Chery Fora (Elara A520). Manual — part 164

CHERY A21 SERVICE MANUAL

MECHANISM OF 2.0NALC ENGINE

29

2 Replace the engine oil strainer

2.1

Needed tools and auxiliary materials

10# open end wrench, 10#, 15#, 17# sleeve,
ratchet wheel and ratchet rod, Le Tai 5901
Glue, engine oil

2.2

Process of replacement

2.2.1

Process of removal

1)

Remove the oil pan.（See “replace oil
pan” for details）

2)

Remove the connecting bolt between
engine oil strainer and frame with 10#
sleeve wrench.（total 8 bars）

3)

Draw out the engine oil strainer
carefully.

2.2.2

Installation

1)

Spin the nozzle of engine oil strainer
into the frame carefully.

2)

Mount the 8 bolts for the strainer and
fasten them.

Note: the bolts should be mounted with Le
Tai 243 glue.

Torque: 8±3Nm

3)

Install oil pan (See “installation of oil
pan” for details).

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3

Replace the piston, piston ring, piston
pin and connecting rod bearing

3.1

Needed tools and auxiliary materials

10# open end wrench, 10#, 15#, 17# sleeve,
ratchet wheel and ratchet rod, Le Tai 5901
Glue, engine oil, torque wrench Special tools
for installing piston, feeler gauge, clearance
gauge, micrometer caliper

3.2

Process of replacement

3.2.1

Process of removal

1)

Dismantle

the

timing

belt

(see

“dismantle the timing belt” in the
section of “replacement of engine
timing belt” for details).

2)

Remove the oil pan（see REPLACE OIL
PAN for details.

3)

Remove

the

cylinder

head.

(see

“removal of cylinder head” for details).

4)

Dismantle the engine oil strainer (see
the “replacement of engine oil strainer”
for details).

5)

Loosen the big bolt on connecting rod.

6)

Remove the connecting rod bearing
lower cover.

Connecting Rod

Bearing Lower Cap

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7)

Uplift the connecting rod and the piston
with a wooden stem and then remove
the connecting rod and piston assembly.

8)

Remove the piston ring.

9)

Remove the retainer ring of piston pin
and draw out the piston pin.

Note: With large tension, the retainer ring
may hurt people in the process of removal.

3.2.2 Inspection

I.

Check piston

1) Examine the diameter of piston.

Measure the diameter along the vertical
direction to piston pin and at the place 11mm
under piston skirt with micrometer caliper.

Cylinder No.

Standard Size

1

83.46±0.009

2

83.46±0.009

3

83.46±0.009

4

83.46±0.009

Replace with the new one if the part cannot
be worn and torn any longer.

Retainer Ring

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2)

Examine the clearance between piston
ring and ring groove.

a.

Clean up the accumulated carbon in the
ring groove with piston ring.

b.

Examine the clearance between piston
ring and ring groove with feeler gauge.

Reference Value（mm）

1

st

Ring

0.04--0.08

2

nd

Ring

0.01--0.025

Replace with the new one if the examined
clearance cannot be worn and torn any
longer.

3)

Inspect the end clearance of piston ring.

a.

Put the piston ring at the position 45mm
below the top surface of cylinder
aperture and push the piston ring into
cylinder with piston.

b.

Measure the opening with feeler gauge.

Replace with the new piston if the examined
clearance exceeds the limit.