MAINTENANCE MANUAL OF GW4D20/GW4D20B TURBOCHARGED DIESEL ENGINES
170
Great Wall Baoding Internal Combustion Engine
Manufacturing Company Limited
Fig. 4-4-34 Installing the upper body of oil
pan and tightening of bolts
Fig. 4-4-35 installing the oil collector
assembly
upper body of oil pan and the cylinder body is clean
before reapplying glue.
Screw down the 15 hexagon flange face bolts (M8×25,
M6×20, M6×110 and M8×45) as per specified torque and
in proper order. See Fig. 4-4-33 and 4-4-34.The joint face
should be firmly contacted without any looseness.
Tightening torque for fastening bolt of oil pan upper
body
M6
9 N·
m±3 N·
m
M8
23 N·
m±3 N·
m
(3) Apply an appropriate amount of lubricating oil to the
oil collector sealing positions, then install the oil collector
gasket after aligning it to the oil suction hole of the oil
pan, and screw down the 2 hexagon flange face bolts
(M6×6). See Fig. 4-4-35.
Attention:
Install and fix the 2 hexagon flange face
bolts (M8×12) on the fixing oil collector bracket after
installing oil pan.
Mobil API CI-4 lubricating oil
Tightening torque for fastening bolt of oil collector
M6
9 N·
m±3 N·
m
M8
23 N·
m±3 N·
m
Fig. 4-4-36 Installing the lower body of oil
pan and tightening of bolts
(4) Check the joint surface between the upper body and
the lower body of the oil pan for dirt or scratch, and apply
rubber plane sealant to it. Install the lower body to the
upper body of the oil pan, and screw down the 14
hexagon flange face bolts (M6×12) as per the specified
torque and in proper order. See Fig. 4-4-36.
LOCTITE587 plane sealant.
Tightening torque for fastening bolt at lower body of
oil pan
9 N·
m±3 N·
m
Attention:
—— Many fastening bolts are installed on the oil pan,
and all these bolts should be tightened without any
omission. Otherwise, oil leakage may occur.
——Make sure the joint surface between the upper and
lower bodies of oil pan is clean before reapplying glue.
Upper body
of oil pan
Oil collector
assembly
