Great Wall GW491QE, Руководство по обслуживанию

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EM.2-16
5.฀Installation฀of฀inlet฀&outlet฀manifold
(a)Install฀air-inlet฀manifold฀components฀onto฀eight฀stud฀boltson฀the฀left฀side
of฀cylinder฀head,฀and฀have฀the฀positioning฀pinfacing฀exactly฀to฀its฀installation
hole.
(b)Install฀the฀lower฀part฀of฀air฀inlet฀/exhaust฀manifold฀onto฀eight฀stud
bolts฀on฀the฀left฀side฀of฀cylinder฀head,฀followed฀by฀a฀fixing฀using฀relevant
components฀like฀nut,฀washer,฀etc.฀plus฀a฀tightening฀made฀from฀the฀middle
to฀two฀sides.
Tightening฀ torque (50 5)N m
(c)I nstall฀ dust-cover฀ provided฀ for฀ the฀ lower฀ part฀ of฀ air-inlet฀ manifold
onto฀ the฀ surface฀ where฀ the฀ lower฀ part฀ and฀ the฀ upper฀ part฀ of฀ air-inlet
manifold฀are฀connected,฀so฀as฀to฀prevent฀any฀foreign฀material฀from฀entering
air฀inlet฀duct฀prior฀to฀the฀assembly฀of฀upper฀part.
(d)Installation฀of฀thermal฀baffle฀for฀wiring฀harness.
(e)Two฀M6
18฀ bolts with฀flat฀ washer฀and฀light-typespring฀washer
will฀be฀used฀to฀have
the฀thermal฀baffle฀for฀wiring฀harness฀fixed฀onto฀the฀lowerpart฀of฀air-inlet
manifold.
T ightening฀ tor que (7 2)N m
(f)Installation฀of฀the฀upper฀part฀of฀air-inlet฀manifold
-Following฀a฀dismantle฀of฀dust-cover฀from฀the฀lower-part฀of฀air-inlet฀manifold,
connection฀spacers฀shall฀be฀installed฀onto฀a฀plane฀where฀the฀lower฀part฀and
the฀upper฀part฀of฀air-inlet฀ manifold฀are฀ connected,฀and฀shall฀ face฀to฀ six
installation฀holes฀exactly.
-The฀upper฀part฀of฀air-inlet฀manifold฀shall฀be฀installed฀onto฀gaskets฀where฀the
Reinstallation฀/restoration฀of฀cylinder฀head
lower฀part฀and฀the฀upper฀part฀of฀air-inlet฀manifold฀are฀connected,฀and฀have฀six฀installation฀holes฀facing฀exactly฀to฀relevant฀spacers,฀and
to฀six฀holes฀on฀the฀low฀part.
-Six฀M8
30฀hexagonal฀socket฀head฀bolts with฀flat฀washer฀and฀standard฀spring฀washer will฀be฀used฀for฀fixing฀purpose,฀and
shall฀be฀tightened฀as฀per฀the฀sequence฀“from฀the฀middle฀to฀two฀ends”:฀a฀pre-tightening฀may฀be฀made฀using฀a฀pneumatic฀wrench฀before
a฀re-tightening฀to฀specified฀torque฀using฀a฀fixed-torque฀wrench.
Tightening฀ torque (16 3)N m
(g)Installation฀of฀dead฀plate฀and฀the฀manifold฀supporting฀frame
-Using฀two฀M8
16฀bolts with฀flat฀washer฀and฀standard฀spring฀washer ,฀dead฀plate฀may฀be฀installed฀onto฀front฀end฀surface฀at
the฀lower฀/upper฀part฀of฀inlet฀manifold฀to฀link฀the฀lower฀part฀with฀the฀upper฀part.฀T ightening฀torque (16 3)N m
-One฀M8 16฀bolt with฀flat฀washer฀and฀standard฀spring฀washer will฀be฀used฀to฀have฀the฀upper฀part฀of฀manifold฀supporting
frame฀on฀the฀rear฀side฀of฀cylinder฀head฀fixed฀onto฀the฀upper฀part฀of฀inlet฀manifold.฀And฀two฀bolts฀on฀manifold฀supporting฀frame฀may
be฀tightened฀using฀a฀fixed-torque฀wrench.
T ightening฀ tor que (16 3)N m
6.฀Installation฀of฀the฀fuel฀distributor฀assembly
(a)A฀layer฀of฀clean฀machine฀oil฀shall฀be฀applied฀evenly฀to฀the฀external฀edge฀of
sealing฀ringwhere฀four฀fuel฀injectors฀of฀the฀fuel฀distributor฀assemblywill฀be
linked฀with฀the฀air฀inlet฀manifold.
(b)When฀four฀fuel฀injectors฀are฀facing฀exactly฀to฀respective฀installation฀hole฀at
the฀lower฀part฀of฀air-inlet฀manifold,฀and฀when฀one฀side฀having฀fuel฀pressure
adjustor฀is฀towards฀the฀front฀side฀of฀engine,฀press฀and฀install฀four฀fuel฀injectors
to฀the฀lower฀part฀of฀inlet฀manifold.
(c)The฀fuel฀distributor฀assembly฀will฀be฀fixed฀using฀two฀M8
25฀bolts
with฀flat฀washer฀and฀standard฀spring฀washer applied฀to฀the฀lower฀part
of฀inlet฀manifold.
Tightening฀ torque (18 3)N m
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