Yangdong Co. Y90 Series Manual de Serviço descarregar pdf (Página 31)

OPERATION&MAINTENANCE MANUAL

the cylinder sleeve carefully, and tighten the bolts in turn with required force moment.

4、crankshaft and flywheel

Timing gear for the crankshaft and belt pulley are installed at the front of the

crankshaft, The flying wheel is installed at the back flange and positioned by the

positioning pin. Six bolts are used for tightening the flying wheel as specified force

moment, one6203-z bearing is installed at the center of flange of the back of the

crankshaft to support the transmission shaft of the transmission case, scale mark of

provided at belt pulley of the crankshaft for observing the angle of the advance for

blowout.

The flying wheel is made of high temperature. Ring gear of the flying wheel is

located at the external circle of the flying wheel. Scale mark is provide at flying wheel for

observing the angle of advance of oil blowout

5、camshaft

In the front of the last cam of the cam shaft (from the frond side), there is gear which

support the driving oil pump. When the cam shaft is rotating, the cam pushed the

standing pillar to control air inlet and air outlet of each cylinders.

Thrust flange is provided for the second shift can bearing casing, it can control axial

direction drunkenness of the can shaft. Bearings for each shift of the can shaft receive

lubricant from the main oil channel. When installing lining for the front end, please check

the oil holes of the lining and body are connected or not. As the camshaft gear is

engaged with the driven gear on the oil pump, therefore, before dismantling the camshaft,

it is necessary to disassemble the lube oil pump, and then draw the camshaft out from

the front end.

The axis of the tappet deviates from the center line of of cam width. During operating,

the tappet rotates so as to provide an even wearing on the bottom surface and the

cylindrical surface of tappet.

6、gear transmission system

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Yangdong Co. Y90 Series Manual de Serviço Página 31