ENGINE 3-33
VALVE STEM RUNOUT
• Support the valve using V-blocks and check its runout using
the dial gauge as shown.
• If the runout exceeds the service limit, replace the valve.
Valve stem runout:
Service Limit: 0.05 mm
09900-20607: Dial gauge (1/100 mm)
09900-20701: Magnetic stand
09900-21304: V-block set (100 mm)
VALVE HEAD RADIAL RUNOUT
• Place the dial gauge at a right angle to the valve head face
and measure the valve head radial runout.
• If it measures more than the service limit, replace the valve.
Valve head radial runout:
Service Limit: 0.03 mm
09900-20607: Dial gauge (1/100 mm)
09900-20701: Magnetic stand
09900-21304: V-block set (100 mm)
VALVE FACE WEAR
• Visually inspect each valve face for wear. Replace any valve
with an abnormally worn face. The thickness of the valve face
decreases as the face wears. Measure the valve face T. If it
is out of specification, replace the valve with a new one.
Valve head thickness T:
Service Limit: 0.5 mm
09900-20102: Vernier calipers
Be careful not to damage the valve and valve stem
when handling it.
Be careful not to damage the valve and valve stem
when handling it.
To Next Page
Loading...
