MAINTENANCE MANUAL OF GW4D20/GW4D20B TURBOCHARGED DIESEL ENGINES
320
Great Wall Baoding Internal Combustion Engine
Manufacturing Company Limited
Fig. 5-15-5 Removing the oil pan lower body,
oil collector and oil pan upper body
Removing the oil collector
⑤
(1) Use a spanner to remove the 2 hexagon flange face
bolts (M6×16) fastening the engine oil pipe and the 2
hexagon flange face bolts (M8×12) fastening the oil
collector support. See Fig. 5-15-5.
(2) Take off the oil collector and gasket from the oil pan
upper body.
(3) Check the gasket. It must be replaced if damaged or
deformed.
Removing the upper body assembly of oil pan
⑥
(1) Use a spanner to remove the 15 hexagon flange
face bolts (M6×20, M6×110, M8×25 and M8×45)
fastening the oil pan upper body to the lower cylinder
body in order. See Fig. 5-15-5.
(2) Take off the oil pan upper body from the lower body.
Fig. 5-15-6 Installing the upper body
assembly of oil pan
Fig. 5-15-7 Installing the oil collector
assembly
Installation
Installing the upper body assembly of oil pan
⑥
Check the junction surface between the oil pan
upper body and the cylinder body for dirt and scratches.
(1) Apply silastic plane sealant to the junction surface
between the cylinder body and the oil pan upper body
evenly.
LOCTITE587 plane sealant.
(2) Install the oil pan upper body to the cylinder body
assembly and tighten the 15 hexagon flange face bolts
(M8×25, M6×20, M6×110 and M8×45) to the specified
torque in order. See Fig. 5-15-6.
Tightening torque for the fastening bolt of oil pan
upper body
M6
9N·
m±3N·
m
M8
23N·
m±3N·
m
Attention:
Clear the residual sealant completely on
the junction surface between the cylinder body and the
oil pan upper body before applying sealant again.
Installing the oil collector
⑤
(1) Apply an appropriate amount of lubricating oil to the
oil collector seals.
Upper body
of oil pan
Oil collector
Lower body of oil pan
Cylinder body
Upper body
of oil pan
Upper body
of oil pan
Oil collector
assembly
