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