6-4
Chapter 6 INSPECTION AND REPAIR OF BASIC ENGINE
1.3 Valve Stem Outside Diameter and Valve Guide Inside Diameter - Measure
Measure the outside diameter of valve stem and the inside
diameter of valve guide at the top and bottom sliding ends in
right-angle directions as shown, as the sliding surface tends
to wear at the top and bottom ends. If the measurement
exceeds the limit, replace the valve guide or valve with a
new one.
Note: Lap the valve and valve seat whenever new valve is in-
stalled.
Valve Stem Outside Diameter - Measure
Valve Guide Inside Diameter - Measure
1.4 Valve Guide - Replace
(1) Remove the valve guide with valve guide remover.
Valve Guide - Remove
(2) With guide and seal installer, press-in the new valve
guide slowly.
Valve Guide - Press-in
Item
Nominal
value
Standard value Limit value
Val v e st e m
outside diameter
ø10 mm
[0.39 in.]
9.940 to 9.960 mm
[0.0010 to 0.0044 in.]
9.910 mm
[0.3902 in.]
Valve guide
inside diameter
ø10 mm
[0.39 in.]
10.000 to 10.015 mm
[0.3937 to 0.3943 in.]
10.060 mm
[0.3961 in.]
Measurement
direction
Measurement
point
Measurement
direction
Measurement
point
Be sure to use the guide and seal installer, and press-
in the valve guide to the specified height.
Valve guide remover
P/N:33591-04300
31.5 ± 0.3 mm
[0.081 ± 0.012 in.]
Valve guide
Cylinder head
Guide and seal installer
P/N:37191-11500
To Next Page
Loading...
Need help?
General
