Chery Amulet Engine. Manual — part 11

——Check the clearance between outer rotor of oil pump and case bore
of oil pump.

The clearance between outer rotor of oil pump and case bore of oil

pump should be 0.06—0.19mm.









——Check the radial clearance between inner rotor and outer rotor of oil
pump.
The radial clearance between inner rotor and outer rotor of oil
pump should be 0.05—0.18mm.








——Check the end play of rotor
The end play of rotor should be 0.014—0.100mm.



——Remove horizontal hexagonal socket head plug (small one)
——Take out the spring of relief valve and plunger of relief valve.
——Check the spring load and free length
Spring free length is 46mm。
Spring load is 32.8N±2N when the length is 29mm.
Installation length of relief valve spring is 38.5mm.

Fig. 83

Fig. 84

Fig. 85

Fig. 86

——If relief valve spring is not to specification, it must be
replaced.

Installation：
——Install the outer and inner rotor into the oil pump house
ensuring the installation mark of outer and inner rotor
upward.
——Install oil pump cover on oil pump. Tighten seven chamfer

head screws. Tightening torque is

79 in-lbs.

——Install relief valve and relief valve spring into the oil pump
bore.
——Screw 3/8″plug screw into the oil pump house. Keep it in
place. Tightening torque is

17 ft-lbs.

——Stick the new oil pump sealing gasket on the front end of
cylinder block.
——Install the oil pump into the front end of crankshaft.
Center the inner bore of inner rotor before installation.
——Screw six mounting bolts by hand.
——Check and adjust the roughness of lower surface of oil

pump and flange surface of cylinder block oil pan. It should be

within the range:±0.26mm.
——Tighten the retaining bolt of oil pump to 89 in-lbs.
——Apply the engine oil on the oil seal journal of crankshaft.

——Wrap a plastic tape on the oil seal journal of crankshaft
avoiding to damage the edge of front crankshaft oil seal.
——Apply engine oil on the edge of front crankshaft oil seal.
Press the oil seal in place using appropriate socket or sleeve and

crankshaft pulley and pulley bolt and washers.

Fig. 87

Fig. 88

Fig. 89

Fig. 90

——Remove the thin plastic protective tape








5. Removal and installation of oil filter and oil pressure sensor.
Removal：

——Remove the oil filter. Rotate oil filter counterclockwise

during removal.

——Remove the oil pressure sensor
Installation：
——Apply engine oil on the sealing gasket of oil filter and
screw into the connector. Tightening torque is 12－17Nm.
Or screw into oil filter by hand. once rubber sealing gasket
contacts cylinder block, tighten another 3/4－1 turns.
——Apply Lotite 243 sealant and screw it to the main oil
passage of cylinder block. Tightening torque is 2

0 ft-lbs.

The threaded hole of oil pressure sensor is 1/4″－

18NPTF.

Fig. 91

Tightening torque 18.0-25.0Nm

Oil filter

Oil pressure
sensor

Fig. 92

【14】. Engine cooling system

1) Description for cooling system

The cooling system is of pressure system. It
includes water pump driven by timing belt,
crosscurrent radiator, expansion tank, pressure
cap, thermostat and electric fan, fan shroud.

When engine coolant temperature is low,

water pump draws the coolant in the left water
room of radiator and pump it to the cylinder
block, cylinder head and intake manifold after
pressurizing, going from the local circulation
pipe of the thermostat seat to the warm air
heat exchanger, and then from heat exchanger
back to water pump inlet. The coolant back
from intake manifold joins the heat exchanger
and then backs to water pump inlet.
When engine coolant temperature reaches the
point for thermostat to open, the coolant for
cooling cylinder block, going through the
opened thermostat, combusting chamber and
behind the valve seat, will go into the right

water room of radiator from the drain pipe
of thermostat seat. For being cooled by
electric fan blowing, the coolant is already
cooled When it reaches the left water
room,.

When engine works under normal working temperature, coolant will expand. So the relief valve in the
thermostat seat opens. The coolant enters the expansion tank from overflow tube. After the system is cooled,
the coolant comes back to the inlet of water pump from expansion tank.

The electric fan operation is controlled by thermo switch installed in the right water room of radiator.

When the contact point of thermo switch closes, the electric fan operates. Water temperature sensor is at the
back of the cylinder head at exhaust pipe side.

—cooling system parameters：
Total system capacity

electric fan water pump

Engine capacity

diameter. 280mm

diameter of impeller 72mm

radiator capacity

blade quantity 6 speed ratio 1.053∶1

pressure cap

RPM GradeⅠ 1500r/min

operating pressure

23.2 psi

radiator

Grade Ⅱ 2800r/min water temperature sensor

front face area 0.202 ㎡

radiation area 8.93 ㎡

thermostat

opening temperature

wide opening temperature

Hose

Hose

Warm

wind

heat exchanger

Hose

Hose

Pressure

cap

Expansion

tank

Hose

Engine

Temperature

regulator

carrier with temperature
regulator assembly

Water

temperature

sensor

Coolant
pipe
assembly

Hose

assembly

Hose

assembly

Radiator

Thermo

switch

Electric fan

W

a

te

r p

u

m

p

in

le

t

Fig. 93

2.0 gallons

0.9 gallons

0.55 gallons

185°F - 192°F

192°F - 216°F