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Measure valve guide ID.
Allowable limit: Intake/Exhaust: Ф4.53mm.
Clearance between valve and valve guide
Allowable limit: Intake Valve: 0.08m.
Exhaust valve: 0.1mm.
Valve Guide Replacement
Attention: When the clearance between valve and
valve guide exceeds service limit value, please
replace the valve guide. When a valve guide is
replaced, surface of valve seat retainer shall be fixed
and adjusted.
Put the valve guide into the freezing chamber of
refrigerator for one hour to freeze it.
Heat with electric furnace or oven the cylinder head
to 100-150℃.
Fix the cylinder head and remove the valve guide
from upper side of cylinder head with a special valve
guide remover.
Install a new O ring onto the new valve guide.
Install the valve guide from the top of cylinder head.
Attention: Please do not hurt cylinder head while
installing valve guide.
Opener
Testing
gauge
Opener
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