MAINTENANCE MANUAL OF GW4D20/GW4D20B TURBOCHARGED DIESEL ENGINES
360
Great Wall Baoding Internal Combustion Engine
Manufacturing Company Limited
Fig. 5-19-21 Installing the fuel inlet pipe and
the fuel return hose for the fuel injector
Fig. 5-19-41 Installing the timing system
Install the fuel inlet pipe of the fuel injector, and evenly
tighten the pipe connectors on the two ends of the fuel
inlet pipe of the fuel injector as per specified torque as
shown in Fig. 5-19-40.
Make sure the oil pipe is sealed without oil leakage
after installation.
Tightening torque of 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 at the same time
in installation so as to avoid the oil pipe deformation.
Installing the timing system
⑤
(1) Install the camshaft timing pulleys and the
crankshaft timing pulleys.
——Fit the woodruff key and the camshaft timing pulley
to the exhaust camshaft, and tightly tighten the
fastening bolt and gasket subassembly according to
specified torques. The camshaft timing pulley should be
properly fitted without any inclination.
Tightening torques for the fastening bolt and gasket
subassembly of the camshaft timing pulley
110N·
m±5N·
m
– Fit the woodruff key and the crankshaft timing pulley
to the crankshaft, and tightly tighten the fastening bolt
according to specified torques; the crankshaft timing
pulley should be properly fitted without any inclination.
Tightening torque of fastening bolt of crankshaft
timing pulley
185N·
m~195N·
m
Attention:
use the cylindrical pin to fix the
overhead camshaft timing pulley and the flywheel gear
ring assembly when tightening the timing pulleys of
overhead camshaft and crankshaft.
Fuel feeder of
the fuel
injector
Fuel return hose
component
Fuel inlet pipe
of fuel rail
Timing rear hood
