Mazda 2006-2008 RX7 Engine, Руководство по ремонту

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MECHANICAL
01–10–13
01–10
5. Calculate the valve stem to guide clearance by
subtracting the outer diameter of the valve stem
from the inner diameter of the corresponding
valve guide.
•
If it exceeds the specification, replace the
valve and/or the valve guide.
Valve stem to guide clearance (Standard)
IN: 0.024—0.069 mm {0.0009—0.0027 in}
EX: 0.029—0.074 mm {0.0012—0.0029 in}
Valve stem to guide clearance (Maximum)
0.10 mm {0.004 in}
6. Measure the protrusion height (dimension A) of
each valve guide without lower valve spring seat.
•
If not within the specified, replace the valve
guide.
Valve guide protrusion height (standard)
12.2—12.8 mm {0.481—0.503 in}
End Of Sie
VALVE GUIDE REPLACEMENT
E5U011012111E02
Valve Guide Removal
1. Remove the valve guide from the combustion
chamber side using the SST .
Valve Guide Installation
1. Assemble the SSTs so that depth L is as
specified.
Valve guide protrusion height (standard)
12.2—12.8 mm {0.481—0.503 in}
VALVE STEM
VALVE GUIDE
CLEARANCE
ADA2224E027
A
VALVE GUIDE
CYLINDER HEAD
C3U0110E004
VALVE GUIDE
49 B012 015
C3U0110E005
L
49 L012 004A
49 L012 003A
49 L012 002A
B3E0110E071