Daihatsu F300 Service Manual page 1213

ENGINE MECHANICALS
(2) Using a micrometer, measure the diameter of the valve
stem at six points.
Record the measured values.
Specified Value
IN: 6,560 - 6,580 mm
EX: 6,555 - 6,575 mm
16. Repairs of valve stem-to-guide bushing oil clearance
(1) Intake valve guide bush
<D
Drive out the valve guide bush from the combustion
chamber side, using the following SST.
SST: 09201-87705-000
®
Drive a new valve guide bush into position, until the
snap ring contacts the cylinder head, using the fol-
lowing SST.
SST: 09201-87705-000
CAUTION:
• Be
very
careful not
to
give an excessive impact during
the installation. Failure to observe this caution will result
in
vatve
guide bush cracks.
• Care should be exercised not to detach the snap ring
due
to
driving the valve guide bush excessively.
®
Using an adjustable reamer, ream the valve guide
bush
to
remove any burr or the like.
NOTE:
• This reaming should be made only enough
to
remove
the burr or the
like.
@ Inspection of oil clearance
Ensure that the oil clearance meets the specifica-
tions.
Oil
Clearance;
Specified Value:
Intake 0.020 - 0.080 mm
Allowable Limit
Intake 0.08 mm
EM-72
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