Changzhou ITC Power Equipment Manufacturing Co.,Ltd.
Changzhou ITC Power Equipment Manufacturing Co.,Ltd.
Changzhou ITC Power Equipment Manufacturing Co.,Ltd.
Changzhou ITC Power Equipment Manufacturing Co.,Ltd.
Changzhou ITC Power Equipment Manufacturing Co.,Ltd.
POWER PRODUCTS
30
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Outer diameter of the
inlet/exhaust valve rocker arm
pivot
14.989-15.000 mm
14.94 mm
Inner diameter of the
inlet/exhaust valve rocker arm
hole
. 15.016-15.034 mm
15.10 mm
4.1.7 Adjust the valve clearance
(1) The clearance must be adjusted when the engine is cold.
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(2) Valve timing
C
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Intake
Close
50
°
after BDC
C
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Exhaust
Close
10
°
after TDC
4.2 Piston and piston pin
4.2.1 Piston
(1). Check the top of piston and the surface of combustion chamber. To wipe off the carbon
from the top of piston and the surface of combustion chamber with care not to scratch
the surface, therefore to check whether there’s any damage on the surface of combustion
chamber.
(2). Check the outer diameter of the piston
If the outer surface of piston and ring groove wear out beyond the limit, replace the
piston.
(3). Piston and piston pin
To disassemble the piston pin, heat the piston to 70
℃
-80
℃
, repeat this heating
procedure while re-assembling the piston pin.
