Chery SQR 7160 sedan. Manual — part 27

CAC Gasoline Engine Maintenance And Servicing Manual

26

2.Cylinder cover bolts removal and cylinder head assembly installation

Cylinder head bolts removal：
——Rotate camshaft until keyway is rightly upside.
——Loosen cylinder cover bolts in order as specified in
diagram.
——Note：Cylinder cover bolts must be replaced after
removed and are not permitted to reuse.


Cylinder head assembly reinstallation：

——Check whether cylinder head contact surface
roughness is 0.15mm or less.





——Clean the tapped holes in cylinder block，there should
not be deposits in tapped hole，or fluid pressure resulting

from bolts screwing may possibly results in cylinder block
cracking.
——Rotate crankshaft until no.1 cylinder piston is 20mm
or so under the deck of cylinder block to keep the valves in
cylinder head assembly from contacting piston head.



——Match cylinder head gasket with dowels.
Note：

For cylinder head gasket mark, 2 tooth indicates 478，

1 teeth indicates 480 ,and position cylinder head gasket
with part number side upside.

——Install cylinder head into place with camshaft keyway
perpendicularly downward.
Note：Cylinder head gasket may only be used once ，gasket
should be replaced if cylinder head is removed.

A dowel B cylinder head

gasket

Fig.23

Fig.22

Fig.20

Fig.21

PDF 文件使用 "pdfFactory Pro" 试用版本创建

www.fineprint.com.cn

CAC Gasoline Engine Maintenance And Servicing Manual

27

——Install new cylinder head bolts and washers into bolt
holes, screw in by hand.








——Tighten cylinder head bolts in four steps in the order

as diagram specified.
Step 1：Tighten to 20—40Nm
Step 2：Tighten to 40—60Nm
Step 3：Rotate 90°
Step 4：Rotate 90°
During rotating, torque- angle torque wrench or
line plotting methods may be applied.

3.Rocker arm mechanism and hydraulic lifting rod removal and installation

Rocker arm mechanism：
removal：
——Loosen rocker arm nuts，remove nuts.
——Remove rocker arm supports.
——Remove rocker arms.
——Remove rocker arm support shims.
——Put each group of rocker arm and rocker arm
support into the same plastic bag for reference，rocker
arm nuts are not permitted to reused after removed.

Fig.24

Fig.25

Fig.26

Fig.27

PDF 文件使用 "pdfFactory Pro" 试用版本创建

www.fineprint.com.cn

CAC Gasoline Engine Maintenance And Servicing Manual

28

Installation：
——Check rocker arm contact surface for abnormal wear，
replace rocker arm if necessary.
——Pull rocker arm support washers onto rocker arm
double end studs.
——Lubricate rocker arms and rocker arm supports with
engine oil.
——Install rocker arm, rocker arm support，then finger
screw in new nut， tighten to 25—29Nm.

Note：Before installing each rocker arm and tightening
nut， appropriate hydraulic lifting rod should be at the

lowest position.

Hydraulic lifting rod：
——Removal：
——Remove hydraulic lifting rods ,in order, and put them
into container filled with oil preventing them from
leaking.
——Check both hydraulic end contact face for abnormal
wear or scratch，
If needed, replace hydraulic lifting rod.

Fig.28

Fig. 29

Fig.30

PDF 文件使用 "pdfFactory Pro" 试用版本创建

www.fineprint.com.cn

CAC Gasoline Engine Maintenance And Servicing Manual

29

Hydraulic lifting rod installation：
——Hydraulic lifting rod size：

——Apply hyperbolical gear lubricant or engine oil on lifting rod,
lifting rod outside diameter and lifting rod ends, install lifting rods
in original order into the holes in the cylinder head.

4.Camshaft and camshaft thrust spacer removal and installation

Removal：
——Measure camshaft end play，clearance should be
0.049—0.129mm.
——Loosen thrust washer bolt，remove thrust washer
bolt(as shown in diagram).
——Remove thrust washer.
——Pull camshaft assembly out from the rear end of
cylinder head，don't damage the camshaft hole in
Cylinder head.

Inspection：
——Check camshaft cam and journal for wear，if worn
out, replace it.
——If camshaft end play exceeds specification, replace
thrust washer.
——Measure the diameter of the camshaft hole in
cylinder head ，or check journal to hole movement with
camshaft，if hole is worn excessively, camshaft may only
be replaced.
——Cam height：

Grade

Lifting rod

outside diameter

Cylinder head

lifting rod hole

diameter

clearance

Standard

Φ22.200—Φ22.212

Φ22.25±0.015

0.023—0.065

T25

Φ22.454—Φ22.466

Φ22.50±0.015

0.023—0.065

Intake cam

T

Exhaust cam

T

478

38.305

37.289

480

38.602

37.586

478E

38.305

37.289

480E

37.559

37.559

Fig.31

Fig.32

Fig.33

Unit：Mm

Fig.34

Note：480 camshaft may only be used on 480M.

PDF 文件使用 "pdfFactory Pro" 试用版本创建

www.fineprint.com.cn