Rato R160, Service Manual

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Camshaft wearing cause and its influence on engine performance:
Poor lubrication, caused by factors such as low oil viscosity, too many impurities, and
little recycling oil, will result in camshaft abnormal wearing, making it hard for the camshaft
surface to have a complete oil film, causing the camshaft surface seriously worn in the state
of high-speed rubbing; installing precision problem is also a factor that can cause lubrication
problem, when the matching clearance of the camshaft journal and camshaft seat or bearing
is out of the service limit, camshaft rotation precision will lower and contacting with the
relative part will produce deviation to make abnormal wearing.
Timing gear
a
）
Check timing gear for engagement clearance and align marks of the gears on two sides.
Timing gear will be damaged if gear is worn, gear face peels off, and gear teeth are broken.
The engagement clearance is bigger due to gear wearing, the noise is bigger.
If the timing gear is damaged, please replace it with new one.
NOTICE: Please replace the gear with a new set to ensure the engaging face completely
engages in.
Crankshaft and Camshaft
Alignment
Crankshaft and
Crankshaft gear Alignment
Alignment marks
Crankshaf
t gear
Alignment marks
Camshaft gear
Crankshaft gear
Alignment marks
Camshaft gear
Crankshaft gear