l
After fitting all valve guides, re-finish their guiding bores
with a 5.5 mm reamer. Be sure to clean and oil the guide
after reaming.
09916-34550
:
Valve guide reamer
09916-34541
:
Reamer handle
l
Fit the valve spring lower seats.
l
Lubricate each oil seal with engine oil, and press-fit the
oil seal into position with the finger tip.
CAUTION:
Do not reuse the oil seal.
VALVE SEAT WIDTH
Coat the valve seat with prussian blue uniformly. Fit the valve
and tap the coated seat with the valve face in a rotating
manner, in order to obtain a clear impression of the seating
contact. In this operation, use the valve lapper to hold the
valve head.
The ring-like dye impression left on the valve face must be
continuous - without any break. In addition, the width of the
dye ring, which is the visualized seat “width”, must be within
the following specification:
Valve seat width
STD. @ : 0.9 - 1.1 mm (0.035 - 0.043 in)
If either requirement is not met, correct the seat by servicing
as follows:
it
I
To Next Page
