Download  Print this page

Kawasaki KZ1300-A1 Quick Reference Manual Page 177

Hide thumbs

Advertisement

MAINTENANCE--ENGINE
is reduced and the valve will overheat and warp. Uneven
seating or seat damage will cause compression leakage.
Valve Seating Width
Table H23
Valve Seating Width
Standard
I
0.5 -1.0 mm
Seating
Width
To determine whether or not the valve seat requires
repair, first remove the valve, apply machinist's dye to
the valve seat, and then use a lapper to
tap
the valve
lightly into place. Remove the valve, and note where the
dye adheres to the valve seating
surface.
The valve
seating surface should be in the middle of the valve face
(Fig.
H40).
The distribution of the dye on the seating
surface gives an indication of seat condition (Fig.
H42).
NOTE:
The valve and valve guide must be in good con-
dition before this check will give an accurate indication
of valve seat condition.
ValveNalve Seat Contact Area
GOOD
TOO WIDE
Cutting Angle of Valve Seat
CD
A valve seat which requires repair is cut with a set of
valve seat cutters. Four cutters are required for com-
plete repair; one 30
0
(inlet valve seat only); one 45
0
;
and
two
75
cutters, one for the inlet and the other for the
exhaust.
First, cut the seating surface of the valve seat with
the 45
0
cutter. Cut only the amount necessary to make
a good surface; overcutting will reduce the valve clear-
ance, possibly making it no longer adjustable.
Next, use the 30
0
cutter (inlet valve seat only) to
cut the surface inside the seating surface, and then use
the
75
0
cutter
to
cut the outermost surface. Cut these
two surfaces so that the seating surface will have a
specified width.
After cutting, lap the valve to properly match the
valve and
v"
alve seat surfaces.
Start off with coarse
lapping compound, and finish with fine compound.
Apply compound to the valve seat, and
tap
the valve
lightly into place while rotating it with a lapper, re-
peating this until a smooth, matched surface is obtained.
A. Lapper
TOO NARROW
UNEVEN
177

Advertisement

Table of Contents

This manual is also suitable for:

Kz1300-a2

Comments to this Manuals

Symbols: 0
Latest comments: