MAINTENANCE MANUAL OF GW4D20/GW4D20B TURBOCHARGED DIESEL ENGINES
270
Great Wall Baoding Internal Combustion Engine
Manufacturing Company Limited
Fig. 5-8-20 Installing the fuel inlet pipe of the
fuel injector
Fig. 5-8-21 Installing the camshaft timing
pulley
Installing the fuel inlet pipe of fuel injector
③
(1) Remove the plug covers at both ends of the fuel
injector.
(2) 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. 5-8-20.
Make sure the fuel inlet pipe of fuel injector is
sealed properly without leakage after installation.
Tightening torque for fuel inlet pipe connector of
fuel injector
32N·
m±3N·
m
Attention:
Make sure to evenly tighten the two
ends of the fuel injector fuel inlet pipe connectors at the
same time in 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.
Fig. 5-8-22 Installing the timing system
(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. 5-8-21.
Tightening torque for bolt washer component of
camshaft timing pulley
110N·
m±5N·
m
(3) Align the timing marks on damping pulley and timing
hood II. See Fig. 5-8-22.
Fuel inlet pipe
of injector
High-pressure
fuel rail
Timing mark
Bone-line
Camshaft
timing pulley
Timing mark of damping pulley
Damping pulley
Timing mark of timing
hood component II
