MAINTENANCE MANUAL OF GW4D20/GW4D20B TURBOCHARGED DIESEL ENGINES
222
Great Wall Baoding Internal Combustion Engine
Manufacturing Company Limited
Fig. 5-2-17 Installing the refrigeration
compressor
23N·
m±3N·
m
(2) Install the wire connector of electromagnetic clutch.
(3) Install the generator belt, use a tool to turn the
tension pulley, and install it after the belt is loose
enough. After the installation, check the generator belt
for any excessive tension or any insufficient tension.
Fig. 5-2-18 Installing the fuel hose
Fig. 5-2-19 Installing the engine harness
Installing the wire of engine oil pressure switch
⑦
Connect the wire connector of engine oil pressure
switch.
Installing the fuel hose
⑥
(1) Connect the fuel inlet hose and the fuel return hose
(see Fig. 5-2-18).Then tighten the clamp firmly.
(2) After installation, check connectors of the fuel inlet
hose and the fuel return hose, and make sure they are
sealed firmly without any fuel leakage.
Installing harness
⑤
(1) Insert various sensor plugs on the engine harness to
the corresponding sensors respectively. Connect plugs
of fuel injector, high-pressure fuel pump, ECU, glow
plug, turbocharger, EGR valve, and electromagnetic
valve of A/C compressor, etc. See Fig. 5-2-19.
(2) Check all connectors of the harness for any incorrect
insertion.
(3) Install the harness bracket, and fasten the harness
clamp.
Attention:
Harness connectors are equipped with
the self-locking devices. Hold the harness connectors
stably during installation and make sure they are
properly installed.
Refrigeration
compressor
Cylinder body
