The bottle also needs to be changed in some instances if the internal screen filter is clogged badly.
In mild cases the bottle can be cleaned gently so you dont puncture the filter screen. If the bottle has baked on sludge inside then its usually a gone case.
New bottle is cheap though,
The suction hose also leaks (cheap too) and always replace the pump suction port Oring with a viton part so prevent air leak into suction which can cause noise.
Note: do not use a cheap rubber pipe to replace the power steering suction hose, the hose should be rated to handle hydraulic oils or automatic transmission oils.
If you use a regular rubber pipe, it will swell and collapse or leak. So best buy new genuine Honda part or at least nichirin branded hose (it will be moulded like original too)