Flangeless Type Guides - Honda Motorcycle Service Manual

CYLINDER HEAD
CAUTION
.
Avoid damaging the head when driving the valve guide
out.
Apply oil to a new O-ring and install it onto
a
new valve guide.
Drive the new guide in from the camshaft side of the cylinder
head while the cylinder head is still heated.
Let the cylinder head cool to room temperature, then ream the
new valve guides.
Flangeless Type Guides:
Measure and record the exposed height of the valve guide us-
ing a pair of vernier calipers.
VALYE GUIDE
Chill the valve guides in the freezer section of a refrigerator for-
1
about an hour.
Heat the cylinder head to 130°C-140°C (275°F-2900F1.
Do not heat the cylinder head beyond 1 50°C (300°F1. Use
temperature indicator sticks, available from welding supply
stores, to be sure the cylinder head is heated to the proper
temperature.
CAUTION
.
Using a torch to heat the cylinder head may cause
warping.
.
To avoid burns, wear insulated gloves when handling the
heated cvlinder head.
Support the cylinder head and drive the old guides out of the
combustion chamber side of the cylinder.
CAUTION
I
Avoid damaging the head when driving the valve guide
VALVE GUIDE
VALVE
GUIDE
REMOVER
3r DRIVER
Date of Issue: March,
1995
9-14
o
HONDA MOTOR CO.,LTD.