V.Maintenance specification of engine
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Item
Standard
Limit
Axle drive
Meshing clearance of last end gear
Meshing clearance of middle gear(forward)
Meshing clearance of middle gear(backword)
Lubrication system:
Type of filtering oil
Type of oil pump
Clearance of side
Endface clearance”A”or “B”
Releasing pressure of safety valve
Cylinder
Bore size
Cylinder head
Flatenss of lower endface
Timing chain
Type of timing chain
Tension type of timing chain
Camshaft:
Driving method
Roundness tolerance of camshaft
Outside diameter of camshaft
Cam size
Exhaust:¡°A”
¡°B”
“C”
Intake:“A”
“B”
“C”
Rocker arm/Rocker arm shaft
Outside diameter of shaft
Inside diameter of rocker arm
Clearance between arm and shaft
Valve spring
Inside spring
Free length:intake/exhaust
Setting length when valve is closed:intake/exhaust
Compressing pressure when assembling:intake/exhaust
Limit value of squareness:intake/exhaust
Twisting direction of spring(top view):intake/exhaust
0.1-0.2mm
0.1-0.2mm
0.10-0.25mm
Wire filtering net
Rotor type,pressure splash type lubrication
0.05mm
0.20mm
80-120Kpa
§¶63.025mm
(Distance between measuring point and upper endface
of cylinder is 40mm)
Measure the surface warp of every portion on the
lower endface of cylinder head with rule.
Roller chain
Free adjustment
Shaft driving(left)
§¶25mm
31.365mm
25mm
6.365mm
31.532mm
25mm
6.532mm
35.5mm
30.5mm
82.4-100.0N
Counterclockwise
0.10mm
0.50mm
§¶63.03
§¶63.02mm
0.10mm
0.02mm
¡À0.04
¡À0.01
¡À0.06
¡À0.04mm
¡À0.01mm
¡À0.06mm
2.5¡ã/1.6mm
§¶12
-0.006
-0.024
§¶12
+0.018
-0
0.006~0.042
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