Front Fork (KX450D8F)
Cylinder Unit Inspection
Inspect the piston rod [B] of cylinder unit [A] for scratches
If it has scratches or is bent, replace cylinder unit with a
Inner Tube Inspection
Visually inspect the inner tube [A], repair any damage.
Nick or rust damage can sometimes be repaired by using
a wet-stone to remove sharp edges or raised areas which
cause seal damage.
If the damage is not repairable, replace the inner tube.
Since damage to the inner tube damages the oil seal,
replace the oil seal whenever the inner tube is repaired
Temporarily assemble the inner [A] and outer tubes [B],
and pump them back and forth manually to check for
If the inner tube is badly bent or creased, replace
Excessive bending, followed by subsequent
straightening, can weaken the inner tube.
Guide Bush Inspection
Visually inspect the guide bushes [A], and replace them if
Dust Seal/Oil Seal Inspection
Inspect the dust seal [A] for any signs of deterioration or
Replace it if necessary.
Replace the oil seal [B] with a new one whenever it has