Chery QQ Service Manual 465 Engine Mechanical System
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Chery Automobile Co., Ltd
Notice: Put oil to surface of piston ring and
cylinder hole, at the same time, install
connecting rod.
6 Install connecting rod upper bearing shell,
put oil only on the side which is facing
the crank, push the connecting rod until it
is in the right position of the crank.
7 Install connecting rod cover on the lower
bearing shell, put oil on the side which is
facing the crank for lubricating.
8 Put new bolt on the connecting rod ,it is
not necessary to screw the bolt
9 Rotate the crankshaft for several circles,
make alignment of the connecting rod
totally, then tighten the connecting rod
bolt and fix the connecting rod bolt.
connecting rod bolt 27.46-31.38 N.m
10 Install oil pan, you shall be sure to keep
in mind to use tight glue for tightening
the oil pan bolt 10N.m
11 Install oil drain plug
12 Install cylinder head accordingly
Notice: Use oil of SAE 10W30 for the
engine.
III Replacement of piston ring
Procedures of disassemble
1 Take the connecting rod assembly of the
piston away accordingly
2 Take piston ring out.
3 Clean the smooth surface of piston, get rid
of the grease remained in pin hole and
fillisters with suitable scraper.
Check and measure
1 Check stem of fillisters of the piston or
skirt of the piston to see whether or not
there are some fractures.
2 Check piston ring
3 Check piston crown to see whether or not
there are some deformation, damage or
rusteaten.
4. Put the circlip in the cylinder and use the
piston to push it in cylinder wall at a bank
angle of 90 degree, in accordance with
corresponding measured distance
between piston ring ends.
Item
Standard Limit
Inside
Ring
gap
No.1
0.03
~
0.07
㎜
0.12
㎜
No.2
0.02
~
0.06
㎜
0.10
㎜
5 Install the piston ring on the piston
according to the sequence of location of
clearance, that is to say the split of every
ring should be staggered at a angle of 180
degrees.
6 Measure the distance between ring and
groove of ring to see whether or not the
following data is true:
upper compression ring 0.05mm
lower compression ring 0.04mm
7 Measure the distance between piston ring
end, put the piston in the cylinder ,push it to
the bottom of cylinder, it is necessary to
replace the piston ring if the measuring
value exceed the limit.
Procedures of installation
Install the piston accordingly
Item
Standard
(mm)
Limit
Piston ring
Open
gap
Air
ring
0.15-0.35 0.7mm
Oil
ring
0.30-0.90 1.8mm