Honda CRF450R 2009 Service Manual page 459

If the bladder becomes distorted during installation ,
depress the valve core to reform it.
Clean the inside of the reservoir.
Apply a light coat of recommended shock oil
(page 15-31) to the lips of the bladder, and press the
chamber cap into the reservoir to about 1.0 - 2.0 mm
(0.04 - 0.08 in) below the stopper ring groove.
Install the stopper ring in the groove of the reservoir.
NOTE:
When installing the stopper ring with its end gap
facing toward the damper case.
Be sure the stopper ring is sealed in the groove all
the way around or the chamber cap can come apart
when riding the motorcycle.
Temporarily fill the reservoir with air slowly until the
chamber cap seats against the stopper ring.
Make sure the chamber cap face is level with the
reservoir face.
If the chamber cap does not seat fully, the chamber cap
may fly out when filling the reservoir with nitrogen.
Release the air from the bladder by depreSSing the
valve core.
Fill and bleed the shock absorber (page 15-31).
Fill the reservoir with nitrogen to the specified pressure
(page 15-34).
REAR WHEEUSUSPENSION
x
NO GOOD
END
EQUAL HEIGHT
GOOD
o
1.0-2.0mm
(0.04 - 0.08 in)
I
CHAMBER CAP
RESERVOIR
15-19