Chery A15. Manual — part 16

ENGINE LUBRICATION SYSTEM

DESCRIPTION OF LUBRICATION SYSTEM

——The rotor oil pump (1) at the front end of the

crankshaft sucks oil out of the oil pan (3) by
oil strainer (2) and pressurizes oil, and then
the pressurized oil will enter the full-flow oil
filter through the auxiliary oil passage (4) at
the left side of the cylinder(view from the
front). A relief valve (6) is set up inside the oil
pump to control the pressure at the main oil
passage. The relief valve opens at
440kpa+20kpa, and the filtered oil flow from
the center hole in oil filter through the center
hole of the filter terminal to the engine main
oil passage.

——The main oil passage lubricate the main

bearing through holes on the cylinder block
and lubricate the connecting-rod bearing
through the oil passage inside the crank shaft.

——On the side of the vent pipe of the

connecting-rod bearing is a small oil hole
from where oil will eject to lubricate piston
pin and cylinder.

——Oil pressure sensor (8) is close to oil filter,

connected to the main passage through an
internal oil passage. And engine oil will be
provided upward to the third camshaft journal
from the upper oil passage.

——Other camshaft journals get oil from the

middle passage of the camshaft, whose ends
are sealed with steel balls.

6. Oil Pump Relief Valve

7. Oil Filter

8. Oil Pressure Sensor

9. Camshaft

10. Hydraulic Jib

1. Oil Pump Rotor Assembly

2. Oil Strainer

3. Oil Pan

4. Cylinder Auxiliary Oil Passage

5. Cylinder Main Oil Passage

D-2

——Hydraulic jib gets oil through the oil passage

through which the oil tank at the camshaft
supplies oil to the cylinder cap.

——The interface between valve rocker and hydraulic

jib is lubricated by oil through the oil hole in
hydraulic jib.

——Rocker seat is lubricated by oil through cylinder

cap oil passage. The interface between valve
small end and rocker is lubricated through
splashes.

OIL PAN

Disassembly:

——To unscrew the oil-tapping bolt and empty the

pan.

——To unscrew 18 M6X20 bolts.

——To take out the oil pan gasket.

——To check if both reinforcing pads are clamped

tightly on the back of the oil pan flange

.

D-3

Assembly:

——To spread Letai 598 seal glue or GY409

anaerobic glue on the connecting areas between
cylinder oil pan flange and oil pump body and
rear oil seal support.

——To put the new rubber gasket on the cylinder

body, placing both ends of the gasket into the rear
oil seal support and oil pump rut.

——To install oil pan, placing both ends of the gasket

into oil pan rut.

——To screw up the bolts (the bolts shown in the up

left figure first) manually.

——To screw up the bolts to 5.0 – 8.0N.m in order as

shown in the left figure.

A From crankcase to oil pump body
B

r

F om crankcase to rear oil seal support

F

D-4

OIL FILLING

— — To fill the engine with 3.1 ± 0.15L of oil

(SAE10W/30SF grade, or SAE5W/30SJ grade at
temperature lower than -18℃)

——The oil surface shall be between “max” and

“min” on the dipstick.

OIL STRAINER ASSEMBLY

Disassembly:

——To unscrew the locknut of the oil strainer support

and take out the nut and gasket.

——To unscrew and take out the support bolt.

——To unscrew oil strainer flange bolts (two) and

take out two gasket bolts with spring.

——To install the new oil strainer gasket to the oil

pump flange, setup the oil strainer assembly and
screw up two bolts with gaskets. —To screw the
oil strainer support to the cylinder using M8
bolts, put the support onto the stud on the left of
the second main bearing cap, place back the flat
washer and screw up the nuts manually.

— — To screw up the oil strainer flange bolt to

8-12N.m.

——To screw up the support bolt to 17-23N.m.

——To screw up the locknut to 17-23N.m

Oil Strainer Assembly

Fastening Torque Of 8.0-12.0N.M
Washer Bolts with Spring (Two)

Flat

Nut

M6X16: M6x16 Bolt
Fastening Torque Of
8.0-12.0N.M

D-5