MAINTENANCE MANUAL OF GW4D20/GW4D20B TURBOCHARGED DIESEL ENGINES
376
Great Wall Baoding Internal Combustion Engine
Manufacturing Company Limited
Fig. 5-20-33 Installing the lower body of oil
pan
(4) Check the joint faces of the oil pan upper and the
lower body for spoils and scratches; apply silicon rubber
plain sealant evenly to the joint faces and then install
the lower body to the upper body and tighten the 14
hexagon flange bolts (M6×12) with required torque and
in required order as shown in Fig. 5-20-33.
LOCTITE587 flat sealant.
Tightening torque for fastening bolt at lower body of
oil pan
9N·
m±3N·
m
Fig. 5-20-34 Tightening order of fastening
bolts of flywheel
Fig. 5-20-35 Installing the clutch assembly
Attention:
——Many fastening bolts are installed on the oil pan,
and all the bolts should be tightened. Otherwise, oil
leakage may occur.
——Before applying sealant again, make sure the joint
faces of the upper and lower bodies of the oil pan are
clean.
Installing the electric wheel gear ring assembly
⑨
(1) Insert the cylindrical pin into the pin hole at the
flange face of the crankshaft output end.
(2) Align the pin holes, install the flywheel gear ring
assembly to the crankshaft and tighten the 8 flywheel
bolts with required torque and in required order as
shown in Fig. 5-20-34.
Tightening torque for fastening bolt of flywheel gear
ring assembly.
75N·
m±5N·
m
Attention:
Apply thread fixing agent to the thread
of the flywheel bolt before fitting it.
LOCTITE243 thread fixative.
Check whether the end face runout is within the
range of specified values. This value should be or less
than 0.12.
(3) Install pressure plate dowel pin into flywheel gear
ring assembly.
Installing the clutch assembly
⑧
(1) Driven disc assembly
——Grease the spline of the clutch driven disc hub with
