Honda WDP30X, Инструкция по эксплуатации

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8-4
Date of Issue: April 2008
WDP30X
• VALVE STEM O.D.
Inspect each valve for face irregularities, bending, or
abnormal stem wear. Replace the valve if necessary.
Measure and record each valve stem O.D.
Replace the valves if their O.D. is smaller than the service
limit.
• VALVE GUIDE I.D.
Ream the valve guides to remove any carbon deposits
before measuring.
Measure and record each valve guide I.D.
Replace the guides if they are over the service limit ( P. 8-5 ).
• GUIDE-TO-STEM CLEARANCE
Subtract each valve stem O.D. from the corresponding guide
I.D. to obtain the guide-to-stem clearance.
If the guide-to-stem clearance exceeds the service limit,
determine if the new guide with standard dimensions would
bring the clearance within tolerance. If so, replace any guide
as necessary and ream to fit. If the guide-to-stem clearance
exceeds the service limit with new guides, replace the valves
as well.
Recondition the valve seats whenever the valve guides are
replaced (
P. 8-6 ).
Standard Service limit
IN 5.48 mm (0.216 in) 5.318 mm (0.2094 in)
EX 5.45 mm (0.215 in) 5.275 mm (0.2077 in)
Standard Service limit
5.50 mm (0.217 in) 5.572 mm (0.2194 in)
Standard Service limit
IN
0.020 ~ 0.044 mm
(0.0008 ~ 0.0017 in)
0.10 mm (0.004 in)
EX
0.050 ~ 0.077 mm
(0.0019 ~ 0.0030 in)
0.12 mm (0.005 in)
VALVE GUIDE
REAMER, 5.5 mm
07984-200000D