JAC J2 User Manual

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Maintenance Manual for J2 Sedan
Mechanical Part of Engine
33
Chapter I Mechanical Part of Engine
Section I Engine Body
I. General Precautions
1.
Precautions
on
Discharging
Engine
Coolant
Discharge coolant after engine has cooled down.
2.
Precautions
on Disconnecting Fuel Pipeline
1)
Before the
operation, ensure that
the
operating area is free of objects which may
cause combustion
or sparks.
2)
Disconnect
the
piping,
plug
openings to
prevent leakage
of
fuel.
3.
Precautions
on Dismantlement and Disassembly
1)
Use specia
l tools as required in Instruction. Always operate safely; any forcible operations and
operations other than that specified in Instructions are forbidden.
2)
T
ake particular
care not
to damage
the mat
ching face or
the sliding
face.
3)
Use the
adhesive tape or
equivalent to cover the opening of engine system so as to prevent the entry
of foreign bodies, if necessary.
4)
For the
purpose of
troublesho
oting and
reassembly,
methodically mark
and
neaten
the
disassembled
parts.
5) When loose
ning the b
olts and
nuts, follow th
is basic principle: “outmost o
nes first, d
iagonal ones
second, and so on”. Conduct the operation in compliance with the loosening sequence, if specified.
4.
Precautions
on
Check,
Repair
and
Replacement
Thoroughly check the parts before repair or replacement. Check the substitutive parts by the same
means, and then replace as required.
5.
Precautions
on
Assembly
and
Installation
1)
Use th
e torq
ue spa
nner
to t
ighten
the
nuts a
nd bolt
s.
2) When tightening the
nuts and
bolts, follow this basic principle: screw up the
central nuts
and bolts
with the same torque in steps, and then carry out the same operation with the internal and external
diagonal ones. Perform the operation in accordance with the tightening sequence, if it is specified.
3)
Replace
gaskets,
oil
seal or O-ring with new ones.
4) Thoroughly rinse, clean and dry every part. Carefully check the engine oil pipeline or engine
coolant pipeline for obstruction.
5)
Never damage
the sliding face and
the
matching face.
Completely eliminate
the
foreign bodies such
as cloth scraps or the dust. Before assembly, paste the sliding face with engine oil.
6)
When refilling engine
coolant after
draining completely,
release air
from the
pipes at
first.
7)
After repair,
start the engine and run with high speed to check for any leakage of the engine coolant,
fuel, engine oil and exhaust gas.

JAC J2 Specifications

General

Brand	JAC
Model	J2
Category	Automobile
Language	English