Chery A15. Manual — part 234

(5) Carefully fix the conduit oil seal with
the special tool (Figure 49).

1-Special tool





(6) Release the special tool in the spark
plug hole and use a long bolt to unfix the
special tool (Figure 50).


1-Special tool
2-Spark plug conduit






(7) Fix the valve chamber cover (see
Engine/Cylinder Cover/Valve Chamber
Cover – Fixing).
(8) Fix the spark plug.


Five. Rocker arm shaft/rocker
arm/adjustment
1. Unfixing
(1) Detach the storage battery cathode
fittings.
(2) Unfix the valve chamber cover (see
Engine/Cylinder Cover/ Valve Chamber
Cover – Fixing).
Note: please unfix the rocker arm in
sequence.
(3) Unfix the bolts of rocker
arm/camshaft bearing cover and the
central bolts.
(4) Unfix the rocker arm/rocker arm
assembly (Figure 51).

Figure 49 Fixing the Spark Plug

Figure 50 Unfixing Device

Note: please replace the hydraulic
tappet together with the rocker arm.
1-Exhaust valve rocker arm
2-Intake valve rocker arm adjusting
gasket
3- Intake valve rocker arm shaft
4- Intake valve rocker arm
5-Camshaft
6-Camshaft bearing cover
7-Exhaust valve rocker arm shaft


2. Fixing
(1) Clean and lubricate the rocker arm
with clean engine oil.
(2) Fix the rocker arm shaft/’rocker arm
shaft assembly bearing cover (Figure 34).
(3) Manually fix the rocker arm
shaft/camshaft bearing onto the cylinder
cover.
Note: please check if the camshaft is
correctly positioned when screwing
tight the rocker arm shaft/camshaft
bearing covers.
(4) Screw tight the rocker arm
shaft/camshaft bearing cover bolts in
sequence (Figure 52) with a torque of
25N.m.


(5) Fix the valve chamber cover (see
Engine/Cylinder Cover/ Valve Chamber
Cover – Fixing).
(6) Connect the storage battery cathode
fittings.


Six. Camshaft
1. Unfixing
(1) Detach the storage battery cathode
fittings.

Figure 51 Rocker Arm Shaft/Hydraulic

Tappet

Figure 52

(2) Unfix the valve chamber cover (see
Engine/Cylinder Cover/ Valve Chamber
Cover – Fixing).
(3) Detach the camshaft position sensor
plug and take out the camshaft position
sensor.
(5) Turn the camshaft until the first
cylinder reaches the compression stroke
upper limit.
(6) Secure the camshaft sprocket wheel
with a special tool and unfix the
camshaft sprocket wheel bolts (Figure
53).



1-Special tool





(7) Install the special tool (Figure 54) to
fix the camshaft, screw tight the tool
bracket bolts and slide the sprocket
wheel to the special tool (Figure 54).


1-Special tool




Note: please unfix the intake and
exhaust rocker arm shaft as follows:
(8) Unfix the rocker arm shaft/camshaft
bearing cover bolts and central bolts.
(9) Unfix the rocker arm shaft/rocker
arm assembly.
(10) Unfix the camshaft bearing cover
and mark accordingly (see the following
figure).

Figure 53 Special Tool for the Spanners

of Camshaft Sprocket Wheel

Figure 54 Camshaft Sprocket Wheel

Retainer

2. Checking
(1) Check if the camshaft bearing bush is
damaged or not (Figure 55). Please
check the cylinder cover and cylinder
cover oil hole if any.
(2) Check if the camshaft and bearing
surfaces suffer any abnormal wear and
damage and replace the camshaft if any.
(3) Check if the camshaft bearing cover
suffers any wear and damage.
Note: the replacement of camshaft is
determined by the abrasion of the
camshaft. It is allowed to replace the
rocker arm shaft.
(4) Measure the actual abrasion of the
cam nose (Figure 55) or replace the
camshaft.
1-Not worn out
2-Actual abrasion
3-Bearing bush
4-Cam
5-Place subject to abrasion
3. Fixing
(1) Lubricate the camshaft bush with
clean engine oil.
(2) Fix the camshaft sprocket wheel and
lock it with a positioning pin.
(3) Fix the correct camshaft bearing
cover (Figure38).
(4) Lubricate the rocker arm with clean
engine oil.
(5) Fix the rocker arm shaft and rocker
arm assembly onto the camshaft.
(6) Manually fix the rocker arm
shaft/camshaft bearing onto the cylinder
cover.
Note: please check if the camshaft is
correctly positioned when screwing
tight the rocker arm shaft/camshaft
bearing cover.
(8) Screw tight the rocker arm
shaft/camshaft bearing cover bolts in
sequence (Figure 56) with a torque of
25N.m.

Figure 55 Check the Abrasion of the

Camshaft

Figure 56 Screwing Sequence of the

Rocker Arm