JAC J2 User Manual

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Maintenance Manual for J2 Sedan
Mechanical Part of Engine
88
XV. Parameters for Maintenance
1.
List
for
T
echnical
Parameters
of
Engine
Technical Parameters list of Engine
Item
Standard
Value
Limits
Camshaft
Camshaft
base
circle
diameter
(mm)
36
—
Diameter
of
camshaft
journal
(mm)
32.033-32.082
—
Cylinder head and valve
Planeness of cylinder gasket surface (mm)
＜
0.03 0.1
Total
height
of
cylind
er
head
(mm)
112.9-113.1
—
Intake valve 1.35 0.85
Thickness of valve edge (mm)
Exhaust
valve
1.85
1.35
Diameter of
valve
stem
(mm)
Φ5 —
Intake
valve
0.020-0.0
36
0.10
Clearance between valve stem and
valve guide (mm)
Exhaust
valve
0.030-0.045
0.15
Conical
angle
of
valve
45°-45.5°
—
Intake valve 89.61 89.51
Total length of valve (mm)
Exhaust
valve
90.91
90.41
Free
height
of
valve
spring
(mm)
43.1
—
152/33.4 —
Load / mounting height of valve
spring (N)/(mm)
310/25.2 —
Perpendicula
rity of
valve spring
＜
2° 4°
Contact
width
of
valve
seat
(mm)
0.9-1.3
—
Inner
diameter
of
valve
guide
(mm)
φ5.5
—
Protrusion of
valve
guide
(mm)
23.0
—
Extended by
0.05mm
φ10.605-10.615 —
Extended by
0.25mm
φ10.805-10.815 —
Diameter of size-extended valve guide on
cylinder head (mm)
Extended by
0.50mm
φ11.055-11.065 —
Extended by
0.3mm
φ28.425-28.445
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Intake
Extended by
0.6mm
φ28.725-28.745
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Extended by
0.3mm
φ26.725-26.745
—
Diameter of size-extended valve seat
ring hole (mm)
Exhaust
Extended by
0.6mm
φ26.725-26.745
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JAC J2 Specifications

General

Brand	JAC
Model	J2
Category	Automobile
Language	English