Engine 2.0 (Chery Fora, A21). Manual — part 2

CHERY A21 SERVICE MANUAL

MECHANISM OF 2.0NALC ENGINE

5

Outer Diameter

Pressure Height

16±0.3

Protruding Part of Valve Stem

47.5

Piston Piston

Skirt

Diameter

83.46±0.009

Piston

Ring

Side Clearance

1

st

Ring

0.04--0.08

2

nd

Ring

0.01--0.025

End Play

1

st

Ring

0.2--0.4

2

nd

Ring

0.4--0.6

Height

1

st

Ring

2

nd

Ring

Oil Ring

Ring

Groove

Height/ Depth

1

st

Ring

2

nd

Ring

Oil Ring

2.5

Piston Pin

Diameter

Length 60

Diameter of Piston Pin Hole

Crankshaft

Axial Clearance

0.076--0.265

Radical Clearance

-0.0375

Crankshaft Mainshaft Diameter

Coaxial Degree

0.05

Cylindricity 0.008

Roundness

0.005

Connecting Rod Journal Diameter

Cylindricity

Roundness

Cylinder

Whole Height

218±0.05

Cylinder Hole Roundness / Straightness Accuracy

0.008 / 0.01

Upper Surface Planeness

0.04

Connectin

g Rod

Radial Clearance of Connecting Rod Bearing

0.016--0.051

Axial Clearance of Big End

0.15--0.4

11

051

.

0

040

.

0

+
+

2

.

1

05

.

0

03

.

0

+
+

5

.

1

04

.

0

02

.

0

+
+

5

.

2

03

.

0

01

.

0

+
+

21

0

005

.

0

−

21

008

.

0

002

.

0

2

.

1

01

.

0

03

.

0

−
−

5

.

1

005

.

0

030

.

0

−
−

CHERY A21 SERVICE MANUAL

MECHANISM OF 2.0NALC ENGINE

6

SECTION 2 SPECIAL TOOLS

Camshaft Timing Tool

Crankshaft Timing Tool

Flywheel Tool

Guide Sleeve of Crankshaft Oil

Seal

Guide Sleeve of Camshaft Oil

Seal

Hydraulic Hoist

CHERY A21 SERVICE MANUAL

MECHANISM OF 2.0NALC ENGINE

7

Fuel Pressure Gauge

Cylinder Pressure Gauge: when measure the cylinder
pressure, firstly remove the spark plug, screw the pipe
end of instrument instead of it, and operate the engine by
starter, then take the maximum value in cylinder pressure
gauge as cylinder pressure.

SECTION 3 ENGINE NUMBER POSITION

Position of Engine Cylinder Block Number

Engine Oil Dipstick

CHERY A21 SERVICE MANUAL

MECHANISM OF 2.0NALC ENGINE

8

SECTION 4 COLLATING METHOD OF ENGINE TIMING

1. Remove the upper cover of engine timing

belt.

2. Remove the lower cover of engine timing

belt.

3. Loosen the central bolt of timing belt

tension pulley and remove the timing
belt.

4. Draw out the high voltage ignition cable.