94
11. Cylinder Head/Valve
Preparation documents -------------- 11.1
Failure diagnosis-----------------------11.2
Cylinder head---------------------------11.3
11.1
Preparation documents
Function of the cylinder head
:
The cylinder head is used to seal the cylinder and forms a
combustion chamber with piston to bear the high temperature and high pressure combustible gas,
and to intake and exhaust gas through the valve actuating mechanism.
Notes:
In order to assure a seal between the cylinder head and cylinder body, the cylinder head bears a
strong bolt pretightening force. Pretightening force: 28 Nm.
All parts shall be cleaned and blown by high pressure air before inspection.
Preparation standard
Unit: mm
Item
Standard value
Usage limit
Cylinder pressure
1.2Mpa
-
Flatness of cylinder cover
0.03
0.05
Valve
guide
Valve clearance
Inlet
0.08-0.1
0.09
Exhaust
0.1-0.15
0.10
ID of valve guide pipe
Inlet/Exhaust
4.5-4.512
4.532
Clearance between
valve lever and valve
guide pipe
Inlet
0.015-0.037
0.07
Exhaust
0.03-0.052
0.08
Width of valve seat
Inlet/Exhaust
0.8
1.4
Valve
spring
Free length
Inner
31.92
29.92
Outer
36.6
34.4
Rocker
Diameter of rocker hole Inlet/Exhaust
12.01-12.028
12.07
Diameter of rocker shaft Inlet/Exhaust
11.983-11.994
11.94
Clearance between
rocker hole and
rocker shaft
Inlet/Exhaust
0.016-0.045
0.10
Camshaft
Cam height
Inlet
33.27
33.14
Exhaust
33.1
33
Содержание ZAFFERAN 250
Страница 1: ...1 ZAFFERANO 250 Service Manual ...
Страница 14: ...14 Ignition spark ignition DC capacitance system Diameter of rear brake disc mm φ250mm ...
Страница 46: ...46 Ignition system 1 Battery 2 Starter Relay 3 Power lock assembly 4 Flash apparatus 5 Rectifier 6 Horn 7 ECU ...
Страница 50: ...50 B L B R BL W W G B BL W W G B ...
Страница 80: ...80 Rear Wheel Rear Suspension ...
Страница 85: ...85 Lubricating system diagram 1 camshaft 2 oil pump 3 crank 4 fuel filter ...
Страница 90: ...90 Cooling System Connects to radiator Flows back to radiator Water pump ...
Страница 93: ...93 Cylinder Head Valves ...
Страница 104: ...104 Cylinder Body and Piston cam chain sliders piston cylinder body piston pin piston ring assembly base gasket ...
Страница 112: ...112 Driving Disc Clutch Driven Wheel ...
Страница 113: ...113 V BELT CLUTCH AND SECONDARY PRIMARY SHEAVE CRANKCASE FILTER COVER AND CRANKCASE COVER LEFT ...
Страница 114: ...114 V BELT CLUTCH AND SECONDARY PRIMARY SHEAVE ...
Страница 115: ...115 SECONDARY SHEAVE ...
Страница 126: ...126 input shaft middle shaft output shaft ...
Страница 130: ...130 left crankcase crankshaft right crankcase ...
Страница 131: ...131 magneto start the main gear gasket ...
Страница 143: ...143 Inspection and Maintenance of Electronic Fuel Injection EFI System ...
Страница 165: ...165 17 2 7 2 Appearance of the oxygen sensor ...
Страница 179: ...179 Then check the corresponding fault according to the fault code list ...