MAINTENANCE MANUAL OF GW4D20/GW4D20B TURBOCHARGED DIESEL ENGINES
132
Great Wall Baoding Internal Combustion Engine
Manufacturing Company Limited
Fig. 4-1-36 Installing the EGR Condenser
Fig. 4-1-37 Installing the fuel injector
assembly
4-1-36.
Tightening torque for EGR system fastening bolt
23N·
m±3N·
m
Reinstalling the fuel injector assembly
⑦
(1) Tighten the supporting bolts of the fuel injector ballast
by using the required torque onto the cylinder head.
Tightening torque for supporting bolt of fuel injector
ballast
25 N·
m
~
3 N·
m
(2) Install the copper washer and O-ring to the fuel
injector and make sure there is only one copper washer
on the fuel injector and the copper washer is laid
horizontally
.
(3) Plug the fuel injectors into the mounting holes on the
cylinder head corresponding to cylinders 1, 2, 3 and 4
respectively according to the numbers 1, 2, 3 and 4 on
fuel injector.
(4) Place one end of the fuel injector ballast on ballast
supporting bolt and the other end in fuel injector ballast
groove. See Fig. 4-1-37.
(5) Install and tighten the fastening bolt washer
component of fuel injector ballast as per the required
torque.
图
4-1-38
装配气缸盖罩密封垫
Fig. 4-1-38
Installing cylinder head packing
Tightening torque for fastening bolt of fuel injector
ballast
23 N·
m
~
35 N·
m
After the installation, make sure there is no gas
leakage from the oil injector gasket.
Reinstalling the cylinder head cover assembly
⑥
(1) Clean the cylinder head cover packing groove.
(2) Check if the cylinder head cover packing is intact, and
embed it into the cylinder head cover sealing groove, as
shown in Fig. 4-1-38.
(3) Install the cylinder head cover to the cylinder head,
tighten the 16 hexagon flange bolts (M6×20) fastening
the cylinder head cover to the cylinder head as per
specified torque. See Fig. 4-1-39.
Tightening torque for fastening bolt of cylinder head
cover
9 N·
m±3 N·
m
Water inlet pipe
EGR condenser
Water outlet pipe
Air intake
pipe
Exhaust
manifold pipe
Fuel injector
assembly
Cylinder head
cover
Cylinder head
cover packing