Chapter V GW4D20 / GW4D20B Turbocharged Diesel Engine
Great Wall Baoding Internal Combustion Engine
Manufacturing Company Limited
243
Fig. 5-5-8 Removing the exhaust manifold
pipe and gasket component
Fig. 5-5-9 Installing the exhaust manifold pipe
and gasket component
(2) Remove the 8 hexagon flange bolts fastening the
exhaust manifold pipe, and then take off the exhaust
manifold pipe and exhaust manifold pipe gasket. See
Fig. 5-5-8.
(3) Check the exhaust manifold pipe gasket and replace
it if there is any damage, deformation or burnout.
Installation
Installing the heat shield of exhaust manifold pipe
and exhaust manifold pipe
⑥
(1) Install the exhaust manifold pipe gasket to the
cylinder head exhaust manifold pipe.
(2) Install the exhaust manifold pipe and tighten the 8
hexagon flange nuts according to the specified torque.
See Fig. 5-5-9.
Tightening torque for fastening bolt of exhaust
manifold pipe
30N·
m±3N·
m
Fig. 5-5-10 Installing the heat shield of
exhaust manifold pipe
(3) Install the heat shield to the exhaust manifold pipe
and tighten the 4 hexagon flange bolts (M6×12)
according to the specified torque. See Fig. 5-5-10.
Tightening torque for fastening bolt of heat shield
of exhaust manifold pipe
9N·
m±3N·
m
Installing the air intake pipe of EGR condenser
⑤
(1) Install the air intake pipe and air intake port gasket of
EGR condenser.
(2) Install the air intake pipe of EGR condenser and
tighten the 2 hexagon flange bolts (M8×20) connected
with EGR condenser component and 2 hexagon flange
nuts (M8×1.25) at the air intake pipe of EGR condenser
and exhaust manifold pipe. See Fig. 5-5-11.
Tightening torque for fastening bolt and nut of air
intake pipe of EGR condenser
Exhaust
manifold pipe
gasket
Exhaust
manifold pipe
Exhaust
manifold pipe
Cylinder head
assembly
Exhaust
manifold pipe
Heat shield
Exhaust manifold
pipe gasket
