132
15.
Crankcase
Preparation documents-------------------15.1
Failure diagnosis---------------------------15.2
Crankcase-----------------------------------15.3
15.1
Preparation Documents
Function of the crankcase:
The crankcase is the force-bearing part of the engine. Its main
function is bearing crankshaft, clutch, transmission case, cylinder body and cylinder head, bearing
the inertia force from combustion shock and the movement of crankshaft connecting rod system,
and forming a closed space (oil sealing, gas sealing).
There are suspension holes in the crankcase, connecting the engine to other parts of the body
through the connection with suspension holes in the car circuit
Notes
The crankcase is thin-section casting thus has to avoid shock on operation in case of deformation
and fracture. All components must be cleaned and dried with high-pressure air before testing.
The lubricant in the crankcase should be drained before operation.
Preparation standard
unit
:
mm
Item
Standard value
Usage limit
Crankshaft
Left-right clearance of rod big end
0.5-0.75
0.9
Radial clearance of rod big end
0.008-0.018
0.05
Shimmy
0.03
0.09
15.2
Failure diagnosis
Noise in crankcase
Loose or broken parts inside crankcase
Loose crankshaft pin bearing
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 ...