Chapter V GW4D20 / GW4D20B Turbocharged Diesel Engine
Great Wall Baoding Internal Combustion Engine
Manufacturing Company Limited
257
Fig. 5-7-11 Installing the camshaft bearing
cap
Fig. 5-7-12 Installing the fuel injector
assembly
Fig. 5-7-13 Installing the fuel injector
assembly
Standard axial clearance of camshaft
0.060~0.115mm
Installing the camshaft bearing cap
⑨
(1) Apply the anaerobic plane sealant to the junction
surface between the camshaft bearing cap and the
cylinder head.
LOCTITE510 anaerobic plane sealant.
Attention:
——The sealant on the junction surface between
camshaft bearing cap and cylinder head should be
cleared properly if the old cylinder head is to be used.
——The removal and installation of bolts after sale
should not be applied more than two times; replace
them when it exceeds two times.
(2) Tightly screw the 16 hexagon flange face bolts
(M6×35) of the camshaft bearing cap according to
specified torques and sequence, and then screw down
the 6 hexagon flange face bolts (M6×20) around them
according to the requirements. See Fig. 5-7-11.
Tightening torque for the fastening bolt of camshaft
bearing cap
9N·
m±3N·
m
Attention:
Prevent oil seal and plug cover from
tilting when screwing down the fastening bolts of
camshaft bearing cap.
(3) Tighten the hexagon flange face bolt (M6×20)
connecting the vacuum pump and the camshaft bearing
cap according to specified torque.
Tightening torque for vacuum pump fastening bolt
9N·
m±3N·
m
Installing the fuel injector assembly
⑧
(1) Tighten the support bolts of the fuel injector ballast
by the required torques onto the cylinder head.
Tightening torque for supporting bolt of fuel injector
ballast
23N·
m±3N·
m
Camshaft
bearing cap
Cylinder head
Fuel injector
assembly
Sectional view
of cylinder cover
