MAINTENANCE MANUAL OF GW4D20/GW4D20B TURBOCHARGED DIESEL ENGINES
228
Great Wall Baoding Internal Combustion Engine
Manufacturing Company Limited
Fig. 5-2-8 Removing the fuel hose
Fig. 5-3-9 Removing the refrigeration
compressor assembly
Removing the fuel hose
⑥
(1) Remove the clamp that fixes the fuel inlet hose and
the fuel return hose.
(2) Remove the fuel inlet hose and the fuel return hose
respectively, as shown in Fig. 5-3-8.
The fuel hose should be added with a label before
being removed, for the purpose of easy recognition
upon the latest connection.
Removing the wire of engine oil pressure switch
⑦
Remove the wire connector that connects the engine oil
pressure switch.
Warning:
Pull the plug connector instead of the
harness (the wire) when separating the connector.
Removing the refrigeration compressor assembly
⑧
(1) Turn the accessory tension pulley with tools until the
generator belt is loose enough, and then remove the
generator belt.
(2) Remove the wire connector of electromagnetic
clutch.
(3) Remove 4 hexagon flange bolts (M8×85) fastening
the refrigeration compressor to the left side of the
cylinder body, and take off the refrigeration compressor
assembly. See Fig. 5-3-9.
Fig. 5-3-10 Removing the power steering
pump assembly
Removing the power steering pump assembly
⑨
(1) Remove the fuel inlet hose and the fuel return hose
of the power steering pump.
(2) Remove 1 hexagon flange nut and 1 hexagon flange
bolt (M8×30) fastening the power steering pump to the
bracket of power steering pump, and then take off the
bracket of power steering pump. See Fig. 5-3-10.
(3) Remove 3 hexagon flange bolts (M8×25, M8×30)
fastening the bracket of power steering pump to the
cylinder body, and then take off the bracket of power
steering pump. See Fig. 5-2-10.
Refrigeration
compressor
Cylinder body
Cylinder
body
