Chapter V GW4D20 / GW4D20B Turbocharged Diesel Engine
Great Wall Baoding Internal Combustion Engine
Manufacturing Company Limited
359
LOCTITE210 anaerobic plane sealant.
——Tightly screw 6 hexagon flange bolts (M6×35) of
the camshaft bearing cap according to specified torques
and sequence, and then screw down the 6 hexagon
flange bolts (M6×20) around them according to the
requirements. See Fig. 5-19-37.
Tightening torque of fastening bolt of overhead
camshaft bearing cap
9N·
m±3N·
m
Attention:
if the original cylinder cap is used, clean
the joint surface of the camshaft bearing cap and the
cylinder cap before applying the sealant.
Fig. 5-19-38 Installing the vacuum pump
assembly
Fig. 5-19-39 Installing the fuel injector
assembly
(6) Install the vacuum pump assembly. See Fig.
5-19-38.
(7) Install the fuel injector assembly.
Screw down the supporting bolt of fuel injector ballast to
the cylinder cap as specified.
Tightening torque of supporting bolt of fuel injector
ballast
23N·
m±3N·
m
——Install the copper washer and O-ring of fuel injector
to the fuel injector, and make sure only one copper
washer is installed to each fuel injector and placed
horizontally.
Place one end of the fuel injector ballast on ballast
supporting bolt and the other end in fuel injector ballast
groove.
(3) Plug the fuel injectors into the mounting holes on the
cylinder head corresponding to cylinders 1
st
, 2
nd
, 3
rd
and
4
th
respectively according to the number 1, 2, 3 and 4
on fuel injector.
Install the tightening bolt assembly of fuel injector
ballast, and screw it down according to the specified
torque, without gas leakage on the injector gasket.
Tightening torque of fastening bolt component of
fuel injector ballast
25N·
m~35N·
m
(8) Install the fuel return hose. See Fig. 5-19-40.
(9) Install the fuel inlet pipe of the fuel injector.
Cylinder head
Vacuum pump
assembly
Fuel injector
assembly
