Honda CRF450R 2009 Service Manual page 462

REAR WHEEUSUSPENSION
Two small screwdrivers are required to remove the
stopper ring.
The stopper ring groove in the damper case is ramped
toward the inside to give the stopper ring a square
shoulder on which to seat securely.
To remove the stopper ring, first push one end of the
stopper ring oul of its groove, then slip the second
screwdriver between the stopper ring and damper case
to act as a ramp.
Now, use the other screwdriver to pull the stopper ring
completely oui.
Check the stopper ring groove for burrs.
Bum; will damage Remove any burrs with a fine emery cloth before pulling
tile
damper
rod
the damper rod out of the damper case.
piston
ring.
15-22
Carefully pull the damper rod assembly out of the
damper case.
PISTON RING REPLACEMENT
Inspect the piston ring.
If the piston ring is damaged, cut the piston ring and
replace it along with a new O-rings.
DAMPER CASE
ROD ASSEMBLY
O-RINGS
PISTON RING
Apply recommended shock oil (page 15-31) to new 0-
~===::::========::::======::::~
rings and piston ring.
6
rId!
O-RINGS PISTON RING
d
6
II....
~-7'--~ ....
II
Place the piston ring guide attachment over the piston, ./
and install the O·rings and piston ring into place by
hand.
TOOL:
Piston ring guide aHachment
070MG·KZ30100
not available In
U.S.A .
Compress the piston ring against the ring groove and
seat the piston ring into the ring groove.
PISTON RING GUIDE