MAINTENANCE MANUAL OF GW4D20/GW4D20B TURBOCHARGED DIESEL ENGINES
460
Great Wall Baoding Internal Combustion Engine
Manufacturing Company Limited
Fig. 10-2-5 Installing the EGR valve
Fig. 10-2-6 Installing the EGR condenser
Fig. 10-2-7 Installing the harness plug of the
EGR valve
Installation
Installing the EGR valve assembly
③
(1) Install 2 double end stud bolts at the air intake
manifold pipe. See Fig. 10-2-5.
(2) Install the EGR valve assembly at the air intake
manifold pipe and tighten 2 hexagon flange nuts as per
the specified torque.
Tightening torque for the fastening nut of the EGR
valve.
23 N • m± 3 N • m
Installing the EGR condenser component
②
(1) Install the EGR condenser component at the rear
end of the cylinder head and untighten the bolt
temporarily.
(2) Install the double end stud bolts at the exhaust
manifold pipe, the EGR condenser gasket at the EGR
condenser component, and the EGR condenser air
intake pipe gasket at the exhaust manifold pipe. Install
the EGDD condenser air intake pipe and tighten 2
hexagon flange face nuts and 2 hexagon flange face
bolts (M8x20) as per the specified torque. See Fig
10-2-6.
(3) Install the EGR condenser gasket at the EGR
condenser component and the EGR condenser exhaust
pipe gasket at the EGR valve seat. Install the EGR
condenser exhaust pipe and tighten 2 hexagon flange
face bolts (M8x16) as per the specified torque. See Fig.
10-2-6.
Tightening torque for the fastening bolt of the EGR
condenser air intake/outlet pipes.
23 N • m± 3 N • m
(4) Install the EGR condenser water inlet pipe and water
outlet pipe, and fix them tight with the single-ear
stepless clip. See Fig. 10-2-6.
(5) Install 1 hexagon flange face bolt (M10x16)
fastening the EGR condenser bracket and the cylinder
head. Fasten the EGR condenser.
Tightening torque for the fastening bolt of the EGR
condenser bracket.
45 N • m± 3 N • m
EGR valve
assembly
Air intake
manifold pipe
Air intake
pipe
Water outlet pipe
EGR condenser
Air outlet pipe
Water inlet
pipe
EGR valve
