Chery QQ6 (S21) / S12LHD. Manual — part 94

2.3.4 Detection of planeness of cylinder head

Follow the method as shown in the figure to

measure planeness of the cylinder head with a feeler

gauge; the planeness of the cylinder should not

exceed 0.05-0.10mm, if exceeding this valve,

replace the cylinder head assembly.

III. Assembly of Cylinder Head Assembly

1. Please follow the order adverse to that for

disassembly of cylinder head to install, but care

should be taken for the following matters during

installation.

2. Use the special tool CH-20012 to install new

valve oil seal onto the guide first.

3. Insert big end of the guide onto the valve guide.

4. Envelope the special tool onto CH-20012, and

then softly and forcibly compact.

5. Use a hammer to knock the valve oil seal

installation tool, when a metal crash sound is heard,

take out CH-20012.

6. The methods for installation and assembly of

valve spring are the same. Then install valve, spring,

keeper, top barrel and rocker arm. (when installing

the top barrel, add a little engine oil into the hole).

7. Install camshaft and camshaft bearing shell cover

assembly.

Note:

When installing, remember to differentiate intake

camshaft from exhaust cam. The intake camshaft has a

gear at tail, and pay attention to the diacritical marks on

camshaft bearing shell covers.

8. Installation of camshaft and oil seal

8.1 After adding engine oil on the camshaft bearing

shell, place intake and exhaust camshafts, cover

bearing shell covers properly, install the fixing bolts

for the bearing shell covers, and then use a 10mm

sleeve to hold down the bearing shell covers step by

step (the two bolts on the one and the same bearing

shell cover should be tightened at the same time).

Torque: 8.5±1.5 Nm.

9. Remember to apply sealant to the position as

shown in the figure when installing the first bearing

shell.

10. Tightening order of camshaft bearing shell

cover.

Tighten the camshaft bearing shell cover as shown

in the figure.

Installation of camshaft oil seal:

Apply a little engine oil on the camshaft oil seal,

envelop the oil seal onto the camshaft, and then

install use the special tool.

11. Remember to check elasticity of valve cover

gasket for aging and breakdown, if any, replace with

new one. When installing, pay attention to

installation position.

12. Tighten the valve cover bolt.

Chapter Twelve Disassembly and Installation of Oil Pump and

Lubrication System

I. Disassembly Procedure

1. Roll over the engine and use a 10# sleeve to remove

the fixing bolt of oil pan.

Torque: 15+3 Nm

2. Use a screwdriver to pry out the oil pan at the given

position for prying out on the oil pan.

Note:

Because the oil pan and cylinder block are sealed

with glue, so, do not knock with such hard articles as

hammer etc. when disassembling, use a rubber hammer to

slowly strike at left and right instead.

3. Use a 10# sleeve to remove the fixing bolt of engine

oil strainer.

4. Use an 8# sleeve to remove the fixing bolt of engine

oil guard board.