should I replace these hoses?

[DJNebraska]

Look through the Internet about how to install and route hyd lines and hoses. Even straight runs should have a small bend in the line. Watch out for the flexibility of hyd hose.

Secure the hoses/lines so they don't flop around.

At high wear points, use a sleeve of some kind for hose protection.

We use Flexdraulic and their catalog has routing info in it. It's on page 6 of their catalog.
It is important not to exceed the hoses' bend radius, as stated by JJ.