Chery Fora (Elara A520). Manual — part 138

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Loosen the connecting rod bolt, dismantle the
bearing cap; and use the measuring rule on
the clearance gauge packaging bag to
measure the width of the widest portion of
the flattened clearance gauge, and get the
clearance value.

If the measured clearance exceeds limit, you
should replace the connecting rod bearing.

Note: When replacing bearing bushing, you
should use the specified brand and model of
the same manufacturer.

Standard value

Wearing

limit

clearance

0.15

0.50

6)

Check the flatness of the cylinder block
surface.

a:

Clean the cylinder block surface.

b:

Use ruler and feeler gauge to check
whether the cylinder block surface is
warped or not.

C:

If the warping amount is excessive,
please rectify it.

If it exceeds the limit, please replace the
cylinder block.

The maximum summation of the permitted
worn thickness of the cylinder block and
cylinder head is:

Standard value

Limit

value

warping

amount

0.04

Plastic Gauge

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7)

Check the cylinder block

a:

Check whether there is scuffing or piston
scraping on the cylinder wall. If the
defect exits, please dissection the
cylinder or and set with bushing or
replace it.

b:

Use cylinder gauge to measure the inner
diameter and cylindericity.

Standard value

Limit
value

Cylindericity

Cylindericity=max. cylinder diameter-min.
cylinder diameter.

Measure the cylinder diameter in the A and B
directions, and calculate the cylindericity in
the two directions and select the max value.

3.2.3 Installation

1)

Apply oil onto the piston pin and in the
piston pin hole, and use piston pin to
connect the piston with the connecting
rod, and then mount the piston pin
circlip.

2)

Mount piston ring. Mount all the rings
onto the piston according to the
sequence: the bushing ring of oil control
ring upper and lower blades, second air
ring, first air ring. Observe the piston
ring direction when mounting various
rings: those with “TOP” onto it shall be
positioned upwards. Form an angle by
crossing the two blades and the bushing
ring, with the closed angle at the
bushing ring joint pointing at the piston
top, and the first ring and second ring
intersecting with the blades for 1200.

12 mm

Center

Bottom

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3)

Mount the connecting rod upper bearing
and connecting rod together.

Note: The bearing notch should be in
alignment with the notch on the connecting
rod.

4)

Apply engine lubricant onto the engine
cylinder, use special tools to clamp the
piston ring, and use wood handle to
slightly knock on the piston head so as
to mount the piston connecting rod
assembly.

Note: The end of the connecting rod with
points should point at the 1st engine cylinder,
and be consistent with the direction of arrow
at the piston top surface.

5)

Mount the connecting rod lower bearing
and connecting rod cap together, and
apply engine lubricant onto the bearing.

Note: The bearing notch should be in
alignment with the connecting rod notch.

6)

Latch on the connecting rod cap and
fasten the bolt.

Torque: 25±3N•m, and then screw it for 90
°±5°.

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7)

Check the axial clearance of connecting
rod Use micrometer caliper or feeler
gauge to measure the axial clearance.

8)

Mount oil strainer.

9)

Mount oil pan.

10)

Mount cylinder.

11)

Mount timing belt.

4.Replacement of Front crankshaft oil seal

4.1

Needed tools and auxiliary materials

Ratchet wheel, ratchet rod, 13#, 15#, 17#,
22# sleeves, 13#open end wrench, allen
wrench, engine lubricant, special tools for
assembly oil seal.

4.2

Process of replacement

4.2.1

Process of removal

1)

Dismantle the timing belt (detailed
Process of removals are shown in the
“replacement of timing belt”).

Standard

value（mm）

Limit value

(mm)

Clearance

0.15

0.50

2)

Shift the car into the 5th gear and step
on the brake, use torque wrench to
dismantle the bolts connecting the
timing belt pulley and crankshaft, and
then take down the timing belt pulley.

Torque: 130±10, and then screw for 65°±5°.