MAINTENANCE MANUAL OF GW4D20/GW4D20B TURBOCHARGED DIESEL ENGINES
440
Great Wall Baoding Internal Combustion Engine
Manufacturing Company Limited
Fig. 8-2-26 Installing the lower body of oil pan
Fig. 8-2-27 Removing the oil collector
Fig. 8-2-28 installing the oil collector assembly
Removal
Preparation
(1) Disconnect the earthing cable of storage battery.
(2) Lift the vehicle.
(3) Drain out the lubricating oil in the engine lubrication
system.
Warning:
Risk of burn from the engine body and
the hot engine oil. Properly handle the waste engine oil
and protect the environment.
Removing the lower body assembly of oil pan
①
(1) Remove 14 hexagon flange bolts (M6 x 12)
fastening the lower and upper bodies of oil pan with
spanner orderly as shown in Fig. 8-2-26.
(2) Take off the oil pan lower body from the upper body.
Removing the oil filter
②
(1) Remove 2 hexagon flange bolts (M6x16) fastening
oil pipe with spanner. See Fig. 8-2-27.
(2) Remove 2 hexagon flange bolts fastening the oil
collector bracket with spanner.
(3) Take off the oil collector from the upper body of oil
pan. See Fig. 8-2-27.
Installation
Installing the oil collector
②
(1) Align the oil collector with the oil suction hole of oil
pan and install the gasket of oil collector. Install 2
hexagon flange bolts (M6x16) and screw them down as
per specified torque. See Fig. 8-2-28.
(2) Add appropriate volume of lubricating oil to the oil
collector screen.
Mobil API C1
– 4 lubricating oil.
Attention:
Screw down and install 2 hexagon
flange bolts (M8×12) on the oil collector after installing
the upper body of oil pan.
Tightening torque for fastening bolt of oil collector
M6
9 N • m±3 N • m
M8
23 N • m± 3 N • m
Upper body of
oil pan
Lower body of
oil pan
Oil pan upper part
assembly
Oil collector
