Chery A11. Manual - part 22

CAC Gasoline Engine Maintenance And Servicing Manual

——Nine main bearing bolts are hex head flange side bolts, and one is stud.
For  horizontal  engine,  the  stud  is  mounted  in  the  left  threaded  hole  of  the
second  main  bearing  cap  (see  from  the  front)  which  is  for  installing  the
carrier of  oil collector. For the  vertical engine, it should  be  mounted  on  the
left threaded hole of the forth main bearing cap (see from the front).

Before installing the main bearing bolt, engine oil should be applied on

the joint surface of head end.

The main bearing bolt and stud should be screwed by hand first and

tightened to 90—100Nm.
——The max rotating torque of the crankshaft (with piston rod assembly) is
16Nm.

【12】. The removal and installation of oil baffle assembly

Removal：
——Take out the oil baffle assembly
from the right of the back end of the
cylinder body.

Installation：

——Install  the  oil  baffle  assembly  from
the  right  of  the  back  end  of  the  cylinder
body  (viewed  from  the  front).  The  oil
baffle assembly should be tensioned.  The
spring  should  be  lower  than  the  flange
surface of cylinder block oil pan.

Fig. 69

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CAC Gasoline Engine Maintenance And Servicing Manual

【13】. Engine oiling system:
1). The description of the oiling system:

        Through  oil  collector  (2),  the  rotary  oil  pump(1)  which  is
installed in the front end of crankshaft draws oil from oil pan (3)
and    pressurizes.  The  pressure  oil  comes  into  the  full  flow  type
oil  filter  through  the  assistant  oil  passage  (4)  on  the  left  of
cylinder  body  (viewed  from  the  front).  The  pressure  relief  valve
(6)  is  installed  inside  the  oil  pump  case  to  control  main  oil
passage pressure . The pressure relief valve will be opened under
the pressure  within 440kPa±20kPa.  The filtered  oil    comes out
from  the  center  hole  of  oil  filter  and    comes  into  the  main  oil
passage of engine (5) through the center hole of filter connector.
        From  the  main  oil  passage,  oil  lubricates  the  main  bearing
through  the  bore  in  the  cylinder  body  and  lubricates  the
connecting rod bearing through oil passage in the crankshaft.
        There  is  a  small  oil  port  in  the  connecting  rod  bearing  bore
near  the  exhaust  side  in  the  connecting  rod  body.  The  oil  sprays
out from this small oil port to lubricate the piston pin and cylinder
bore.
        Oil  pressure  sensor  (8)  is  located  near  the  oil  filter.  It  is
connected with the main oil passage by a inner oil passage. Oil is
provided to the third journal of camshaft through this oil passage.
        Other journals of camshaft are lubricated by the oil provided
by  the  middle  oil  passage  of  camshaft.  Two  sides  of  the  middle
oil passage are sealed by steel ball.

Hydraulic lifter oil comes from oil gallery on cylinder head,

which is supplied from oil channel on camshaft neck
        The  oil  provided  by  the  oil  port  inside  the  hydraulic  valve
lifting rod lubricates the contact face

of valve rocker and hydraulic valve lifting rod.

The

oil

lubricate the rocker carrier is provided by the oil passage of
cylinder head.

The

contact face of the tip end of valve and rocker is lubricated by
splashing.

1. rotary oil pump assembly 6. oil pump pressure

relief valve

2.  oil collector                                      7. fuel filter
3.  oil pan                                              8. oil pressure sensor
4.  assistant oil passage of cylinder      9. camshaft
5.  main  oil  passage  of  cylinder            10.  Hydraulic  valve

lifter

fig. 71

Fig. 72

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CAC Gasoline Engine Maintenance And Servicing Manual

2) The removal and installation of oil pan：

removal：
——Loosen drain plug and drain oil
——Loosen eighteen M6×20 bolts
——Take out the sealing gasket of oil pan
——Check if the left and right reinforced plates are still clipped on the
back face of oil pan flange face

Installation：
——Apply  locite  598  sealant
and  G  Y409  anaerobic  sealant
on  the  joint  place  between
flange  surface  of  oil  pan  of
cylinder body and oil pump case,
and carrier of real oil seal.
——Put  the  new  rubber  seal
gasket on the cylinder body and
have  the  two  sides  of  sealing
gasket  enter  into  the  grooves  of
carrier  of  real  oil  seal  and  oil
pump.

——Install the oil pan with the
two sides of sealing gasket in
the grooves of oil pan.

——Screw the bolt by hand (the bolt with washer indicated
in the left upper figure is precedent.)

——Tighten bolts to 5.0—8.0Nm according to the sequence of the left
figure.

——Replace the sealing gasket of drain plug. Screw in the drain plug
by hand and tighten to 21—25Nm.

Fig. 73

A. crankshaft to oil

pump shell

B. crankshaft to rear

oil seal carrier

fig. 74

Fig.75

forward

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CAC Gasoline Engine Maintenance And Servicing Manual

The removal and installation of oil collector assembly

removal：
——Loosen locknut of oil collector assembly and take out the nut
and flat washer
——Loosen carrier bolts and take out the bolts。
——Loosen flange face bolt of oil collector (two ) and take out the
two bolts with spring washers

Installation：

——Install  a  new
sealing  gasket  of
oil  collector  on
the  flange  face  of
oil  pump and then
install

oil

collector assembly.
Screw two bolts
with gasket by
hand.

——Screw the oil
collector

carrier

into the cylinder
body

with M8

bolt.  At  the  same
time,  hitch  the
carrier  into  the
stud  which  is  in
the  left  of  the
second

bearing

cap.  Install  the
flat  washer  and
screw  in  the  nut
by hand.

——Tighten the
flange face bolt of
oil collector to
8.0—12.0Nm.

——Tighten carrier bolt to

17—23Nm

——Tighten the locknut to

17—23Nm

Fig. 76

Tightening torque 8.0-12.0Nm

with spring plate screws(2)

oil collector

screw M6×20

tightening torque

23.0Nm

screw M8

flat washer

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