Chery Fora (Elara A520). Manual — part 49

55

7.3 Check

1)

Check the oil clearance of crankshaft
main journal.

a)

Clean the journal and bearing bushing.

b)

Installation of crankshaft

c)

Cut the plastic gauge to make it have the
same length with that of the bearing, and
then put it onto the crankshaft journal to
make it parallel with the central line of
shaft.

d)

Install the master bearing cap carefully,
and fasten the bolts to specified torque.

e)

Dismantle the master bearing cap
carefully.

f)

Use the measuring rule on the packaging
bag of plastic gauge to measure the
width of the widest portion of flattened
plastic wire, and get the clearance value.

Standard value

Limit
value

Clearance

0.022

0.058

If the clearance value exceeds the limit value,
please replace the bearing bushing.

Note: When replacing the bearing bushing,
you must replace the whole group of bearing
bushings.

2)

Measure

the

axial

clearance

of

crankshaft

After

mounting

the

crankshaft, you can use micrometer
guage to measure the axial clearance.

Standard value

Limit
value

Clearance

0.07

0.265

If the measured value exceeds the limit value,
please replace the thrust washer.

Plastic Gauge

56

7.4 Installation

1)

Clean up the short engine, and apply
engine lubricant.

2)

Install the crankshaft correctly, and
mount the thrust washer in proper
position.

3)

Latch on the cylinder block frame, and
fasten the crankshaft fixed bolts.

The fastening sequence is illustrated in the
figure.

Torque:

4)

Mount the bolts onto the frame
periphery, and fasten them.

Torque:

5)

Mount oil strainer, oil pan, front and
rear oil seals of crankshaft and oil pump.

6)

Mount engine accessories, lift and
install the engine onto the car, mount
water pipe, and insert all electrical
plugs.

CHERY A21 SERVICE MANUAL

MECHANISM OF 2.0NALC ENGINE

1

MECHANISM OF 2.0NA ENGINE

CONTENT

CHAPTER 1 ENGINE PARAMETER AND SPECIAL MAINTENANCE TOOLS . . 2

SECTION 1 TECHNOLOGY DATA INSTRUCTION . . . . . . . . . . . . ... 2

SECTION 2 SPECIAL TOOLS . . . . . . . . . . . . . . . . . . . . . ... 6

SECTION 3 ENGINE NUMBER POSITION . . . . . . . . . . . . . . . . 7

SECTION 4 COLLATING METHOD OF ENGINE TIMING . . . . . . . . . ... 8

CHAPTER 2 ENGINE BODY

. . . . . . . . . . . . . . . . . . . . . . ... 10

SECTION 1 WHEEL TRAIN . . . . . . . . . . . . . . . . . . . . . . 10

SECTION 2 CYLINDER HEAD . . . . . . . . . . . . . . . . . . . . .. 15

SECTION 3 SHORT ENGINE . . . . . . . . . . . . . . . . . . . . . .. 29

CHERY A21 SERVICE MANUAL

MECHANISM OF 2.0NALC ENGINE

2

CHAPTER 1 ENGINE PARAMETER AND SPECIAL MAINTENANCE TOOLS

SECTION 1 TECHNOLOGY DATA INSTRUCTION

ENGINE CHARACTER

Engine Model

SQR481H

Engine Type

4-Cylinder, Water Cooled, In-line Double

Overhead Camshaft, 16 Valve,

Controllable Burning Rate, Variable Valve

Timing

Cylinder Diameter

（mm）

83.5

Piston Stroke (mm)

90

Displacement (L)

1.971

Compression Ratio

10

Rated Power

（Kw）

95

Rev at Rated Power

（r/min）

5500

Max. Torque

（N●M）

180

Rev at Max. Torque

（r/mim）

4000

Minimum Fuel Consumption Rate

（g/Kw.h）

301

Cylinder Pressure

（Bar）

10±0.2

Fuel Pressure

（Bar）

4

Engine Oil

Pressure

（Bar）

Low Idle Speed

（800±50r/min）

High Idle Speed

（2000r/min）

High Speed

（4000r/min）

A/C Circuit

Pressure

（Bar）

High Pressure Circuit

2--3

Low Pressure Circuit

12---16