Chpter IV Mechanical System
Great Wall Baoding Internal Combustion Engine
Manufacturing Company Limited
133
Fig. 4-1-39 Installing the cylinder head cover
and the water outlet pipe connecting pipe
component
Fig. 4-1-40 Installing the heater water return
pipe
Fig. 4-1-41 Installing the fuel inlet pipe and
return hose of fuel injector
Reinstalling the heater water return pipe component
⑤
(1) Install the heater water return pipe component and
tighten the 2 hexagon flange bolts (M6×16) connecting
the heater water return pipe and cylinder head cover. See
Fig. 4-1-40.
(2) Tighten the hexagon flange bolt (M8×16) connecting
the heater water return pipe and cylinder head cover. See
Fig. 4-1-40.
Tightening torques for fastening bolts of heater
water return pipe component
M6×16
9 N·
m±3 N·
m
M8×16
23 N·
m±3 N·
m
(3) Install the water outlet pipe connecting pipe, and
tighten the 2 hexagon flange bolts (M8×16) connecting
the water outlet pipe and cylinder head cover. See Fig.
4-1-39.
Tightening torque for fastening bolt of water outlet
pipe connecting pipe component
23 N·
m±3 N·
m
Reinstalling the fuel return hose component
④
(1) Use DELPHI fuel injector. Insert respectively the fuel
return rubber hoses into 4 injector heads and position
them in place. See Fig. 4-1-41.
(2) Use BOSCH or XINFENG fuel injector. Remove the
dust cap from the upper end of the fuel injector. Install 4
short connectors of the fuel return hose into the 4 holes
at the upper end of the fuel injector, and fix them tightly
with the spring clips. Install the other long connector to
the fuel return tee on the high pressure pump, and fix it
tight with a small steel strip type elastic hoop.
(3) Install the fuel return hose support and clamp.
Make sure the fuel return hose is sealed properly
without leakage after installation.
Water outlet pipe
connecting pipe
component
Cylinder head
cover
Fuel return hose of
fuel injector
Fuel inlet pipe
of injector
