JLG 450A Telescoping boom hose replacement

Gents,

Long story short: My tenant was in the process of replacing the hoses on the telescoping boom of his 450A when he suddenly passed away last November. I finally had the chance to try and finish the job so I can use the lift and ready it so his wife can sell it, and I'm having a heck of a time snaking the hoses through the boom. Is there any "easy" way or recommended procedure on doing this. I've been trying all day, even trying to pull the old ones through with the backhoe...

Thanks,...

JLG 450A Telescoping boom hose replacement

JLG 450A Telescoping boom hose replacement