Chpter IV Mechanical System
Great Wall Baoding Internal Combustion Engine
Manufacturing Company Limited
121
Fig. 4-1-5 Removing heater water return
pipe component
——After removing the fuel inlet pipes of both fuel
injector and fuel rail, use clean plug covers to cover the
fuel inlet ports for fuel injector and high-pressure fuel rail
and cover both ends of fuel inlet pipe of fuel injector and
fuel rail, in order to prevent impurities from blocking the
fuel injector.
Disassembling the fuel return hose component
④
(1) Remove the fuel return hose bracket and clamp.
(2) Select the DELPHI fuel injector, pull out the 4 fuel
return hoses connected to fuel injector, and then take
down the fuel return hose component. See Fig. 4-1-4.
(3) Use the BOSCH or XINFENG fuel injector. Use a tool
to push out the clip, pull out the fuel return connector
from the fuel injection circuit, and then remove fuel return
hose component.
Disassembling
the
heater
water
return
pipe
component
⑤
(1) Remove the 2 hexagon flange bolts (M6×16)
connecting the heater water return pipe component to the
cylinder head cover. See Fig. 4-1-5.
(2) Remove the 1 hexagon flange bolt (M6×16)
connecting the heater water return pipe component to the
cylinder head cover, and take down the heater water
return pipe. See Fig. 4-1-5.
Fig. 4-1-6 Removing the cylinder head cover
assembly
Disassembling the cylinder head cover assembly
⑥
(1) Remove the 2 hexagon flange bolts (M8×16)
fastening the water outlet pipe connecting pipe
component, and take down the water outlet pipe
connecting pipe component.
(2) Remove the 16 hexagon flange bolts (M6×20)
fastening the cylinder head cover to the cylinder head,
and take down the cylinder head cover. See Fig. 4-1-6.
(3) Take out the packing from the sealing groove of
cylinder cover.
Check the cylinder head packing and replace it if
there is any damage or deformation.
Cylinder head
cover
Water outlet
pipe connecting
pipe component
Cylinder head
cover packing
