Chery S11 / Chery QQ. Manual — part 219

SQR7080 Maintenance Manual 372 Engine Mechanical System

19

(3) Put SST on the valve thrusting rod from inside of
cylinder head,pay attention noy to press the adjusting
gasket,shown as the illustration.

(4) Turn the crankshaft to make the top of the cam
vertically upwards. Use special tools to press down the
valve thrusting rod and hold it in the place firmly.

(5) Use a screwdriver to stir up the separation cushion,
and use magnet bar to remove the separation cushion
from inside.

(6) Turn the crankshaft to make the cam top facing
downward. Press down the valve and use special tools to
remove it.

(7) Turn the crankshaft for 2—3 circles, then confirm
the throttle spacing. If it fails to be within the benchmark
value limits, check and adjust the throttle spacing in the
operational procedures described in (1)—(9).

SST

SST

SST

4. Cylinder head
4-1 Configuration diagram (Do the following operations in the procedures for the dismounting and
installation of the camshaft)

SQR7080 Maintenance Manual 372 Engine Mechanical System

（

1） Spark plug20±1Nm

（

2） Cylinder head

（

3） Weather sealI

（

4） Cylinder head gasket

（

5） Adjust shim

（

6） Valve lifter

（

7） Keeper

（

8） Valve spring seat

（

9） Valve spring

（

10） Iintake valve

（

11） Exhaust valve

（

12） Valve oil seal

（

13） Valve seat

（

14） Valve guide

※：

Non-reusable part

Unit：N·m(kg·cm)

4-2 Dismounting
1、Removal of spark plug

20

SQR7080 Maintenance Manual 372 Engine Mechanical System

21

2 There are 8 cylinder cover bolts. In the process of
removing the cylinder, please follow the sequences shown
as the right illustration, loosen the bolts one by one
evenly and gently.

3 Removal of the cylinder dustproof sealing and cylinder
cover base.
[Attention] The cylinder cushion can not be used
repeatedly.
4 Removal of throttle adjusting separation cushion and
valve thrusting rod
5 Use special tools to remove the valve spring locking
block, throttle spring stand,valve spring, IN valve and EX
valve


6 Removal of valve oil seal and valve spring washer

4-3 Clearing
1 The accumulated carbon residue covered on the valve
must be cleared.
2 Use scraper to clear the cylinder cover, the air inlet

and exhaust branching pipe surfaces and bottoms

[Attention]
Do not damage the cylinder cover surface by scraping
during the process of clearing.
Do not drop filth into the air inlet and the water channel.

4-4 Routine checks
4-4-1 Cylinder cover
1 Use the straight knife sharp edge ruler to measure the
levelness at various points as shown in the figure.

Cylinder cover 0.10mm
Air inlet branching pipe surface 0.10 mm

SST

SQR7080 Maintenance Manual 372 Engine Mechanical System

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2 Use a square ruler to measure the right angle of the
valve spring. Replace the spring if it fails to meet the
specifications.
[Limit] 1.2mm

3 Measure the free state of spring
[Benchmark value] 37mm

4-4-3 Throttle
Routine checks on throttles
1. Check to see if there are some deformations, obvious
tears and wears
Routine check list on valve Unit:mm

Item Standard

Limit

IN

0.85～1.41 ___

Wide

E

X

1.07～1.36 ___

IN

1.0±0.2 0.75

Width of valve top

E

X

1.0±0.2 0.75

(2)

Checks on the clearance between the throttle guiding

pipe and throttle thrusting rod
1 Use a dial gauge to measure the inner diameter of the
throttle guiding pipe, and use a caliper to measure the
outer diameter.

Measure outside
diameter

Width

Measure point