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CYLINDER HEAD
EM-105
[VQ35DE]
C
D
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EM
Revision: 2004 November 2004 FX35/FX45
VALVE GUIDE CLEARANCE
Valve Stem Diameter
Measure inner diameter of valve guide with inside micrometer.
Valve Guide Inner Diameter
Measure inner diameter of valve guide with inside micrometer.
Valve Guide Clearance
● (Valve guide clearance) = (Valve guide inner diameter) – (Valve stem diameter).
● If it exceeds the limit, replace valve guide and / or valve.
VALVE GUIDE REPLACEMENT
When valve guide is removed, replace with oversized (0.2 mm, 0.008 in) valve guide.
1. To remove valve guide, heat cylinder head to 110 to 130°C (230
to 266°F) by soaking in heated oil.
Standard
Intake : 5.965 - 5.980 mm (0.2348 - 0.2354 in)
Exhaust : 5.955 - 5.970 mm (0.2344 - 0.2350 in)
SEM938C
Standard
Intake and
Exhaust
: 6.000 - 6.018 mm (0.2362 - 0.2369 in)
Valve guide clearance:
Standard
Intake : 0.020 - 0.053 mm (0.0008 - 0.0021 in)
Exhaust : 0.030 - 0.063 mm (0.0012 - 0.0025 in)
Limit
Intake : 0.08 mm (0.003 in)
Exhaust : 0.09 mm (0.004 in)
SEM008A
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