Chapter V GW4D20 / GW4D20B Turbocharged Diesel Engine
Great Wall Baoding Internal Combustion Engine
Manufacturing Company Limited
361
Fig. 5-19-42 Installing the camshaft timing
pulley
Fig. 5-19-43 Installing the timing tension
pulley
Fig. 5-19-44.Installing the timing hood
components, the timing hood and the timing
rear hood
Install the idle wheel assembly and tighten the fastening
bolts as per specified torque.
Tightening torques of fastening bolt of the timing
idle wheel
22N·
m~26N·
m
(3) Adjust the mark position on the camshaft timing belt
pulley so as to align it with the joint (on the exhaust
side) of the cylinder head and the camshaft bearing
cap. See Fig. 5-19-42.
(4) Adjust the crankshaft timing pulley until the scale
mark on the belt pulley is aligned with the arrow on the
oil pump housing.
(5) Install the timing belt. During the installation, make
sure the belts, except the timing tension pulley, are
connected with the pulley firmly without any looseness.
(6) Install the timing tension pulley: Embed the limit
support of timing tension pulley into the position for
mounting the bowl-shaped plug onto the cylinder head.
After the mounting pin of the timing tension pulley is
adjusted by a socket head spanner so that it is aligned
with the notch position, screw the tension pulley bolts
with specified torques. See Fig. 5-19-43.
Tightening torque of fastening bolt of timing tension
pulley
22N·
m~26N·
m
(7) Install the timing hood components I and II, the
timing hood and the timing rear hood. See Fig. 5-19-44.
——Fit the rear timing hood components to the cylinder
head, and screw the hexagon flange bolt (M6×6) with
the specified torque. See Fig. 5-19-41.
Tightening torque of fastening bolt of timing rear
hood
9N·
m±3N·
m
——Insert the sealing strips I and II to the sealing
grooves of timing hoods I and II respectively.
——After aligning the mounting holes of the timing hood
and timing hood components I and II, screw the 15
hexagon flange bolts (M6×16, M10×35 and M10×50) to
the cylinder head and the front cylinder body according
to specified torques.
Tightening torques for fastening bolts of the timing
hood and the timing hood components I and II
Timing mark
Bone-line
Camshaft
timing pulley
Use a hexagon
socket head
spanner to adjust
the mounting hole.
Analog
Notch
