Chapter VI Fuel System
Great Wall Baoding Internal Combustion Engine
Manufacturing Company Limited
409
Fig. 6-2-22 Removing the High-Pressure fuel
pump (for DELPHI fuel supply system)
Fig. 6-2-23 Installing the high-pressure fuel
pump
Fig. 6-2-24 Installing the fuel inlet pipe
component fuel rail
Removing the high-pressure fuel pump assembly
⑥
(1) Remove a hexagon flange nut and 2 hexagon flange
bolts (M8×30) used to fasten the high-pressure fuel
pump to the cylinder block as shown in Fig. 6-2-22.
(2) Remove the high-pressure fuel pump assembly from
the left side of the cylinder block.
Attention:
(1) While removing the fuel inlet pipe of the fuel rail, be
sure to evenly and simultaneously loose the connectors
at the two ends of the fuel pipes, so as to avoid any fuel
pipe deformation.
(2) Keep the high-pressure fuel pump, fuel inlet pipe
component of the fuel rail and the high-pressure fuel rail
clean, and avoid bumping.
(3) Wrap each fuel hole on the high-pressure fuel pump
by the rubber covers (or equivalent articles) to avoid the
introduction of foreign matters.
Installation
Installing the high-pressure fuel pump assembly
⑥
(1) Install the high-pressure fuel pump to the left of the
cylinder block, and tighten a hexagon flange nut and 2
hexagon flange bolts (M8×30) used to fasten the
high-pressure fuel pump by specified torque as shown
in Fig. 6-2-23.
(2) After the installation, check the high-pressure fuel
pump assembly for deviation.
Tightening torques for the fastening bolts and nuts of
high-pressure fuel pump:
23 N•m ± 7 N•m
Installing the fuel inlet pipe component of fuel rail
⑤
(1) Remove the dust shield for fuel inlet pipe of fuel rail,
install the fuel rail fuel inlet pipe, and tighten the pipe
connectors on the fuel rail and high-pressure fuel pump
ends.
(2) Install the fuel inlet pipe clamp components of fuel
rail to the air inlet manifold and tighten them with a
hexagon flange bolt (M6×12). See Fig. 6-2-24.
Tightening torques for the pipe connectors of fuel inlet
pipe components of fuel rail:
32 N•m±3 N•m
Caution:
Make sure to tighten the pipe connectors
Cylinder body
Fuel return hose
component
Fuel inlet pipe of
fuel injector
Fuel inlet pipe of fuel rail
