Chery B11. Manual — part 52

Maintenance Manual for Chery·Oriental Son

Engine Section

31

II. Rocker arm and camshaft

Disassembling steps

1. air flow tube
2. P.C.V. tube
3. fuel filler cap
4. rocker arm cap
5. pad of rocker arm cap
6. oil seal
7. oil seal
8. rocker arm and rocker shaft
9. rocker arm and rocker shaft
10. rocker shaft spring

Disassembli

ng

11.rocker arm A

12.rocker arm B

13.rocker shaft(intake side)

14.hydraulic erect post

15.rocker arm C

16.rocker shaft(exhaust side)

17.hydraulic erect post

18.camshaft

Maintenance Manual for Chery·Oriental Son

Engine Section

32

1．Disassembling Notice

Disassembling of rocker arm and rocker shaft

(1) Before disassembling the rocker arm and

rocker arm shaft assembly, install the
special tools as shown in the illustration
to prevent dropping of hydraulic erect post.

2．Installation Notice

installation of hydraulic erect post

(1) Soak the hydraulic erect post in clean

diesel oil.

(2) With the special tool “exhaust steel wire”,

while slightly pressing the steel ball of
check valve, move the plunger up and down for
four to five times to exhaust the air.

Caution:As the rigid ball spring is especially
soft, do not push the steel ball too violently
with exhaust steel wire in case any damage to
the hydraulic erect post.

It is easy to exhaust air from the hydraulic
erect post installed by rocker arm with a
keeper(special tool).

MD998443

(3) Insert the hydraulic erect post into the

rocker arm, being careful to avoid diesel
oil overflow. Then apply special tool to
prevent the dropping of hydraulic erect post
during the installation.

hydraulic

erect post

Installation of rocker shaft spring,

rocker arm and rocker shaft

(1) Fasten the intake rocker shaft with a bolt

temporarily until no rocker arm push and
press the valve.

(2) Assemble the rocker shaft spring from the

upper until it is vertical with the duct
of spark plug.

Caution:The rocker shaft spring should be

installed first and then tighten the
bolt of exhaust rocker arm.

(3) Disassemble the special tool for keep the

hydraulic erect post.

(4) Make sure that the position of cutting

opening in the rocker shaft is in that
shown in the illustration.

Caution:The oil hole in the rocker shaft
should be aligned with the cylinder block to
ensure a correct installation position.

Maintenance Manual for Chery·Oriental Son

Engine Section

33

Installation of camshaft oil seal

Install the oil seal of camshaft with

special tool

MD998713

3．Check

camshaft

(1)Measure the height of cam

The standard value and usage limit
value are as follows.
4G64：

standard

value

usage limit

value

intake

37.39

36.89

exhaust

37.14

36.64

4G63：

standard

value

usage limit

value

intake

37.50

37

exhaust

37.14

36.49

Rocker arm

(1) Check the surface of the roller. If

there is any trace, there must be some
damage or check and the rocker arm
should be replaced.

(2) Check whether the roller could revolve

smoothly and evasively. If it could not
revolve smoothly and evasively or is a
bit loose, the rocker arm should be
replaced.

(3) Check the internal diameter. If there

is some damage or lock is checked, the
rocker arm should be replaced.

Test on the return leakage of

hydraulic erect post

Caution:

·The hydraulic erect post is a precision
spare part. There should not be any dust
or foreign matter on its surface
·It is not allowed to disassemble the
hydraulic erect post.
·It is required to use clean diesel oil
to clean the hydraulic erect post.

(1) Soak the hydraulic erect post in clean

diesel oil.

With the special tool (MD998442),
while pressing the steel ball in the
inner side, exhaust the air by moving
the plunger up and down for four to
five times. It is easy to exhaust air
from the hydraulic erect post
installed by rocker arm.

roller

end

MD998442

diese
l oil

Maintenance Manual for Chery·Oriental Son

Engine Section

34

（ 3 ） Disassemble the special tool

(MD998442) and check whether the

plunger could be pressed. If it is

not easy to press the plunger, the

hydraulic erect post is normal. If

it is easy to press the plunger to

the end, the hydraulic erect post

should be exhausted again and then

be checked again. If the plunger is

still loose, the hydraulic erect

post should be replaced.

Caution:

· After the exhaust of air, the

hydraulic erect post should be kept

erect to avoid outflow of the

internal diesel oil.

（4）After the exhaust, the hydraulic erect

post should be installed in special

tool (return leakage tester).

（5）When the plunger sinks a little(0.2～

0.5mm), measure the time it needs to

sink a second 1mm. If the measurement

value is not conformed to the standard

value, replace the hydraulic erect

post.

Standard value: 4 ～ 20seconds/1mm

(applying diesel oil of 15～20℃)

hydraulic

erect post

graduation
=1mm

MD998440