DAELIM ROADWIN VJ125 - SERVICE, Руководство по обслуживанию

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9-9
CYLINDER HEAD / VALVES
●
Remove the valve and inspect the valve seat face.
●
The valve seat contact should be within the specified
width and evenly all around the circumference.
If the valve seat width is not within specification,
reface the valve seat.
●
Measure the valve seat width.
STANDARD VALUE : 0.7~0.9 mm
SERVICE LIMIT : 1.3 mm
VALVE SEAT REFACING
●
Reface the worn valve seat by using valve seat cutters
and grinders.
60 。 。
35
。 。
4455。 。
IN : 22mm
Ex : 22mm IN : 23mm
EX : 20mm
IN : 24.5mm
Ex : 24.5mm
37°
VALVE SEAT
·
Valve faces and stem tips cannot be ground. If a valve
face or stem tip is rough, worn unevenly, or contacts
the seat improperly, the valve must be replaced.
·
Follow the refacer manufactuer’s operating
instructions.
·
Reface the valve seat whenever the valve guide has
been replaced.
·
Be careful not to grind the seat more than necessary.
VALVE SEAT
ROUGHNESS
VALVE
SEAT
45
。 。
●
Using a 45 degree cutter, remove any roughness or
irregularities from the seat.
35 。 。
CUT THE SEAT PART
●
Using a 35 degree cutter, remove
¼
of the existing
valve seat material.