Chapter V GW4D20 / GW4D20B Turbocharged Diesel Engine
Great Wall Baoding Internal Combustion Engine
Manufacturing Company Limited
295
Fig. 5-10-26 Installing the fuel inlet pipes of
fuel injector and fuel rail
Fig. 5-10-27 Installing the camshaft timing
pulley
Fig. 5-10-28 Installing the timing system
(2) Use the BOSCH or XINFENG fuel injector. Remove
the dust cap from the upper end of the fuel injector.
Install 4 short connectors of the fuel return hose in 4
holes at the upper end of the fuel injector, and fix them
tight with the spring clips. Install the other long
connector to the fuel return tee on the high pressure
pump, and fix it tight with a single-ear stepless clip.
(3) Install the fuel return hose support and clamps.
After the installation, make sure the components of
fuel return hose is sealed so strictly that no fuel will leak
from the fuel return hose.
Fuel inlet pipes of fuel injector and fuel rail
③
(1) Install the fuel inlet pipe of fuel injector; tighten
evenly the pipe connectors at both ends of the 4 fuel
injector fuel inlet pipes as shown in Fig. 5-10-26.
(2) Install the fuel inlet pipe of the fuel rail; tighten evenly
the pipe connectors at both ends of the fuel pipes.
Make sure the fuel inlet pipes of fuel injector and
fuel rail are sealed without leakage after installation.
Tightening torque for fuel inlet pipe connector of
fuel injector and fuel rail
32N·
m±3N·
m
Attention:
Make sure to evenly tighten the two
ends of the fuel injector and the fuel rail fuel inlet pipe
connectors during installation so as to avoid the oil pipe
deformation.
Installing the timing system
②
(1) Install the woodruff key to the exhaust camshaft,
install the timing pulley to the exhaust camshaft and
tighten the fastening bolt washer component to the
required torque. The camshaft timing pulley should be
pressed and installed to the right position without
deflection.
(2) Adjust the mark position of the scribed line on the
camshaft timing pulley till this position aligns with the
junction seam (on the exhaust side) which is between
the cylinder head and the camshaft bearing cap. See
Fig. 5-10-27.
Tightening torque for bolt washer component of
camshaft timing pulley
110N·
m±5N·
m
Fuel inlet pipe of
injector
Fuel inlet
pipe of fuel
rail
Fuel return hose
component
Timing mark
Bone-line
Camshaft
timing pulley
Timing mark of damping
pulley
Damping pulley
Timing mark of timing
hood component II
