Chery automobile Service Manual page 58

Installation
Piston weights and spare piston skirts are not
grouped, but the piston pin holes shall be
grouped. Before assembly, check the piston
crown marks. The marks of the four cylinders
must be same.
Heat the small end of the connecting rod to
230~400 , apply SAE50 lube or glue type of
graphite oil, then press the piston pin into the
small end bore of the connecting rod and the
piston pin bore. One end of the piston pin can
be 0.7mm max higher than the pin boss or
lower than the pin seat, and the other end shall
be in the pin boss.
The forward pointing arrow on the piston
crown and the forward pointing bump on the
external surface of the piston pin seat shall be
in the same direction with the "F" near the big
end on the connecting rod body (For some
blanks forged with the number "480", the side
with the number shall be upward.
After connecting the piston, piston pin and the
connecting rod together, print or chisel the
cylinder number (size: 3mm) on the top of the
piston, connecting rod body and left of the
connecting rod cap. The printing shall not lead
to the distortion of the junction plane.
When installing the piston ring, the side with
characters shall be upward and the external
slit of the second compression ring shall be
downward. Detailed order is as follows: (1)
install the oil control piston ring; (2) install
the second compression ring and (3) install
the first compression ring. When installing the
ring, the max. expanding must be less than
(size of cylinder bore + 1.65mm) , otherwise
the ring is subject to distortion or broken off.
The opening of the two sealing strips of Steel
belt combination oil control ring shall be
staggered from each other by 120 while the
one of cast iron oil ring shall be stagger from
that of spiral bushing ring by 180
piston shall be able to rotate freely in the ring
groove and no jamming shall exist.
Forward
pointing bump
First compression ring
nd
2 compression ring
Steel belt combination
oil control ring
. The
Cast spiral oil control ring
B-37
Only one side