Chery QQ6 (S21) / S12LHD. Manual — part 231

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.

5. Use an 8# sleeve to remove the four fixing bolts of

oil pump.

Torque: 8+3Nm

6. Take off the oil pump assembly and then the oil pump

shim.

Note:

Do not split the oil pump shim forcibly when

disassembling for fear to cause leak.

7. Use an hexagon wrench to remove the two

connecting bolts of oil pump.

8. Use a screwdriver to pry the crankshaft front oil seal

and then take out the oil seal.

II. Overhaul of Oil Pump

if it is suspected that engine oil pressure may has problem,

disassemble the oil pump and check elastic force of relief

valve spring and if the valve is locked.

Note:

The oil pump is of inner rotor type, which can not

be maintained under normal conditions, because its finish

size and material ensure its reliability.

III. Installation Procedure

The installation order is adverse to that for disassembly,

but care should be taken for the following matters.

1. The installation direction of oil pump relief valve is as

shown in the figure.

2. Completely and softly shovel off the glue on the surface

of oil pan with a flat shovel and then apply new sealant

uniformly (see the table above for type of the sealant).

Note:

As soon as new sealant is applied properly,

assemble at once; otherwise, the sealant may freeze,

which may affect the sealing effect.

Chapter Thirteen Disassembly of Crank-Connecting Rod

Mechanism

I. Disassembly Procedure

1 Use a 13# sleeve to remove the fixing bolt of clutch

cover.

Torque: 23±2 Nm

2. Use the special tool CH-20009 to lock the crankshaft

and then use a 13# sleeve to remove the connecting bolt

of flywheel and crankshaft.

3. Use a 13# sleeve to loosen the fixing bolt of

connecting rod bearing cylinder by cylinder and then

take off the piston and connecting rod assembly.

Note:

After the pistons are taken out of the cylinders,

reset and connect the bearing caps of connecting rod big

end and bolts properly and then put them by order.

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

crankshaft lower bearing cap and cylinder block.