Chery Tiggo T11 LHD. Manual — part 81
Service Manual for Chery·Tiggo (T11) Engine Section
Piston and Connecting Rod Component Installation
(1) Daub enough engine oil on piston, compression
ring and oil control ring.
(2) Adjust open position of compression ring and
oil control ring (blade and main ring) to the
position as shown.
(3) Rotate crankshaft to make crank pin located in
the middle of cylinder
(4) Before inserting piston and connecting rod
component into cylinder, proper screw-mounted
protector is applied in connecting rod bolt. Be
careful and don’t damage crank pin.
(5) Use suitable piston ring compressor to insert
piston and connecting rod component into
cylinder.
Caution:
·There’s a forward mark on the top of piston,
make it point to straight position of the
engine (the side of timing belt).
Connecting Rod Bearing Installation
If it is necessary to replace bearing, choose and
install bearing according to the following steps.
(1) Measure external diameter of crank pin and
confirm the groups according to the following
table.
As
crankshaft
for
maintenance,
distinguish sizes by painting color in the
position as shown.
(2) Identification mark of connecting rod bearing is
imprinted in the position as shown.
Crank pin
Connecting rod bearing
Groups
Identification
color
External
diameter
(mm)
Identification
mark
Identification
color
Thickness
(mm)
Ⅰ
Yellow
44.995~
45.000
1
Yellow
1.487~
1.491
Ⅱ
Nil
44.985~
44.995
2
Nil
1.491~
1.495
Ⅲ
White
44.980~
44.985
3
Blue
1.495~
1.499
Internal diameter of connecting rod:48.000~48.015mm
(3) Choose bearing in the table above, according to
groups assured in (1) and (2).
Examples for choosing bearing:
If measurement value of external diameter of
crankshaft pin is 44.996mm , it shall be Group 1
in the table above. If replacing crankshaft of
maintenance, check identification color applied
on new crankshaft pin. If it’s yellow, crankshaft
pin shall be Group 1 and choose connecting rod
bearing of which identification mark is 1.
Direction
mark
Timing belt
side
Side of the
crankshaft
pulley
R2 open and
main
ring
open
Upper blade
Lower blade
Piston pin
identification
mark
Service Manual for Chery·Tiggo (T11) Engine Section
Installation of Connecting Rod Cap
(1) When installing connecting rod cap, check
marks of disassembling. If installing new
parts which have no marks, install
anti-rotating gap as shown on one side.
(2) Ensure if axial clearance of big end of
connecting rod is suitable.
Standard value:0.10~0.25mm
Limit value:0.4mm
Connecting Rod Nut Installation
Caution:
Before installing connecting rod cap,
disassemble
spark
plug
and
install
connecting rod nut, if having installed
cylinder cap.
(1) As for connecting rod nut and bearing,
plastic-zone screw-on method shall be
adopted. Before reusing the bearing, check if
the bearing is expanded. Checking method:
screw nuts into screw thread of bearing with
fingers till the whole length of screw thread. If
nuts can’t be screwed on smoothly, screw
thread may be expanded and bearing should
be replaced.
(2) Before screwing nuts on, daub oil on screw
thread of nuts and seat surface.
(3) Screw nuts into bearing with fingers and
screw nuts on alternatively to install
connecting rod cap correctly.
(4) Screw nuts on by torque of 20N.M.
(5) Daub paint mark on every nut head.
(6) Daub paint mark on bolts of which the
position is from paint mark on every nut
head to screwing direction of90~100°and
note down the paint mark.
(7) Screw nuts on from 90~100°until marks
on nuts and bearing are aligned.
Caution:
If screwing angle is less than 90°,
screwing specified capability can’t
be assured. When screwing it on,
notice screwing angle.
If screwing nuts are excessively
tightened (exceed angle of 100°) ,
screw nuts off totally. And restart to
screw nuts from step 1
油漆
标记
油漆标记
cylinder
number
anti-rotating
gap
paint mark
paint
mark
Service Manual for Chery·Tiggo (T11) Engine Section
Check
Piston ring
(1) Check if there’s damage, excessive wear and
breach on piston ring. If any, replace it. If
replacing piston, it is necessary to replace
piston ring.
(2) Check clearance between piston ring and piston
ring groove. If it’s too wide, replace piston ring
or both of them.
Standard value: 0.02~0.06mm
Limit value: 0.1mm
(3) Put piston ring into cylinder. After using top
surface of piston to put it away, measure open
clearance with clearance gauge. When open
clearance is too wide, replace piston ring.
Standard value:
No.1 ring…0.25~0.35mm
No.2 ring…0.40~0.55mm
Oil control ring…0.10~0.40mm
Limit value:
No.1 ring and No.1 ring…0.8mm
Oil control ring…1.0mm
Oil clearance of crank pin (Plastigauge )
(1) Clean the oil on connecting rod neck and
bearing out.
(2) Divide plastigauge into the same length of
rearing width and put it on crank pin and make
it parallel to axle center line.
(3) Install connecting rod cap carefully, and screw
nuts on according to the regulated torque.
(4) Disassemble connecting rod cap carefully.
(5) Use measuring rule imprinted on the package of
plastigauge to measure the width of the widest
part of staved plastic line and get clearance
value.
Standard value:0.02~0.05mm
Limit value:0.1mm
press in with piston
open clearance
piston ring
plastigauge
2 、
Crankshaft, cylinder block and
flywheel
Disassembling steps
1.
Screw rearing of flywheel<M/T>
2.
Jointing board<M/T>
3.
Flexible flywheel<M/T>
4.
Jointing board<M/T>
5.
Crankshaft bushing<M/T>
6.
Rear cover board
7.
Bell housing
8.
Rear oil seal cap
9.
Rear oil seal
10.
Main bearing cap bolt
Daub engine oil on
all the operation
parts
when
installing.
7
8
9
8.8N.m
6
16
15
14
13
12
11
10
25N.m+90
o
to10
0
o
Disassembling
illustration
2.5kgf.m
11.
Main bearing cap
12.
Lower bearing of crankshaft
13.
Crankshaft
14.
Upper bearing of crankshaft
15.
Crankshaft thrust rearing
16.
Cylinder block
17.
Drive board〈A/T〉
18.
Crankshaft sleeve〈A/T〉
18.
Jointing board〈A/T〉
19.
Driving board bolt
〈A/T〉
17
20
19
18
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