Chery A15. Manual — part 136

Valve Stem Size And Fit Clearance

Intake valve (unit: mm)

Exhaust valve (unit: mm)

Class

Diameter of

valve stem

Inner

Diameter of

valve guide

Clearance

Diameter of

valve stem

Inner

Diameter of

valve guide

Clearance

Standard

8.043

0

018

.

0

+

−

8.063~8.09

4

8.017

0

018

.

0

+

−

8.063~8.094

Oversized

by 0.4

8.443

0

018

.

0

+

−

8.463~8.49

4

0.02

~

0.069

8.417

0

018

.

0

+

−

8.463~8.494

0.046

~

0.095

Size of Intake Valve Seat Ring And Cylinder Head Seat Ring Bore

Class

Diameter of intake valve

seat ring (unit: mm)

Diameter of the seat ring

bore of cylinder head

(unit: mm)

Interference

(mm)

480 engine

43.877

01

.

0

01

.

0

+

−

43.763

025

.

0

0

+

Oversized by 0.5

44.377

01

.

0

01

.

0

+

−

44.263

025

.

0

0

+

Oversized by 1.0

44.877

01

.

0

01

.

0

+

−

44.763

025

.

0

0

+

0.079~

0.124

Size of Exhaust Valve Seat Ring And Cylinder Head Seat Ring Bore

Class

Diameter of exhaust

valve seat ring

(mm)

Diameter of cylinder

head seat ring bore

(mm)

Interference

(mm)

480 and others

38.877

01

.

0

01

.

0

+

−

38.263

025

.

0

0

+

Oversized by 0.5

39.377

01

.

0

01

.

0

+

−

38.763

025

.

0

0

+

Oversized by 1.0

39.877

01

.

0

01

.

0

+

−

39.263

025

.

0

0

+

0.079~0.124

UAES’s new two-valve

38.377

01

.

0

01

.

0

+

−

38.263

025

.

0

0

+

Oversized by 0.5

38.877

01

.

0

01

.

0

+

−

38.763

025

.

0

0

+

Oversized by 1.0

39.377

01

.

0

01

.

0

+

−

39.263

025

.

0

0

+

0.079~0.124

TD-4

Size of Valve Guide And Valve Guide Bore

Class

Valve guide bore

(unit: mm)

Diameter of cylinder head

guide hole (unit: mm)

Interference

(unit: mm)

Standard

13.555

0

01

.

0

−

13.481—13.519

Oversized

14.305

0

01

.

0

−

14.231—14.269

Oversized

14.505

0

01

.

0

−

14.481—14.519

0.026—0.07

Size of Cylinder Bore

480 M cylinder bore (unit: mm)

480 E cylinder bore (unit: mm)

1 79.94-79.95 1 79.94-79.95

2 79.95-79.96 2 79.95-79.96

3 79.96-79.97 3 79.96-79.97

Ex-factory

grouping

4 79.97-79.98 4 79.97-79.98

A 80.23-80.24 A 80.23-80.24

B 80.24-80.25 B 80.24-80.25

Ex-factory repair

C 80.25-80.26 C 80.25-80.26

Standard 79.965-77.975

Standard 79.965-77.975

Oversized by

0.29

80.245-80.255

Oversized by

0.29

80.245-80.255

For

Maintenance

Oversized by 0.5

80.466-80.475

Oversized by 0.5

80.466-80.475

TD-5

The Diameter of Piston Skirt

Diameter of 480M piston skirt

(unit: mm)

Diameter of 480E

piston skirt (unit:

mm)

Diameter of UMC’s

new two-valve piston

skirt (unit: mm)

1 79.91-79.92

79.915-79.925

79.915-79.925

2 79.92-79.93

79.925-79.935

79.925-79.935

3 79.93-79.94

79.935-79.94

79.935-79.94

Ex-factory

grouping

4 79.94-79.95

79.945-79.955

79.945-79.955

A 80.20-80.21

80.205-80.215

80.205-80.215

B 80.21-80.22

80.215-80.225

80.215-80.225

Ex-factory

repair

C 80.22-80.23

80.225-80.235

80.225-80.235

Standard 79.93-79.955

79.965-79.975

Oversized by

0.29

80.21-80.235 80.245-80.255

Spare parts

Oversized by

0.5

80.43-80.455 80.465-80.475 80.435-80.455

The Diameter of Piston Pin Bore

Diameter of 480M piston pin bore (unit: mm)

Diameter of 480E piston pin bore (unit: mm)

White 20.630-20.633 White 20.630-20.633

Red 20.633-20.636 Red 20.633-20.636

Blue 20.636-20.639 Blue 20.636-20.639

TD-6

The Diameter of The Piston Pin

Diameter of 480M piston pin bore (unit: mm)

Diameter of 480E piston pin bore (unit: mm)

White 20.622-20.625

White 20.622-20.625

Red 20.625-20.628

Red 20.625-20.628

Blue 20.628-20.631

Blue 20.628-20.631

The End Clearance of The Piston Ring

First compression ring: 0.30-0.50mm
Second compression ring: 0.30-0.50mm
Oil ring: 0.40-1.40mm

The Axial Clearance of Piston Ring In The Piston Groove

Height of the piston

ring (unit: mm)

Size of piston ring
groove (unit: mm)

Fit clearance

(unit: mm)

First compression ring

1.60 1.6

0.050-0.082

Second compression ring

2.0 2.0

0.050-0.082

0.61±0.025

Sealing strip of oil ring

Spring of oil ring

2.68±0.05

4.0

0.01-0.23

Cast iron oil ring

4.0 4.0

0.025-0.055

0
-0.012

+0.06
+0.04

0
-0.012

+0.06
+0.04

+0.03
+0.01

-0.015
-0.025

+0.03
+0.01

480 UAES’s New Two-Valve

Height of the piston ring (unit:

mm)

Size of piston ring groove

(unit: mm)

First compression ring

1.2（-0.03～-0.01） 1.2（0.03～0.05）

Second compression ring

1.5（-0.03～-0.01） 1.5（0.02～0.04）

0.46±0.02

Sealing strip of oil ring

Spring of oil ring

2.75±0.05

2.0±0.02

3（0.01～0.03）

TD-7