Camshaft Removal - Honda 2005-2008 RX500 FA Service Manual

'61HN252' by American Honda Motor Co. - Page 177 of 540
[2005-2008] [TRX500 FA/FGA]
Excessive lapping
pressure may
deform or damage
lapping compound
to enter the guides.

CAMSHAFT REMOVAL

1 of 1
Using a 60° interior cutter, remove 1/4 of the exist-
ing valve seat material.
TOOLS:
Interior cutter, 34 mm (IN)
Interior cutter, 30 mm (EX)
Cutter holder, 5.5 mm
or equivalent commercially available in U.S.A.
Using a 45° seat cutter, cut the seat to the proper
width.
VALVE SEAT WIDTH:1.0-1.1 mm (0.039-0.043 in)
Make sure that all pitting and irregularities are
removed.
After cutting the seat, apply lapping compound to
the valve face, and lap the valve using light pres-
sure.
Change the angle of lapping tool frequently to pre-
the seat.
vent uneven seat wear.
After lapping, wash any residual compound off the
Do not allow
cylinder head and valve and recheck the seat con-
tact.
Remove the cylinder head (page 8-8).
Remove the cam chain tensioner lifter sealing bolt
and sealing washer.
http://services.honda.com/ServiceManual/SVC_MNL/61HN253/61HN2...
CYLINDER HEAD/VALVE/CAMSHAFT
07780-0014700
07780-0014000
07781-0010101
OLD SEAT WIDTH
60°
SEAT WIDTH
45°
HAND-LAPPING TOOL
SEALING WASHER
SEALING BOLT
8-15
3/9/2008 10:51 PM