Chery SQR372 - 7-4-5 Assembling of the crankshaft connecting rod mechanism

SQR7080 Service Manual 372 Engine Mechanical System
42
Chery Automobile Co., Ltd
Frontward mark
7-4-5Assmbling of the crankshaft connecting rod
mechanism
1. Assembly of the piston and connecting rod
（ 1 ） Use special tools to assemble the piston,
connecting rod and piston pin in the following
specified procedures.
① Smear lubricating oil to the connecting rod pin
hole, and make the assembly according to the marks
for the same unit and in the indicated direction.
② Make the installation shown as the right figure.
③ Make adjustments and installation of the piston and
the connecting rod shown as the right figure.
④ After smearing lubricating oil to the piston pin, use
pressurizing device to assemble the piston and the
connecting rod.
Attention
· Pay attention to the assembling direction when
pressing in the piston pin;
Ÿ The small bit of connecting rod should be heated to
300℃ while pressing the piston pin in the piston.
Ÿ Exert pressure in the process of pressing by
assuring the alignment of the pin.
（2）Side face with marks should be upright, install
steel belt assembly oil ring (gasket ring, down scraper
and upper scraper),then install the secondary ring, then
install the primary ring
Open degree of every ring is shown as the illustration:
From
up to
down：
No.1 ring
No.2 ring
Oil ring
No.1 ring No.2 ring
Up
Gasket
下刮片
Ring open angle：
Up scraping
Down scraping
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