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