Honda CRF450X 2008 Service Manual

TECHNICAL FEATURE
HPSD (Honda Progressive Steering Damper): After '07
The steering damper is installed on the steering head pipe and the top bridge.
HPSD utilizes
the angle change of the top bridge relative to the steering head pipe to compress or extend the damper rod.
The steering
damper can be serviced, however the damper rod / piston is not serviceable.
Each
component of HPSD functions as follows:
- Da mp er rod / pi ston
The
damping force is generated by the extension or the compression of the damper rod.
- Ad juster pie ce / Plug bo tt
The damping force can be adjusted with the adjuster piece by turning the plug bott. The adjuster piece adjusts the
damp ing force of both compression and extension. Turning the plug bolt clockwise will increase damping force and
t
urning it counterclockwise will decrease damping force.
- Fr
ee pis ton / Res erv o ir / Spr i ng
When compressing the damper rod, damper oil moves temporari ly into the reservoir . The damper oil stored in the
reservoir is pushed back by the free piston. The free piston is moved by the spring tension and damper oil pressure.
- Da
mper case
There is a
groove inside t he damper case. Progressive damping force is cont r olled by the configuration of the groove
within the dampe r case.
DAMPER ROD/PIST ON
PLUG BOLT
SPRING
GROOVE
F REE PISTON
ADJUSTER PIECE
RESERVOIR
2-3

Honda CRF450X 2008 Specifications

General

Brand	Honda
Model	CRF450X 2008
Category	Motorcycle
Language	English