Chery QQ6 (S21) / S12LHD. Manual — part 90

1.10 Use a 10# sleeve to loosen the fixing bolt of the

tension pulley to take off the timing belt.

Torque: 27±3 Nm.

Note:

when taking off the timing belt, pay

attention to running direction of the belt

and refer to running direction of the engine

crankshaft and the arrowhead direction on

the belt.

II. Installation of Timing Belt

1. Loosen the fixing bolt of tension pulley and turn the

tension pulley to minimum tension position.

2. Install the belt.

3. Use a 5mm hexagon wrench to turn the tension

pulley, when it turns to a position that the hexagon

wrench and the fixing bolt are roughly on the same

horizontal line, stop and tighten the fixing bolt.

4. Install timing lower cover.

5. Install crankshaft pulley.

6. Install relevant accessories and check deflection of

the belt.

7. Install timing upper cover.

8. The installed timing belt is as shown in the figure.

Note:

During the disassembly process, be

sure not to turn crankshaft/camshaft;

otherwise, ignition timing will need

re-check.

III. Adjustment of Timing (general overhaul)

1. Turn the crankshaft to make the four pistons align on a horizontal line in the cylinders, screw

the special tool into the crankshaft timing adjusting hole at left rear of the cylinder (last segment

of the crankshaft), and then make the crankshaft unable to turn left and right (the bolt of the

special tool must enter into the screw hole plane of the cylinder).

2. After intake and exhaust camshaft is installed properly, install the camshaft timing gear, turn the

groove at tail of intake and exhaust camshaft to horizontal direction, and then insert the special

tool into the groove and fix.

3. After crankshaft and camshaft have been fixed according to requirements, install timing belt. In

order to facilitate installation of timing belt, temporarily do not tighten the bolt fixing the timing

gear onto camshaft and let it rotate freely, then fix the timing gear bolt after the tensioner pulley

has fastened the timing belt to the specified value. After that, install other parts.

IV. Adjustment of Timing (minor overhaul)

Replace valve spring, grind valve and replace camshaft (do not raise the engine).

1. Remove the valve cover.

2. Remove the timing gear cover. Turn the timing gear.

3. Let the groove at tail of intake and exhaust camshaft on a horizontal line, then insert the

projecting portion of the special tool into the groove and fix.

4. Turn the crankshaft, screw the special tool into the crankshaft timing adjusting hole at left rear

of the cylinder (last segment of the crankshaft), and then make the crankshaft unable to turn

left and right (if the cylinder head is removed, it can be found that the pistons of the four

cylinders now align at a horizontal position).

5. Install timing belt and make tightness of the belt conform to requirements.

6. Fasten the fixing bolt of timing gear.

7. Install other accessories, such as timing cover and belt pulley etc.

Special tool for camshaft timing check Special tool for crankshaft timing check

(CH-20010)

(CH-20003)

Chapter Nine Disassembly of Engine Assembly

I. Disassembly Procedure

1. Disassembly of engine wire harness

1.1 Pull out the connecting plug of engine wire harness.

1.2 Use a 10# sleeve to loosen the fixing bolt of engine

ground.

2. Use a 10# sleeve to remove the fixing bolt and bearer

of battery.

Note:

Please use regular equipment, especially for such

equipment as crane etc., so as to avoid occurrence of accident.

Before any disassembly job, disassemble cathode of battery

first, so as to protect safety of electricity consumption equipment.

When disassembling engine suspension, pay attention to

disassembly order, so as to avoid occurrence of accident.

3. Use a 13# sleeve to remove the bolt of battery support

fixed mount.

4. Disassembly of cooling system.

4.1 Hoist the vehicle, place away a coolant collector,

unscrew bleeder bolt of the water tank to discharge the

coolant.

4.2 Use the snap ring pliers to loosen the clamp on

connecting pipe of water tank.

4.3 Use the snap ring pliers to loosen the connecting

water pipe of A/C heating water tank.

4.4 Use the snap ring pliers to loosen other connecting

water pipes.

5. Disassembly and installation of water pump assembly:

5.1 Remove upper and lower covers of timing gear (refer

to disassembly and installation of gear and belt of timing

gear).

5.2 Use a caliper to take off the clamps on the three

discharging tubes and then pull out the rubber hoses.