Great Wall engine 4G64S4M. Manual — part 6
11-18
ENGINE
TIMING TOOTHED-BELT
E
F
G
MD998781
6EN0634
6EN0564
6AE0049
6AE0050
6EN0350
TIGHTENING OF CRANKSHAFT BOLT
(1)
Fixup flywheel with special tools;
(2)
Mount crankshaft bolt.
MOUNTING OF OIL PUMP TOOTHED-BELT
WHEEL
(1)
Insert cross point screwdriver into the plug hole on the left
side of cylinder block to prevent balancing shaft from rotating.
(2)
Mount oil pump toothed-belt wheel.
(3)
Smear engine oil on the coupling face of nut and bearing.
(4)
Screw up the nut according to the specified torque.
MOUNTING OF AUTOMATIC TENSIONER
(1)
If the rod of automatic tensioner is extruded, the following
procedures should be taken to retract it.
(2)
Clamp automatic tensioner with a soft jaw plier.
Notes:
Because there is screw-plug outshot at the bottom of auto-
matic tensioner, a flat bearing plate should be inserted
between the plier and the screw-plug to avoid them from
direct contacting.
(3)
Use a plier to push it in slowly until hole
on the rod and
hole
on the oil cylinder is aligned.
(4)
Insert steel wire (diameter is 1.4mm) into the aligned holes.
(5)
Disassemble the automatic tensioner with a plier.
(6)
Mount the automatic tensioner onto the front cover, then
screw up the bolt according to the specified torque.
Notes:
Left the steel wire inside the automatic tensioner.
A
B
11-19
ENGINE
TIMING TOOTHED-BELT
MOUNTING OF TIMING TOOTHED-BELT
(1)
Confirm the timing toothed-belt tensioner is properly mounted.
(2)
Align the timing mark on the camshaft toothed-belt wheel with
the mark on the cylinder head.
(3)
Align the timing mark on the crankshaft toothed-belt wheel with
the mark on the front cover.
(4)
Align the timing mark on the oil pump toothed-belt wheel with
its accordant mark.
(5)
Disassemble plug from cylinder block, then insert cross point
screwdriver (diameter: 8mm) into the hole. Going over 60mm
inwards means the timing mark is aligned; incase of failure to go
more than 20~25 inwards, you should turn the oil pump toothed-
belt wheel 180
(6)
Connect timing toothed-belt to crankshaft pulley, central pulley,
camshaft toothed-belt wheel and tensioner pulley in turn.
(7)
Uplift the tensioner pulley in the arrow direction, then screw
down the central bolt.
H
timing mark
6EN0673
timing mark
timing mark on oil pump gear
6EN0671
6EN0672
6EN0663
6EN0748
tensionere pulley
11-20
ENGINE
TIMING TOOTHED-BELT
(8)
Verify that all timing marks are in a line.
(9)
Remove the screwdriver inserted at step (5) and mount the plug.
(10) Turn camshaft 1/4 circle counter-clockwise, then turn it clock-
wise until all timing marks come into line again.
(11) Assemble the special tools socket wrench and torque wrench
onto the tensioner pulley, then screw down the central bolt of
tensioner pulley.
Notes:
If special tools are unavailable, an ordinary torque wrench
capable of measuring the torque of 0~0.3 kg may be used.
(12) Use the torque wrench to screw down to a torque of 0.26~0.27
kg.m.
(13) While holding the tensioner pulley with special tools and torque
wrench, screw down the central bolt till the standard value is
reached.
(14) Place the crankshaft for about 15 minutes after turning it 2
circles clock-wise. Then check if the fixing steel wire of auto-
matic tensioner can glide freely.
Notes:
In case the steel wire can not glide freely, repeat the above
steps before step (10) till the steel wire can glide.
(15) Take off the fixing steel wire of the automatic tensioner.
(16) Measure the distance
A (between tensioner arm and auto-
matic tensioner body).
Standard value
3.8 4.5mm
MD998767
MD990685
6EN0749
6EN0750
fixing sttel wire
6EN0751
11-21
FUEL SYSTEM
DISASSEMBLY AND MOUNTING
Disassembly Procedure
1.
water pipe
2.
water pipe
3.
throttle body
4.
cushion
5.
cover
6.
cushion
7.
fuel cistribution pipe assembly
20N.m
5
6
4
12N.m
ENGINE
FUEL OIL SYSTEM
Notes for Mounting
Mounting of Fuel Distribution Assembly
Before mounting fuel distribution assembly, carefully
lubricate the matching face of the manifold or the O-
ring with mineral lubricating oil, align the center lines
of the injector and the mounting hole, then insert the
intake manifold. Finally, screw down the bolt accord-
ing to the specified tightening torque.
(1)
Mineral lubricating oil: ISO 10 (10 cSt at 40
)
(2)
Prevent lubricant from entering into the injector
while using lubricant.
A
7
2
1
3
19N.m
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