MAINTENANCE MANUAL OF GW4D20/GW4D20B TURBOCHARGED DIESEL ENGINES
250
Great Wall Baoding Internal Combustion Engine
Manufacturing Company Limited
Fig. 5-6-11 Installing the camshaft position
sensor
Fig. 5-6-12 Installing the heater water return
pipe component
Fig. 5-6-13 Installing the vacuum control valve
(2) Install the camshaft position sensor to cylinder cover
and tighten the 2 hexagon flange bolts (M6×12) to the
specified torque. Make sure the sensor installing
surface fits well with the cylinder cover installing surface
after installation. See Fig. 5-6-11.
Tightening torque for the fastening bolt of
camshaft position sensor
9N·
m±3N·
m
(3) Connect the camshaft position sensor harness
connector.
Installing the heater water return pipe component
⑦
(1) Install the heater water return pipe component and
vacuum control valve bracket and tighten the 2
hexagon flange bolts (M6×16) at the heater water return
pipe and cylinder cover according to the specified
torque.
Tightening torque for fastening bolt of vacuum
pump control valve bracket
9N·
m±3N·
m
(2) Tighten a hexagon flange bolt (M8×16) connecting
the heater water return pipe to the cylinder head
according to the specified torque. See Fig. 5-6-12.
Tightening torque for fastening bolt of heater water
return pipe component
M8×16
23N·
m±3N·
m
Installing
the
vacuum
control
valve
(VGT
turbocharger)
⑥
(1) Installing the vacuum control valve and tighten the 2
hexagon flange bolts (M6×16). See Fig. 5-6-13.
Tightening torque for fastening bolt of vacuum
control valve
9N·
m±3N·
m
(3) Install the 2 connecting rubber hose to the vacuum
control valve. See Fig. 5-6-13.
Camshaft
position sensor
Cylinder head
Cylinder cover
Water return pipe
component of
heater
Vacuum
control valve
Connecting
rubber hose
Connecting
rubber hose
Bracket
component
