuel outlet port adapter of low-pressure fuel pump
F Sealing washer of fuel inlet port of low-pressure fuel pump
G Fuel inlet port adapter of low-pressure fuel pump (SW19)
AB
C
D
E
F
G
Adapter port assembly angle: 0° ± 1°
HP INJ. PUMP
FLANGE
SURFACE
Torque
Low-pressure fuel
pump fuel
inlet port adapter
2.5 ±0.2 kgf·m
(18.0825 ±1.4466
lbf·ft)
A High-pressure fuel pump of bank no. 2
B Low-pressure fuel pump of bank no. 2
C
Sealing washer of fuel inlet port of low-
pressure fuel pump
D
Fuel inlet port adapter of low-pressure
fuel pump (SW19)
A Secondary fuel filter
B Secondary fuel filter bracket
C Fuel pipe hollow screw (SW27)
A
B
C
D
A
B
C
D
E
F
G